CN101442852A - Method and apparatus for setting back-up circuit for series circuit open circuit, and device current-limiting circuit - Google Patents

Method and apparatus for setting back-up circuit for series circuit open circuit, and device current-limiting circuit Download PDF

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CN101442852A
CN101442852A CNA2007101880649A CN200710188064A CN101442852A CN 101442852 A CN101442852 A CN 101442852A CN A2007101880649 A CNA2007101880649 A CN A2007101880649A CN 200710188064 A CN200710188064 A CN 200710188064A CN 101442852 A CN101442852 A CN 101442852A
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circuit
resistance
current
stand
triode
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CN101442852B (en
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王宝库
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Abstract

Method for arranging backup circuit for the open of series circuit, apparatus and apparatus current-limited circuit can prevent the stop of all circuits while the series circuit is opened. By applying the invention, the work of the whole lamp made of series connection of a plurality of LEDs can not be effected if one LED opens, thereby current limiting resistance and current limiting resistance energy consumption are largely reduced. voltage regulating current limiting circuit can conquer the effect of big fluctuation of the power source voltage to the series circuit reliability. For example, by using the voltage regulating current limiting circuit, series connected LED lamp can be supplied directly by the rectified commercial power 220V without special power source. Consequently, the cost of apparatus is reduced, electricity energy consumption is reduced and the reliability of apparatus is improved.

Description

Method and device and device current-limiting circuit for setting back-up circuit for series circuit open circuit
Technical field
The present invention relates to be made up of circuit unit the method and the device of series circuit, the circuit unit open circuit that especially contains in the promising series circuit is established the method for stand-by circuit and the current-limiting circuit of device and this device.
Background technology
People know in series circuit, as long as open circuit, all circuit units all can't be worked because of can not get electric current in the series circuit, and series circuit reliability is affected.Therefore, the people are designed to parallel circuits as far as possible when reality is used circuit unit.In order to make a large amount of low-voltage circuits unit carry out parallel connection, must increase auxiliary device, High Voltage Power Supply is converted to low voltage power supply and export big electric current, like this, increased equipment investment, a large amount of electric energy losses is arranged in the electric energy transfer process.As:
1. use light-emitting diode to be called LED at present, the lamp of being made up of light-emitting diode is the LED lamp, general every the LED of its circuit resistance of need connecting, this resistance is called current-limiting resistance, in case being the voltage of circuit, its effect fluctuates, because the effect of current-limiting resistance, the electric current of restricted passage LED, avoid taking place than great fluctuation process by the electric current of LED, guarantee the LED reliably working, each subcircuits of LED that will contain series limiting resistor during use is together in parallel, and then by DC power supply, constitutes complete LED circuit for lamp.If the use LED that the LED lamp is a large amount of, current-limiting resistance is too many, and a large amount of electric energy losses is arranged on current-limiting resistance, has reduced the electric utilization ratio that is used for LED, needs DC power supply device that bigger supply current is provided simultaneously, increases the electric energy loss of DC power supply device.So people have expected going here and there after many LED series connection a current-limiting circuit again, reduced the quantity of current-limiting resistance like this, therefore reduced the loss of the electric energy of current-limiting resistance; Reduce the supply current of DC power supply device; Reduce the electric energy loss of DC power supply device, though having solved to cut down the consumption of energy, this technical scheme improves the utilization ratio problem that electric energy is directly used in LED, but, in case the LED open circuit is arranged, be connected on this branch road all LED all because of can not get the power supply, all LED do not work, and influence is used, and make to go here and there the technical scheme of a current-limiting circuit after many LED series connection again and be difficult to realize.
2. for the AC low-tension bulb, a plurality of low voltage bulbs are together in series, directly being powered by city's alternating current to make each bulb normally luminous, but in case a bulb open circuit is arranged, all series loop bulbs all do not work to influence and use, therefore, have only with transformer High Level AC Voltage is become low-voltage AC, then bulb is powered.Like this, increase equipment investment and increase electric energy loss.
3. for the AC low-tension electric bell, a plurality of low pressure electric bells are together in series, directly power and to make each electric bell operate as normal by city's alternating current, but in case an electric bell open circuit is arranged, all series loop electric bells do not ring influence to be used, therefore, High Level AC Voltage is become low-voltage AC, electric bell is powered with transformer.Like this, increase equipment investment and increase electric energy loss.
Above-mentioned 3 examples are can be own by the example of series circuit constituent apparatus, and not exclusive background technology, and this situation is innumerable in the reality.
Another background technology of the present invention is: the current-limiting circuit in the series circuit all is to use the current-limiting resistance current limliting at present.Because the present invention has established stand-by circuit for the open circuit of the circuit unit in the series circuit, a plurality of circuit unit series connection are used become possibility, the supply voltage of constituent apparatus can be higher like this, it is big that the excursion of device supply voltage also becomes relatively, therefore, need the device of power supply stable power-supplying for those, when mains fluctuations are big, with current-limiting resistance is the circuit current limliting, do not satisfy the current limliting requirement, ifs circuit is current limliting well, current fluctuation too big useful life that influences the circuit unit in the series circuit, influences the reliability of device.
Goal of the invention
The object of the invention provides method and the device of being made of series circuit circuit unit, and the circuit unit open circuit that contains in the promising series circuit is established stand-by circuit.Stand-by circuit place cut-off state does not have electric energy loss when the series circuit operate as normal.When open circuit appears in the circuit unit in the series circuit, the voltage of stand-by circuit when the two ends that the open circuit place occurs of the circuit unit in series circuit produce operate as normal at once, series circuit can be from this stand-by circuit by normal operating current.It so promptly is the circuit unit open circuit in the series circuit, because the effect of stand-by circuit, do not have the voltage at circuit unit two ends of open circuit big variation can not take place in the series circuit, and these circuit units can be from stand-by circuit by running current, can operate as normal.
Because stand-by circuit exists, a large amount of circuit unit series connection are used, circuit unit in the series circuit is many more, the required voltage that provides of power supply is high more, supply voltage is high more, the mains fluctuations scope is big more, the fluctuation range that supply voltage is big, for those require the circuit unit of stable power-supplying current-limiting resistance current limliting on the series circuit, do not satisfy requirement, therefore, another purpose of the object of the invention is: current-limiting circuit is provided, and the change in voltage that the current-limiting circuit of being connected is passed through in the fluctuation of supply voltage is offset the fluctuation of supply voltage, like this, though the fluctuation range of supply voltage is big, it is more stable that the change in voltage by current-limiting circuit is offset the voltage that is added in the circuit unit on the series circuit after the fluctuation of supply voltage.Also more stable by the electric current on the series circuit, play good metering function, making circuit unit open circuit in those series circuits that need stable power-supplying establish the device that stand-by circuit constitutes can realize.
Technical scheme
In order to prevent the circuit unit in series circuit in case open a way, all circuit units of other in the series circuit are not worked, the stand-by circuit all in parallel of each circuit unit in series circuit.Stand-by circuit has two terminals, and two terminals also are connected in the series circuit on each circuit unit.The present invention establishes one for stand-by circuit and starts operating voltage, start operating voltage greater than and near the maximum working voltage of institute parallel circuits unit, when the stand-by circuit when starting operating voltage of the voltage between the two ends of stand-by circuit is in cut-off state, there is not electric current to pass through.When the circuit unit in the series circuit is opened a way, produce one between the stand-by circuit two ends in parallel and keep voltage, this keeps the startup operating voltage that voltage is stand-by circuit, and can pass through certain electric current from this stand-by circuit, this electric current is equal to or greater than the maximum operating currenbt of series circuit.Like this, during the series circuit operate as normal, the voltage between the stand-by circuit two ends is less than the maximum voltage of the circuit unit in each series circuit, and the stand-by circuit both end voltage does not reach the startup operating voltage, is in cut-off state, does not have electric current to pass through.When only the circuit unit in series circuit is opened a way, be added to the voltage at stand-by circuit two ends in parallel reach the startup operating voltage immediately, stand-by circuit produces at the circuit unit two ends at circuit for series circuit open circuit place and keeps the startup operating voltage, make other circuit unit both end voltage value in the series circuit that big variation not take place, and other circuit unit in the series circuit can from stand-by circuit in parallel electric current by required work, guarantee other circuit unit operate as normal in the series circuit.Alleged circuit unit can be an element or equipment, also can be the series circuit that plural element or equipment are formed, and can also be the set that multiple element or equipment combined group become series circuit.Stand-by circuit in parallel according to the circuit unit power in the series circuit or different and different by electric current, can be an element, also can be the circuit that a plurality of elements are formed.
Character stand-by circuit according to power supply can be the direct current stand-by circuit, also can be to exchange stand-by circuit.The stand-by circuit that is used for AC series circuit is for exchanging stand-by circuit.The stand-by circuit that is used for the DC series circuit is the direct current stand-by circuit, exchanges stand-by circuit and realizes on direct current stand-by circuit basis, and promptly two direct current stand-by circuits connect respectively behind the diode again that reverse parallel connection just constitutes an interchange stand-by circuit.
Current-limiting circuit is achieved in that to be removed with also adopting the pressure regulation scheme to carry out current limliting in the current-limiting resistance current limliting external circuit, be called the pressure regulation current limliting, the pressure regulation current-limiting circuit is connected in the circuit, when supply voltage is low, it is little that pressure regulation current-limiting circuit two ends produce voltage drop, guarantee that power supply provides normal working voltage for the circuit unit in the series circuit, thereby can obtain normal operating current, so that circuit unit spare operate as normal in the series circuit.When supply voltage was high, the generation voltage drop of pressure regulation current-limiting circuit two ends was big, offsets the supply voltage raised portion, guaranteed that power supply provides normal working voltage for the circuit unit in the series circuit, thereby can obtain normal operating current.When guaranteeing that mains fluctuations are big, contain circuit unit open circuit in the promising series circuit and establish stand-by circuit constituent apparatus technical scheme and can implement.
Beneficial effect
The invention has the beneficial effects as follows: reduce the power supply voltage conversion apparatus, reduce the unnecessary electric energy loss of device, improve the reliability of the circuit unit constituent apparatus work in the series circuit:
1. for the LED lamp,, eliminated the LED in the series LED circuit because the phenomenon that open circuit does not all work all LED of this branch road can realize many LED series connection safely owing to be adopted as the direct current stand-by circuit that the LED open circuit in the series LED circuit is established.Like this, on the LED lamp, cancel a large amount of current-limiting resistances, therefore reduced the loss of the electric energy of current-limiting resistance, from technique scheme, supply voltage is high more, and it is many more that LED connects, the quantity of cancellation current-limiting resistance is many more, and energy-saving effect is good more, and the utilization ratio that electric energy is directly used in LED is high more.
2. owing to adopt and to contain the interchange stand-by circuit that promising AC series circuit open circuit is established, can make directly to connect on city's alternating current after a plurality of AC low-tension bulbs series connection and use.Reduce the equipment that transformer carries out step-down, reduce electric energy loss.
3. owing to adopt and to contain the interchange stand-by circuit that promising AC series circuit open circuit is established, can make directly to connect on city's alternating current after a plurality of AC low-tension electric bells series connection and use.Reduce the equipment that transformer carries out step-down, reduce electric energy loss.
Above-mentioned example all is can be by the beneficial effect example of series circuit constituent apparatus, but real series circuit situation is innumerable, employing contains the stand-by circuit that promising circuit for series circuit open circuit is established, beneficial effect is tangible, above-mentioned example and not exclusive generation beneficial effect example, but for the example of beneficial effect is described.
Owing to adopt pressure regulation current-limiting circuit technical scheme, guarantee that the series circuit constituent apparatus can reliably working when mains fluctuations are big.To improving the useful life of device, the reliability that improves device is highly profitable.And making those for the circuit unit in the series circuit that requires stable power-supplying, the technical scheme of using the circuit unit open circuit that contains in the promising series circuit to establish the stand-by circuit constituent apparatus can realize.
The invention will be further described below in conjunction with drawings and Examples:
Description of drawings
Fig. 1 establishes direct current stand-by circuit technical scheme block diagram for the open circuit of the circuit unit in the DC series circuit;
Fig. 2 establishes for the open circuit of the circuit unit in the AC series circuit to exchange stand-by circuit technical scheme block diagram;
Fig. 3 establishes direct current stand-by circuit embodiment 1 for the open circuit of the circuit unit in the DC series circuit;
Fig. 4 establishes direct current stand-by circuit embodiment 2 for the open circuit of the circuit unit in the DC series circuit;
Fig. 5 establishes direct current stand-by circuit embodiment 3 for the open circuit of the circuit unit in the DC series circuit;
Fig. 6 establishes direct current stand-by circuit embodiment 4 for the open circuit of the circuit unit in the DC series circuit;
Fig. 7 is the single-stage pressure regulation current-limiting circuit technical scheme block diagram of establishing for the series circuit constituent apparatus;
Fig. 8 is the twin-stage pressure regulation current-limiting circuit technical scheme block diagram of establishing for the series circuit constituent apparatus;
Fig. 9 is the multi-stage pressure regulating current-limiting circuit technical scheme block diagram of establishing for the series circuit constituent apparatus;
Figure 10 is the twin-stage pressure regulation current-limiting circuit embodiment 1 that establishes for the series circuit constituent apparatus;
Figure 11 is the twin-stage pressure regulation current-limiting circuit embodiment 2 that establishes for the series circuit constituent apparatus;
Figure 12 is three grades of pressure regulation current-limiting circuit embodiment that establish for the series circuit constituent apparatus;
Figure 13 contains the DC series circuit and establishes direct current stand-by circuit technical scheme block diagram for the open circuit of the circuit unit in the DC series circuit;
Figure 14 contains AC series circuit to exchange stand-by circuit technical scheme block diagram with establishing for the open circuit of the circuit unit in the AC series circuit;
Figure 15 contains the DC series led circuit and for being that the circuit unit open circuit is established direct current stand-by circuit embodiment with single LED among the DC series LED;
Figure 16 be contain the DC series led circuit and among the DC series LED being that the circuit unit open circuit is established direct current stand-by circuit embodiment after three LED series connection;
Figure 17 be contain the DC series led circuit and among the DC series LED being that the circuit unit open circuit is established direct current stand-by circuit embodiment after many LED series connection;
Figure 18 contains the DC series led circuit and for being that the circuit unit open circuit is established the direct current stand-by circuit with two LED series connection among the DC series LED, and the direct current stand-by circuit is that alter-parallel connects embodiment;
Figure 19 be contain DC series great power LED circuit and the direct current established for DC series great power LED open circuit after power backup embodiment 1;
Figure 20 is the direct current stand-by circuit embodiment 2 that contains DC series great power LED circuit and establish for DC series great power LED open circuit;
Figure 21 be contain the DC series led circuit, the direct current stand-by circuit of establishing for DC series LED open circuit and the single LED circuit for lamp embodiment that finishes with the current-limiting resistance current-limiting circuit;
Figure 22 be contain the DC series led circuit, the direct current stand-by circuit of establishing for DC series LED open circuit and the LED multi-path circuit for lamp embodiment that finishes with the current-limiting resistance current-limiting circuit;
Figure 23 is by city's AC-powered, through the full-wave rectifying circuit rectification, contain two-stage pressure-regulating current-limiting circuit current limliting, DC series led circuit and the embodiment of the direct current stand-by circuit formation single LED circuit for lamp established for DC series LED open circuit;
Figure 24 is by city's AC-powered, through the full-wave rectifying circuit rectification, contain two-stage pressure-regulating current-limiting circuit current limliting, DC series led circuit and the embodiment of the direct current stand-by circuit formation LED multi-path circuit for lamp established for DC series LED open circuit;
Figure 25 is by city's AC-powered, through halfwave rectifier, and single-stage pressure regulation current-limiting circuit current limliting, DC series led circuit and be the DC series LED single LED circuit for lamp embodiment that the direct current stand-by circuit established finishes that opens a way;
Figure 26 is by city's AC-powered, and a plurality of low-voltage alternating-current bulbs are connected in series on the power supply, and each bulb is established the interchange stand-by circuit, constitutes complete bulb powered circuit embodiments;
Figure 27 is by city's AC-powered, and a plurality of low-voltage alternating-current electric bells are connected in series on the power supply, and each electric bell is established the interchange stand-by circuit, constitutes complete electric bell power supply circuits embodiment;
Figure 28 is by city's AC-powered, and devices in series such as low-voltage alternating-current electric bell, motor, electric bell are connected on the power supply.Each equipment is established the interchange stand-by circuit, constitutes complete device power supply circuits embodiment.
Embodiment
Do an explanation below more in conjunction with the accompanying drawings:
As shown in Figure 1, be to establish direct current stand-by circuit technical scheme block diagram for the open circuit of the circuit unit in the DC series circuit.Among the figure 3 establishes the direct current stand-by circuit for the open circuit of the circuit unit in the DC series circuit, and direct current stand-by circuit 3 has two terminals, the 1st, the anode of direct current stand-by circuit 3, the 2nd, the negative terminal of direct current stand-by circuit 3.The course of work of direct current stand-by circuit 3 is:
In order to prevent that in a single day the circuit unit in the DC series circuit from having the open circuit phenomenon, all circuit units of in the series circuit other are not worked, each circuit unit direct current stand-by circuit 3 all in parallel in the DC series circuit, the anode of anode 1 circuit unit of direct current stand-by circuit 3, the negative terminal of the negative terminal 2 connection circuit unit of direct current stand-by circuit 3.The present invention establishes one for direct current stand-by circuit 3 and starts operating voltage, start operating voltage greater than and near the maximum working voltage of institute parallel circuits unit, when the anode 1 of direct current stand-by circuit 3 and the voltage between the negative terminal 2 direct current stand-by circuit 3 when starting operating voltage is in cut-off state, there is not electric current to pass through.When the circuit unit in the series circuit is opened a way, produce one between direct current stand-by circuit 3 two ends in parallel and keep voltage, this keeps the startup operating voltage that voltage is direct current stand-by circuit 3, and direct current stand-by circuit 3 can pass through certain electric current from anode 1 to negative terminal 2, and this electric current is equal to or greater than the maximum operating currenbt of series circuit.Like this, during the series circuit operate as normal, the voltage between direct current stand-by circuit 3 two ends is less than the maximum voltage of the circuit unit in each series circuit, and direct current stand-by circuit 3 both end voltage do not reach the startup operating voltage, are in cut-off state, do not have electric current to pass through.When only the circuit unit in series circuit is opened a way, be added to the voltage at direct current stand-by circuit 3 two ends in parallel reach the startup operating voltage immediately, two ends, open-circuit unit in series circuit, the two ends 1 and 2 of direct current stand-by circuit 3 produce keeps the startup operating voltage, make other circuit unit both end voltage value of series circuit that big variation not take place, and other circuit unit of series circuit can from direct current stand-by circuit 3 in parallel electric current by required work, guarantee other circuit unit operate as normal of series circuit.
As shown in Figure 2, be to establish for the open circuit of the circuit unit in the AC series circuit to exchange stand-by circuit technical scheme block diagram.Among the figure 6 is interchange stand-by circuits of establishing for the AC series circuit open circuit, and exchanging stand-by circuit 6 has two terminals 4 and 5.In Fig. 2, constitute the branch road of a series circuit by the negative pole of a diode D of direct current stand-by circuit 3 anodes, 1 connection, the two ends of this branch road are the positive poles of direct current stand-by circuit 3 negative terminals 2 and diode D, two such branch road two ends reverse parallel connections are connected and composed interchange stand-by circuit 6, two two of branch roads end that is connected in parallel is terminals 4 and the terminals 5 that exchange stand-by circuit 6, exchange the terminals 4 of stand-by circuit 6 and terminals 5 and be connected in parallel on the circuit unit in the series circuit, the course of work that exchanges stand-by circuit 6 is:
Because exchanging stand-by circuit 6 is to be connected to form by two identical branch road reverse parallel connections. and this branch road is to be composed in series by direct current stand-by circuit 3 and a diode D, therefore, the course of work that exchanges stand-by circuit 6 is that alternating current is resolved into two half-wave work, be positive half wave and negative half-wave, each half-wave has only a branch road job, and another branch road ends owing to the effect of diode D, so, the course of work that exchanges stand-by circuit 6 is to exchange two branch road alternation processes of reverse parallel connection connection in the stand-by circuit 6, and each branch road course of work is identical with direct current stand-by circuit 3 courses of work.Two terminals 4 and the 5 circuit unit two ends that are connected in parallel in the AC series circuit that will exchange stand-by circuit 6 during use get final product.In addition, each subcircuits that exchanges stand-by circuit 6 among Fig. 2 is the negative pole composition that direct current stand-by circuit 3 forward ends 1 connect diode D, the positive pole composition branch road effect that actual DC stand-by circuit 3 negative terminals 2 connect diode D is the same, therefore, this branch road not being formed the interchange stand-by circuit describes.
As shown in Figure 3, be to establish direct current stand-by circuit embodiment 1 for the open circuit of the circuit unit in the DC series circuit, DW1 is a voltage stabilizing didoe among the figure, this voltage stabilizing didoe constitutes direct current stand-by circuit 3, the negative pole of voltage stabilizing didoe DW1 is the anode 1 of direct current stand-by circuit 3, and the positive pole of voltage stabilizing didoe DW1 is the negative terminal 2 of direct current stand-by circuit 3.
The burning voltage of voltage stabilizing didoe DW1 greater than and near the maximum working voltage of the circuit unit in the series circuit, the operating current of voltage stabilizing didoe DW1 is greater than the maximum operating currenbt of series circuit.During the series circuit operate as normal, voltage stabilizing didoe DW1 both end voltage does not reach burning voltage, and voltage stabilizing didoe DW1 is in cut-off state, does not have electric energy loss.When having only the circuit unit open circuit in the series circuit, voltage at open-circuit unit institute parallel voltage-stabilizing diode DW1 two ends reaches the burning voltage of voltage stabilizing didoe DW1 immediately, this voltage stabilizing didoe DW1 produces the burning voltage of keeping voltage stabilizing didoe DW1 at two ends, open-circuit unit, make other circuit unit both end voltage value in the series circuit that big variation not take place, and from voltage stabilizing didoe DW1 in parallel electric current by required work, guarantee other circuit unit operate as normal in the series circuit.
As shown in Figure 4, be to establish direct current stand-by circuit embodiment 2 for the open circuit of the circuit unit in the DC series circuit.DW2 among the figure is a voltage stabilizing didoe, and Ta is a NPN type triode, and Rc2, R2 are resistance, form direct current stand-by circuit 3 by these elements.The collector electrode of triode Ta links to each other with the end of resistance R c2, the base stage of triode Ta links to each other with an end of resistance R 2, resistance R 2 other ends link to each other with the positive pole of voltage stabilizing didoe DW2, the negative pole of voltage stabilizing didoe DW2 links to each other with the other end of resistance R c2 and draws a line, this line is the anode 1 of direct current stand-by circuit 3, and the emitter lead-out wire of triode Ta is the negative terminal 2 of direct current stand-by circuit 3.
The burning voltage of voltage stabilizing didoe DW2 greater than and near the maximum working voltage of the circuit unit in the series circuit, the collector electrode operating current of triode Ta is greater than the maximum operating currenbt of series circuit, during the series circuit operate as normal, the voltage at voltage stabilizing didoe DW2 two ends is less than the burning voltage of voltage stabilizing didoe DW2, voltage stabilizing didoe DW2 both end voltage does not reach burning voltage and is in cut-off state, there is not electric energy loss, therefore, the base stage of triode Ta does not have electric current yet, triode Ta is in cut-off state, does not have electric energy loss.When circuit for series circuit open circuit, voltage at the voltage stabilizing didoe DW2 two ends of open-circuit unit institute parallel connection direct stand-by circuit 3 reaches the burning voltage of voltage stabilizing didoe DW2 immediately, there is electric current to provide to the base stage of triode Ta through voltage stabilizing didoe DW2, make triode Ta conducting, produce at two ends, open-circuit unit by triode Ta collector junction and electric Rc2 and to keep voltage, keep voltage greater than and tap into the burning voltage of voltage stabilizing didoe DW2, make voltage stabilizing didoe DW2 electric current be arranged, make 3 continuous operations of direct current stand-by circuit by keeping the base current of triode Ta.Like this, guarantee that big variation does not take place other circuit unit both end voltage value in the series circuit, and from the direct current stand-by circuit 3 the formed electric current by required work, other circuit unit operate as normal in the assurance series circuit.
As shown in Figure 5, be to establish direct current stand-by circuit embodiment 3 for the open circuit of the circuit unit in the DC series circuit.DW3 among the figure is a voltage stabilizing didoe, and Tb is the positive-negative-positive triode, and Rc3, R3 are resistance, form direct current stand-by circuit 3 by these elements.The collector electrode of triode Tb links to each other with the end of resistance R c3, the base stage of triode Tb links to each other with an end of resistance R 3, resistance R 3 other ends link to each other with the negative pole of voltage stabilizing didoe DW3, the positive pole of voltage stabilizing didoe DW3 links to each other with the other end of resistance R c3 and draws a line, this line is the negative terminal 2 of direct current stand-by circuit 3, and the emitter lead-out wire of triode Tb is the anode 1 of direct current stand-by circuit 3.
The main difference of Fig. 5 and Fig. 4 is that Fig. 5 triode Tb is a positive-negative-positive, and Fig. 4 triode Ta is the NPN type, and the course of work of Fig. 5 is identical with the course of work of Fig. 4.
As shown in Figure 6, be to establish direct current stand-by circuit embodiment 4 for the open circuit of the circuit unit in the DC series circuit.DW4 among the figure is a voltage stabilizing didoe, and SCR controllable silicon, R4 are resistance, forms direct current stand-by circuit 3 by these elements.The anode of controllable silicon SCR links to each other with an end of resistance R 4, the control utmost point of controllable silicon SCR links to each other with the positive pole of voltage stabilizing didoe DW4, the negative pole of voltage stabilizing didoe DW2 links to each other with the other end of resistance R 4 and draws a line, this line is the anode 1 of direct current stand-by circuit 3, and the cathode terminal of controllable silicon SCR is the negative terminal 2 of direct current stand-by circuit 3.
The burning voltage of voltage stabilizing didoe DW4 greater than and near the maximum working voltage of the circuit unit in the series circuit, the operating current of controllable silicon SCR is greater than the maximum operating currenbt of series circuit, during the series circuit operate as normal, the voltage at voltage stabilizing didoe DW4 two ends is less than the burning voltage of voltage stabilizing didoe DW4, and voltage stabilizing didoe DW4 is in cut-off state, does not have electric energy loss, therefore, the control utmost point of controllable silicon SCR does not have electric current yet, and controllable silicon SCR is in cut-off state, does not have electric energy loss.When the circuit unit in series circuit is opened a way, be added to the voltage at voltage stabilizing didoe DW4 two ends of open-circuit in parallel unit direct current stand-by circuit 3 reach the burning voltage of voltage stabilizing didoe DW4 immediately, there is electric current to pass through the control utmost point of controllable silicon SCR by voltage stabilizing didoe DW4, the controllable silicon SCR conducting, produce at two ends, open-circuit unit by controllable silicon SCR and resistance R 4 and to keep voltage, make other circuit unit both end voltage value in the series circuit that big variation not take place, and pass through needed operating current from controllable silicon SCR and resistance R 4, guarantee other circuit unit operate as normal in the series circuit.
Among Fig. 3,, make direct current stand-by circuit 3 with voltage stabilizing didoe DW1 element and be suitable for little current DC series circuit because the operating current of voltage stabilizing didoe generally is not very big.Among Fig. 4, Fig. 5, because the operating current of triode Ta, Tb is generally bigger, the major control element of making direct current stand-by circuit 3 with triode Ta, Tb is suitable for than the heavy DC series circuit.Because the operating current during the controllable silicon SCR conducting can be very big, make the major control element of direct current stand-by circuit 3 among Fig. 6, be suitable for the heavy DC series circuit with controllable silicon SCR.Also innumerable by the various technical scheme of forming direct current stand-by circuit 3 of kinds of electronic components, Fig. 3, Fig. 4, Fig. 5, Fig. 6 are several optimal technical solution embodiment, are not unique method, are all contained lid by this patent as long as satisfy the requirement of direct current stand-by circuit 3.
Fig. 7, Fig. 8, Fig. 9 establish pressure regulation current-limiting circuit technical scheme block diagram for the series circuit constituent apparatus.Fig. 7 is the single-stage pressure regulation current-limiting circuit technical scheme block diagram of establishing for the series circuit constituent apparatus, Fig. 8 establishes twin-stage pressure regulation current-limiting circuit technical scheme block diagram for the series circuit constituent apparatus, and Fig. 9 is the level pressure regulation current-limiting circuit technical scheme block diagram of establishing for the series circuit constituent apparatus.RL1 among the figure, RL2, RL3 ... RLn is a current-limiting resistance, current-limiting resistance RL1, RL2, RL3 ... RLn is connected in series successively, 61,62,63,6n, 6f is current-limiting resistance RL1 at different levels, RL2, RL3 ... the end that is connected in series of RLn, the 61st, the link of the end of current-limiting resistance RL1, the 62nd, the link that the end of the other end of current-limiting resistance RL1 and current-limiting resistance RL2 is in series, the 63rd, the link that the end of the other end of current-limiting resistance RL2 and current-limiting resistance RL3 is in series, 6f is the other end of final stage current-limiting resistance RLn, it is last end of final stage current-limiting resistance, T1, T2, T3 ... Tn is a triode, triode T1, T2, T3 ... the emitter of Tn, collector electrode is connected across current-limiting resistance RL1 at different levels respectively, RL2, RL3 ... the tie point 61 that RLn is in series, 62,63, between 6n and the 6f, b1, b2, b3, bn is respectively triode T1, T2, T3 ... the base stage of Tn, control triode T1, T2, T3 ... the emitter of Tn, the change in voltage of collector electrode is carried out the pressure regulation current limliting.Operation principle is: when supply voltage hangs down, be subjected to transistor base b1, b2, b3 ... bn control, triode T1, T2, T3 ... Tn is conducting, make current-limiting resistance link 61,62,63 ... magnitude of voltage is all very little between 6n and current-limiting resistance link 6f, supply voltage directly is added on the operating circuit, and the circuit unit in the series circuit can obtain enough operating voltages.Constantly raise with supply voltage, be subjected to transistor base b1, b2, b3, bn control, triode T1 is changed to magnifying state by conducting state, triode T1 collector electrode, the emission voltage across poles increases, the voltage at current-limiting resistance RL1 two ends also by little to big variation, make current-limiting resistance link 61 and current-limiting resistance link 6f between magnitude of voltage increase to some extent, this increases the continuous lift-off value of magnitude of voltage basic neutralisation supply voltage, circuit unit in the series circuit can obtain reliable operating voltage, thereby obtain reliable operating current, this moment triode T2, T3 ... Tn is conducting, current-limiting resistance link 62,63, magnitude of voltage is also all very little between 6n and current-limiting resistance link 6f.Constantly continue to raise with supply voltage, be subjected to transistor base b1, b2, b3, bn control, triode T1 is changed to cut-off state by magnifying state, triode T1 by make current-limiting resistance RL1 by with the identical electric current of circuit unit in the series circuit, produce bigger voltage drop at current-limiting resistance RL1 two ends, the voltage drop basic neutralisation supply voltage lift-off value that current-limiting resistance RL1 two ends produce, make the circuit unit in the series circuit can obtain reliable operating voltage, thereby obtain reliable operating current, this moment triode T2, T3 ... Tn is conducting, current-limiting resistance link 62,63, magnitude of voltage is also all very little between 6n and current-limiting resistance link 6f.The rising that supply voltage keeps, the 1st grade of pressure regulation current-limiting circuit T1 ends, the 1st grade of pressure regulation current-limiting circuit of the 2nd grade of pressure regulation current-limiting circuit phase equally started working, and the like ... when supply voltage is very high, triode T1, T2, T3 ... Tn ends, current-limiting resistance RL1, RL2, RL3 ... RLn be connected in series and by with the identical electric current of circuit unit in the series circuit, at current-limiting resistance RL1, RL2, RL3 ... RLn series circuit two ends produce big voltage drop, this voltage drop basic neutralisation supply voltage lift-off value, the circuit unit in the series circuit can obtain reliable operating voltage.Thereby obtain reliable operating current.When supply voltage from high voltage when low-voltage changes, otherwise the course of work.
Figure 10, Figure 11, be to establish twin-stage pressure regulation current-limiting circuit embodiment for the series circuit constituent apparatus; Figure 12 establishes three grades of pressure regulation current-limiting circuit embodiment for the series circuit constituent apparatus.In the circuit diagram, T1, T2, T3, Tc1, Tc2, Tc3, Tc4, Tc5, Tc6, Tc7 is a triode, b1, b2, b3 is triode T1, T2, the base stage of T3, DW10, DW20, DW30, DW40 is a voltage stabilizing didoe, RL1, RL2, RL3 is current-limiting resistance Rb10, Rb20, Rb11, Rb21, Rb30, Rb40, Rb31, Rb41, Rb50, Rb60, Rb70, Rb51, Rb61, Rb71, R51, R61, R71, R52, R62, R72 is a resistance, 61,62,63,6f is current-limiting resistance RL1, RL2, the link of RL3 series connection, Vcc is the positive pole of power supply, and ┻ is ground.The meaning of the symbol of the T1 among the figure, T2, T3, RLI, RL2, RL3, b1, b2, b3,61,62,63,6f, circuit connect, the course of work such as Fig. 7, Fig. 8, Fig. 9, in 1 utmost point, 2 grades, the effect of 3 grades of pressure regulation current-limiting circuits identical.
In Figure 10: triode T1, T2, Tc1, Tc2 is the NPN type, emitter all connects together and connects the 6f end, triode T1 collector electrode connects 61 ends, triode T2 collector electrode connects 62 ends, triode T1 base stage b1, triode Tc1 collector electrode terminates at resistance R b10 one, the resistance R b10 other end is connected on the power Vcc, triode T2 base stage b2, triode Tc2 collector electrode terminates at resistance R b20 one, the resistance R b20 other end is connected on the power Vcc, triode Tc1 base stage connects the positive pole of voltage stabilizing didoe DW10, the end of the negative pole connecting resistance Rb11 of voltage stabilizing didoe DW10, the other end of resistance R b11 is connected on the power Vcc, triode Tc2 base stage connects the positive pole of voltage stabilizing didoe DW20, the end of the negative pole connecting resistance Rb21 of voltage stabilizing didoe DW20, the other end of resistance R b21 is connected on the power Vcc, and the circuit unit in the series circuit is connected on 61 ends and 6f end respectively.
Pressure regulation current-limiting circuit operation principle is among Figure 10: when supply voltage hangs down, be added to voltage stabilizing didoe DW10, the voltage of voltage stabilizing didoe DW20 is lower than the operating voltage of voltage stabilizing didoe, so all end, triode Tc1, Tc2 does not end because of there being base current, be subjected to triode T1, T2 base stage b1, continuous resistance R b10 of b2 and Rb20 control, triode T1, T2, all conductings, make current-limiting resistance link 61,62 and current-limiting resistance link 6f between magnitude of voltage all very little, supply voltage directly is added on the operating circuit, circuit unit in the series circuit can obtain enough operating voltages, thereby obtains enough operating currents.Constantly raise with supply voltage, be added to voltage stabilizing didoe DW10, the voltage of voltage stabilizing didoe DW20 is also increasing, voltage stabilizing didoe DW10 is also by ending to little electric current, big electric current changes, triode Tc1 because of base current by by to little electric current, big electric current change and make triode Tc1 by cut-off state to magnifying state, conducting state changes, controlled by triode T1 base stage b1, triode T1 by conducting state to magnifying state, cut-off state changes, the voltage at current-limiting resistance RL1 two ends also by little to big variation, triode T1 by make current-limiting resistance RL1 by with the identical electric current of circuit unit in the series circuit, produce bigger voltage drop at current-limiting resistance RL1 two ends, the voltage drop basic neutralisation supply voltage lift-off value that current-limiting resistance RL1 two ends produce, make the circuit unit in the series circuit can obtain reliable operating voltage, thereby obtain reliable operating current, this moment, triode T2 also was in conducting state, and magnitude of voltage is also very little between current-limiting resistance link 62 and current-limiting resistance link 6f.The rising that supply voltage keeps, the 1st grade of pressure regulation current-limiting circuit triode T1 is by inoperative, the 1st grade of pressure regulation current-limiting circuit of the 2nd grade of pressure regulation current-limiting circuit phase equally started working, and the like ... when supply voltage is very high, triode T1, T2 ends, current-limiting resistance RL1, RL2 be connected in series and by with the identical electric current of circuit unit in the series circuit, at current-limiting resistance RL1, RL2 series circuit two ends produce big voltage drop, this voltage drop basic neutralisation supply voltage lift-off value, the circuit unit in the series circuit can obtain reliable operating voltage.Thereby obtain reliable operating current.When supply voltage from high voltage when low-voltage changes, otherwise the course of work.
In Figure 11: triode T1, T2, Tc3, Tc4 is a positive-negative-positive, triode T1, the Tc3 emitter all connects together and connects 61 ends, triode T2, the Tc4 emitter all connects together and connects 62 ends, triode T1, the T2 collector electrode connects together and connects the 6f end, triode T1 base stage b1, triode Tc3 collector electrode terminates at resistance R b30 one, triode T2 base stage b2, triode Tc4 collector electrode terminates at resistance R b40 one, triode Tc3 base stage connects the negative pole of voltage stabilizing didoe DW30, the end of the anodal connecting resistance Rb31 of voltage stabilizing didoe DW30 and the other end of resistance R b30, the other end of resistance R b31 is connected on the power supply 6f, triode Tc4 base stage connects the negative pole of voltage stabilizing didoe DW40, the end of the anodal connecting resistance Rb41 of voltage stabilizing didoe DW40 and the other end of resistance R b40, the other end of resistance R b41 is connected on the power supply 6f, and the circuit unit in the series circuit is connected on 61 ends or 6f end.
Pressure regulation current-limiting circuit operation principle is among Figure 11: when supply voltage hangs down, be added to voltage stabilizing didoe DW30, the voltage of voltage stabilizing didoe DW40 is lower than the operating voltage of voltage stabilizing didoe, so all end, triode Tc1, Tc2 does not end because of there being base current, be subjected to triode T1, T2 base stage b1, continuous resistance R b30 of b2 and Rb40 control, triode T1, T2, all conductings, make current-limiting resistance link 61,62 and current-limiting resistance link 6f between magnitude of voltage all very little, supply voltage directly is added in the circuit unit in the series circuit, and the circuit unit in the series circuit can obtain enough operating voltages.Constantly raise with supply voltage, be added to voltage stabilizing didoe DW30, the voltage of voltage stabilizing didoe DW40 is also increasing, voltage stabilizing didoe DW30 is also by ending to little electric current, big electric current changes, triode Tc3 base current is by ending to little electric current, big electric current change and make triode Tc3 by cut-off state to magnifying state, conducting state changes, controlled by triode T1 base stage b1, triode T1 by conducting state to magnifying state, cut-off state changes, the voltage at current-limiting resistance RL1 two ends also by little to big variation, triode T1 by make current-limiting resistance RL1 by with the identical electric current of circuit unit in the series circuit, produce bigger voltage drop at current-limiting resistance RL1 two ends, the voltage drop basic neutralisation supply voltage lift-off value that current-limiting resistance RL1 two ends produce, make the circuit unit in the series circuit can obtain reliable operating voltage, thereby obtain reliable operating current, this moment, triode T2 also was in conducting state, and magnitude of voltage is also very little between current-limiting resistance link 62 and current-limiting resistance link 6f.The rising that supply voltage keeps, the 1st grade of pressure regulation current-limiting circuit triode T1 is by inoperative, the 1st grade of pressure regulation current-limiting circuit of the 2nd grade of pressure regulation current-limiting circuit phase this moment equally started working, and the like ... when supply voltage is very high, triode T1, T2 ends, current-limiting resistance RL1, current limliting RL2 be connected in series and by with the identical electric current of circuit unit in the series circuit, at current-limiting resistance RL1, RL2 series circuit two ends produce big voltage drop, this voltage drop basic neutralisation supply voltage lift-off value, the circuit unit in the series circuit can obtain reliable operating voltage.Thereby obtain reliable operating current.When supply voltage from high voltage when low-voltage changes, otherwise the course of work.
In Figure 12: triode T1, T2, T3, Tc5, Tc6, Tc7 is a positive-negative-positive, triode T1, the Tc5 emitter connects together and connects 61 ends, triode T2, the Tc6 emitter connects together and connects 62 ends, triode T3, the Tc7 emitter connects together and connects 63 ends, triode T1, T2, the T2 collector electrode connects together and connects the 6f end, triode T1 base stage b1, triode Tc5 collector electrode terminates at resistance R b50 one, triode T2 base stage b2, triode Tc6 collector electrode terminates at resistance R b60 one, triode T3 base stage b3, triode Tc7 collector electrode terminates at resistance R b70 one, the resistance R b50 other end, the resistance R b60 other end, the resistance R b70 other end is connected together and is connected with ground ┻, triode Tc5 base stage terminates at resistance R b51 one, triode Tc6 base stage terminates at resistance R b61 one, triode Tc7 base stage terminates at resistance R b71 one, the other end of resistance R b51 and resistance R 51 1 ends, resistance R 52 1 terminates at together, the other end of resistance R b61 and resistance R 61 1 ends, resistance R 62 1 terminates at together, the other end of resistance R b71 and resistance R 71 1 ends, resistance R 72 1 terminates at together, the other end of resistance R 51, the other end of resistance R 61, the other end and the power Vcc of resistance R 71 are connected together, the other end of resistance R 52, the other end of resistance R 62, the other end of resistance R 72 be connected with ground ┻, the circuit unit in the series circuit is connected on 61 ends and 6f end respectively.
Pressure regulation current-limiting circuit operation principle is among Figure 12: when supply voltage hangs down, by resistance R 51 and R52, resistance R 61 and R62, after the dividing potential drop of resistance R 71 and R72, through resistance R b51, resistance R b61, resistance R b71 is added to triode Tc5 respectively, Tc6, between the emitter junction of Tc7, end because emitter junction voltage is low, be subjected to triode T1, T2, T3 base stage b1, b2, the b3 resistance R b50 that links to each other, Rb60, Rb70 control, triode T1, T2, T3 is conducting, make current-limiting resistance link 61,62,63 and current-limiting resistance link 6f between magnitude of voltage all very little, supply voltage directly is added on the circuit unit in the series circuit, and the circuit unit in the series circuit can obtain enough operating voltages.Constantly raise with supply voltage, by resistance R 51 and R52, dividing potential drop after, voltage is added between triode Tc5 emitter junction through resistance R b51, because of emitter junction voltage changes from low to high, and triode Tc5 by cut-off state to magnifying state, conducting state changes, controlled by triode T1 base stage b1, triode T1 by conducting state to magnifying state, cut-off state changes, the voltage at current-limiting resistance RL1 two ends also by little to big variation, triode T1 by make current-limiting resistance RL1 by with the identical electric current of circuit unit in the series circuit, produce bigger voltage drop at current-limiting resistance RL1 two ends, the voltage drop basic neutralisation supply voltage lift-off value that current-limiting resistance RL1 two ends produce, make the circuit unit in the series circuit can obtain reliable operating voltage, thereby obtain reliable operating current, this moment triode T2, T3 also is in conducting state, current-limiting resistance link 62,63 and current-limiting resistance link 6f between magnitude of voltage also very little.The rising that supply voltage keeps, the 1st grade of pressure regulation current-limiting circuit triode T1 is by inoperative, the 2nd grade of this moment, 3rd level pressure regulation current-limiting circuit the 1st grade of pressure regulation current-limiting circuit is mutually equally started working, and the like ... when supply voltage is very high, triode T1, T2, T3 ends, current-limiting resistance RL1, RL2, RL3 be connected in series by with the identical electric current of circuit unit in the series circuit, at current-limiting resistance RL1, RL2, RL3 series circuit two ends produce big voltage drop, this voltage drop basic neutralisation supply voltage lift-off value, the circuit unit in the series circuit can obtain reliable operating voltage.Thereby obtain reliable operating current.When supply voltage from high voltage when low-voltage changes, otherwise the course of work.
Because kinds of electronic components is various, the technical scheme of forming the pressure regulation current-limiting circuit is also innumerable, Figure 10, Figure 11, Figure 12 are optimum embodiment, are not unique method, are all contained lid by this patent as long as satisfy the requirement of pressure regulation current-limiting circuit such as Fig. 7, Fig. 8, Fig. 9.
As shown in figure 13, be to contain the DC series circuit and establish stand-by circuit technical scheme block diagram for the open circuit of the circuit unit in the DC series circuit.As can be seen from Figure 13, each circuit unit is connected in series, power by DC power supply U, + be the positive pole of power supply,-be the negative pole of power supply, each direct current stand-by circuit 3 is connected in parallel on the two ends of each circuit unit, the anode 1 connection circuit unit positive pole of direct current stand-by circuit 3, the negative terminal 2 connection circuit unit negative poles of direct current stand-by circuit 3, the function of direct current stand-by circuit 3 and effect are identical as Fig. 1.
As shown in figure 14, be to contain AC series circuit to exchange stand-by circuit technical scheme block diagram with establishing for the open circuit of the circuit unit in the AC series circuit.As can be seen from Figure 14, each circuit unit is connected in series, and by AC power～U power supply, each two ends 4,5 that exchange stand-by circuit 6 is connected in parallel on each circuit unit two ends, and the function and the effect that exchange stand-by circuit 6 are identical as Fig. 2.
As shown in figure 15, be to contain the DC series led circuit and for being that the circuit unit open circuit is established direct current stand-by circuit embodiment among the DC series LED with single LED.LED is a light-emitting diode among the figure, be equivalent to the circuit unit in Figure 13 series circuit, DW1 is a voltage stabilizing didoe, plays the effect of direct current stand-by circuit 3, operation principle is identical with Fig. 3, the negative pole of voltage stabilizing didoe DW1 is direct current stand-by circuit 3 negative terminals 1, connects the positive pole of LED, and the positive pole of voltage stabilizing didoe DW1 is direct current stand-by circuit 3 anodes 2, connect the negative pole of LED, + be the positive pole of DC power supply ,-be the negative pole of DC power supply, Figure 15 operation principle is identical with Figure 13
As shown in figure 16, be to contain the DC series led circuit and for being that the circuit unit open circuit is established direct current stand-by circuit embodiment among the DC series LED with three LED series connection.LED is a light-emitting diode among the figure, be equivalent to the circuit unit in Figure 13 series circuit after three LED connect, DW1 is a voltage stabilizing didoe, plays the effect of direct current stand-by circuit 3, operation principle is identical with Fig. 3, the negative pole of voltage stabilizing didoe DW1 is direct current stand-by circuit 3 anodes 1, connects the positive pole of LED, and the positive pole of voltage stabilizing didoe DW1 is direct current stand-by circuit 3 negative terminals 2, connect the negative pole of LED, + be the positive pole of DC power supply ,-be the negative pole of DC power supply, Figure 16 operation principle is identical with Figure 13.
As shown in figure 17, be to contain the DC series led circuit and for being that the circuit unit open circuit is established direct current stand-by circuit embodiment among the DC series LED with many LED series connection.LED is a light-emitting diode among the figure, be equivalent to the circuit unit in Figure 13 series circuit after many LED connect, DW1 is a voltage stabilizing didoe, plays the effect of direct current stand-by circuit 3, operation principle is identical with Fig. 3, the negative pole of voltage stabilizing didoe DW1 is direct current stand-by circuit 3 anodes 1, connects the positive pole of LED, and the positive pole of voltage stabilizing didoe DW1 is direct current stand-by circuit 3 negative terminals 2, connect the negative pole of LED, + be the positive pole of DC power supply ,-be the negative pole of DC power supply, Figure 17 operation principle is identical with Figure 13.
As shown in figure 18, be to contain the DC series led circuit and for being that the circuit unit open circuit is established the direct current stand-by circuit among the DC series LED, and the direct current stand-by circuit is that alter-parallel connects embodiment with 2 LED series connection.LED is a light-emitting diode among the figure, after connecting, two LED are equivalent to the circuit unit in Figure 13 series circuit, DW1 is a voltage stabilizing didoe, play the effect of direct current stand-by circuit 3, voltage stabilizing didoe DW1 intersection is connected across two LED two ends, operation principle is identical with Fig. 3, the negative pole of voltage stabilizing didoe DW1 is direct current stand-by circuit 3 anodes 1, connect the positive pole of LED, the positive pole of voltage stabilizing didoe DW1 is direct current stand-by circuit 3 negative terminals 2, connects the negative pole of LED, + be the positive pole of DC power supply,-be the negative pole of DC power supply, the characteristics of this circuit are that voltage stabilizing didoe DW1 intersection is connected across each circuit unit two ends, Figure 18 operation principle is identical with Figure 13.
As shown in figure 19, be the direct current stand-by circuit embodiment 1 that contains DC series great power LED circuit and establish for DC series great power LED open circuit.LED is a large-power light-emitting diodes among the figure, be equivalent to the circuit unit in Figure 13 series circuit, the circuit of Ta, DW2, Rc2, R2 symbolic significance and composition and operation principle are identical with Fig. 4 among the figure, constitute direct current stand- by circuit 3,1 end of direct current stand-by circuit 3 connects the positive pole of the cross-over connection LED of institute, and 2 ends of direct current stand-by circuit 3 connect the negative pole of the cross-over connection LED of institute ,+be the positive pole of DC power supply,-be the negative pole of DC power supply, Figure 19 operation principle is identical with Figure 13.
As shown in figure 20, be the direct current stand-by circuit embodiment 2 that contains DC series great power LED circuit and establish for DC series great power LED open circuit.LED is a large-power light-emitting diodes among the figure, be equivalent to the circuit unit in Figure 13 series circuit, the circuit of SCR, DW4, R4 symbolic significance and composition and circuit working principle are identical with Fig. 6 among the figure, constitute direct current stand- by circuit 3,1 end of direct current stand-by circuit 3 connects the positive pole of the cross-over connection LED of institute, and 2 ends of direct current stand-by circuit 3 connect the negative pole of the cross-over connection LED of institute ,+be the positive pole of DC power supply,-be the negative pole of DC power supply, Figure 20 operation principle is identical with Figure 13.
As shown in figure 21, be the single LED circuit for lamp embodiment that contains the DC series led circuit, establishes the direct current stand-by circuit and finish for DC series LED open circuit with the current-limiting resistance current-limiting circuit.LED is a light-emitting diode among the figure, is equivalent to the circuit unit in Figure 13 series circuit, and DW1 is a voltage stabilizing didoe, plays 3 effects of direct current stand-by circuit, and operation principle is identical with Fig. 3, and RL is a current-limiting resistance.The negative pole of voltage stabilizing didoe DW1 is the anode 1 of direct current stand-by circuit 3, connect the positive pole of LED, the positive pole of voltage stabilizing didoe DW1 is the negative terminal 2 of direct current stand-by circuit 3, connect the negative pole of LED, make direct current stand-by circuit 3 be connected in parallel on each LED two ends, form the LED series arm that direct current stand-by circuit 3 is arranged, this branch road and current-limiting resistance RL are composed in series the single LED circuit for lamp.U is a DC power supply ,+be the positive pole of DC power supply ,-be the negative pole of DC power supply, the direct current stand-by circuit operation principle of Figure 21 is identical with Figure 13.Because this LED circuit for lamp is by current-limiting resistance RL current limliting, so this LED circuit for lamp is adapted to the stabilized power supply power supply.
As shown in figure 22, be the LED multi-path circuit for lamp embodiment that contains the DC series led circuit, establishes the direct current stand-by circuit and finish for DC series LED open circuit with the current-limiting resistance current-limiting circuit.Each subcircuits among Figure 22 is identical with Figure 21.Because this LED circuit for lamp is by electric current limliting resistance RL current limliting, so this LED circuit for lamp is adapted to the stabilized power supply power supply.
As shown in figure 23, be by city's AC-powered, through the full-wave rectifying circuit rectification, contain two-stage pressure-regulating current-limiting circuit current limliting, DC series led circuit and establish the embodiment of direct current stand-by circuit formation single LED circuit for lamp for DC series LED open circuit.LED is a light-emitting diode among the figure, be equivalent to the circuit unit in Figure 13 series circuit, DW1 is a voltage stabilizing didoe, play 3 effects of direct current stand-by circuit, operation principle is identical with Fig. 3, and the negative pole of voltage stabilizing didoe DW1 is direct current stand-by circuit 3 anodes 1, connects the positive pole of LED, the positive pole of voltage stabilizing didoe DW1 is direct current stand-by circuit 3 negative terminals 2, connects the negative pole of LED.The symbolic significance of T1, T2, Tc3, Tc4, DW30, DW40, RL1, RL2, Rb30, Rb40, Rb31, Rb41, b1, b2,61,62,6f and the circuit of composition and circuit working principle are identical with Figure 11, are the two poles of the earth pressure regulation current-limiting circuits.┻ is circuit ground.Contain polarity pressure regulation current-limiting circuit, voltage stabilizing didoe DW1 composition direct current stand-by circuit 3, branch road of LED series circuit formation, be called the branch road of LED lamp.Four rectifier diode Dz are arranged in the circuit, wherein the negative pole of two rectifier diode Dz links to each other and connects pressure regulation current-limiting circuit 61 ends, the positive pole of other two rectifier diode Dz links to each other and ground connection ┻ end, the other end of the other end of a rectifier diode Dz and the rectifier diode Dz that links to each other with ┻ of linking to each other with 61 ends connects together and constitutes an end A of alternating current input, the other end of the other end of the another rectifier diode Dz that is connected with 61 ends and the another rectifier diode Dz that is connected with the ┻ end connects together and constitutes the other end B of alternating current input, like this, formed bridge rectifier by four rectifier diode Dz, city's alternating current connects the A end of bridge rectifier, the B end is to this circuit supply.Owing to adopt the two poles of the earth pressure regulation current-limiting circuit, the working range of city's alternating current can be+10%---change between-10%, the LED circuit for lamp of series connection can operate as normal.Because the LED series connection is used, and reduces current-limiting resistance in a large number.Therefore, very big saves energy.
As shown in figure 24, be by city's AC-powered, through the full-wave rectifying circuit rectification, contain two-stage pressure-regulating current-limiting circuit current limliting, DC series led circuit and the embodiment of the direct current stand-by circuit formation LED multi-path circuit for lamp established for DC series LED open circuit.Each branch road in this LED multi-path circuit for lamp is identical with Figure 23.The circuit of the symbolic significance of Dz, A, B and composition and circuit working principle are identical with Dz, A, B among Figure 23 in the circuit, like this, formed bridge rectifier by four rectifier diode Dz, A end, B that city's alternating current can connect bridge rectifier hold this circuit supply.Owing to adopt the two poles of the earth pressure regulation current-limiting circuit, the working range of city's alternating current can be at city's alternating current+10%---change between-10%.
As shown in figure 25, be by city's AC-powered, through halfwave rectifier, single-stage pressure regulation current-limiting circuit current limliting, the single LED circuit for lamp embodiment that the direct current stand-by circuit of establishing for DC series LED open circuit is finished.LED is a light-emitting diode among the figure, be equivalent to the circuit unit in Figure 13 series circuit, DW1 is a voltage stabilizing didoe, play 3 effects of direct current stand-by circuit, operation principle is identical with Fig. 3, and the negative pole of voltage stabilizing didoe DW1 is direct current stand-by circuit 3 anodes 1, connects the positive pole of LED, the positive pole of voltage stabilizing didoe DW1 is direct current stand-by circuit 3 negative terminals 2, connects the negative pole of LED.The symbolic significance of T1, Tc3, DW30, RL1, Rb30, Rb31, b1,61,6f and the circuit of composition and circuit working principle are identical with one-level pressure regulation current-limiting circuit among Figure 11, it is a utmost point pressure regulation current-limiting circuit, circuit unit anode in the series circuit links to each other with the 6f of pressure regulation current-limiting circuit end, form the branch road that contains single-stage pressure regulation current-limiting circuit, LED series circuit and direct current stand-by circuit 3, the branch road two ends are 61 ends of pressure regulation current-limiting circuit and the negative terminal of LED series circuit.Dz is the commutating pole pipe in the circuit, the negative pole of rectifier diode Dz connects pressure regulation current-limiting circuit 61 ends, the other end of rectifier diode Dz is an end A of alternating current input, B is the other end of alternating current input, connect the negative terminal of LED series circuit, like this, Dz constitutes half-wave rectifying circuit by rectifier diode, and city's alternating current is held this circuit supply by A end, B.The working range of city's alternating current can be+10%---and change between-10%, the LED circuit for lamp can operate as normal.Because the power supply of this LED circuit for lamp is the half-wave rectifying circuit power supply, so, scintillation appears when LED is luminous, and therefore, it is best that this LED lamp is done cluster of lamps, ornamental effect.
As shown in figure 26, be by city's AC-powered, a plurality of low-voltage alternating-current bulbs are connected in series on the power supply, and each bulb is provided with the interchange stand-by circuit, constitutes complete bulb powered circuit embodiments.DP is the alternating current bulb among the figure, is equivalent to the circuit unit in Figure 14 series circuit; The circuit of the symbolic significance of Ta, DW2, Rc2, R2 and composition and circuit working principle are identical with Fig. 4 circuit among the figure, it is identical that Ta, DW2, Rc2, R2 and diode D form circuit connecting method and Fig. 2 of exchanging stand-by circuit 6, it is identical with the interchange stand-by circuit 6 of Figure 14 to exchange stand-by circuit 6 courses of work, 4 ends, 5 end spaies that exchange stand-by circuit 6 connect and connect the two ends of bulb, circuit power is by city's AC-powered, and Figure 26 operation principle is identical with Figure 14.
As shown in figure 27, be by city's AC-powered, a plurality of low-voltage alternating-current electric bells are connected in series on the power supply, and each electric bell is provided with the interchange stand-by circuit, constitutes complete electric bell power supply circuits embodiment.DL is an electric bell among the figure, is equivalent to the circuit unit in Figure 14 series circuit; The circuit of the symbolic significance of Tb, DW3, Rc3, R3 and composition and circuit working principle are identical with Fig. 5 circuit among the figure, it is identical that Tb, DW3, Rc3, R3 and diode D form circuit connecting method and Fig. 2 of exchanging stand-by circuit 6, it is identical with the interchange stand-by circuit 6 of Figure 14 to exchange stand-by circuit 6 courses of work, 4 ends, 5 end spaies that exchange stand-by circuit 6 connect and connect the two ends of electric bell, circuit power is by city's AC-powered, and Figure 27 operation principle is identical with Figure 14.
As shown in figure 28, be by city's AC-powered, equipment such as low-voltage alternating-current electric bell, motor, electric bell are connected on the power supply by being connected in series, and each equipment is provided with the interchange stand-by circuit, constitutes complete device power supply circuits embodiment.DL is that magneto bell, MD are that alternating current motor, DP are the alternating current bulbs among the figure, be equivalent to be in series circuit unit in the circuit of Figure 14, the circuit of the symbolic significance of SCR, DW4, R4 and composition and circuit working principle are identical with Fig. 6 circuit among the figure, it is identical that SCR, DW4, R4 and diode D form circuit connecting method and Fig. 2 of exchanging stand-by circuit 6, it is identical with the interchange stand-by circuit 6 of Figure 14 to exchange stand-by circuit 6 courses of work, exchanges 4 ends of stand-by circuit 6, the two ends that 5 end spaies connect institute's parallelled circuit equipment.Series connection heterogeneity equipment in a series circuit, though series circuit current is identical, but not necessarily the voltage of each equipment is identical, therefore, in the interchange stand-by circuit 6 of motor by voltage stabilizing didoe DW4 ' replacement voltage stabilizing didoe DW4, by resistance R 4 ', replace resistance R 4, in the interchange stand-by circuit 6 of bulb, replace resistance R 4 by voltage stabilizing didoe DW4 " replace voltage stabilizing didoe DW4, by resistance R 4 ", adapt to the starting resistor needs that distinct device exchanges reserve 6 circuit, power supply is by city's AC-powered, and Figure 28 operation principle is identical with Figure 14.

Claims (12)

1. form the method for series circuit by circuit unit, it is characterized in that: for the open circuit of the circuit unit in the series circuit is established stand-by circuit.Stand-by circuit has two terminals, and two terminals are connected in parallel on the circuit unit in the series circuit:
Stand-by circuit is established one and is started operating voltage, start operating voltage greater than and near the circuit unit maximum working voltage in the series circuit in parallel, when the stand-by circuit when starting operating voltage of the voltage between the stand-by circuit two ends is in cut-off state, there is not electric current to pass through.When the circuit unit in the series circuit is opened a way, produce one between the stand-by circuit two ends in parallel and keep voltage, this keeps the startup operating voltage that voltage is stand-by circuit, and can pass through certain electric current from stand-by circuit, this electric current is equal to or greater than the maximum operating currenbt of series circuit.When the series circuit operate as normal, the voltage between the stand-by circuit two ends is less than the maximum voltage of the circuit unit in the series circuit, and the stand-by circuit both end voltage does not reach the startup operating voltage, is in cut-off state, does not have electric current to pass through.When only the circuit unit in series circuit is opened a way, be added to the voltage at stand-by circuit two ends in parallel reach the startup operating voltage immediately, stand-by circuit begins to keep this startup operating voltage, make other circuit unit both end voltage value in the series circuit that big variation not take place, and other circuit unit in the series circuit can from stand-by circuit in parallel electric current by required work, guarantee other circuit unit operate as normal in the series circuit.
2. according to claim 1ly forming the method for series circuit by circuit unit, according to the situation of the power supply of the circuit unit needs in the series circuit, for the power supply of the circuit unit in the series circuit can be an alternating current, can be direct current also, it is characterized in that:
Described stand-by circuit be used to circuit unit power supply in the series circuit be alternating current for exchanging stand-by circuit, it is the galvanic direct current stand-by circuit that is that described stand-by circuit is used to the circuit unit power supply in the series circuit;
Direct current stand-by circuit 3 has two terminals, and one is anode 1, and another is a negative terminal 2.The anode 1 of direct current stand-by circuit 3 connect the anode of the circuit unit in the series circuit in parallel, the negative terminal 2 of direct current stand-by circuit 3 connect the negative terminal of the circuit unit in the series circuit in parallel;
Exchanging stand-by circuit 6 constructive methods is: the branch road that is made of a series circuit the negative pole of a diode D of direct current stand-by circuit 3 anodes, 1 connection, the two ends of this branch road are the positive poles of direct current stand-by circuit 3 negative terminals 2 and diode D, two such branch road two ends reverse parallel connections are connected and composed interchange stand-by circuit 6, the link of two parallel connections of two branch roads is terminals 4 and the terminals 5 that exchange stand-by circuit 6, exchanges the terminals 4 of stand-by circuit 6 and terminals 5 and is connected in parallel on the circuit unit in institute's series circuit.
3. form the method for series circuit according to claim 2 is described by circuit unit, it is characterized in that: described direct current stand-by circuit 3 can be an element, also can be the circuit that a plurality of elements are formed, as:
A. form direct current stand-by circuit 3 by element of voltage stabilizing didoe DW1, voltage stabilizing didoe DW1 negative pole is the anode 1 of direct current stand-by circuit 3, and voltage stabilizing didoe DW1 positive pole is the negative terminal 2 of direct current stand-by circuit 3;
B. the direct current stand-by circuit of forming by voltage stabilizing didoe DW2, NPN type triode Ta, resistance R c2, resistance R 23.The collector electrode of triode Ta links to each other with the end of resistance R c2, the base stage of triode Ta links to each other with an end of resistance R 2, resistance R 2 other ends link to each other with the positive pole of voltage stabilizing didoe DW2, the negative pole of voltage stabilizing didoe DW2 links to each other with the other end of resistance R c2 and draws a line, this line is the anode 1 of direct current stand-by circuit 3, and the emitter lead-out wire of triode Ta is the negative terminal 2 of direct current stand-by circuit 3;
C. the direct current stand-by circuit of forming by voltage stabilizing didoe DW3, positive-negative-positive triode Tb, resistance R c3, resistance R 33.The collector electrode of triode Tb links to each other with the end of resistance R c3, the base stage of triode Tb links to each other with an end of resistance R 3, resistance R 3 other ends link to each other with the negative pole of voltage stabilizing didoe DW3, the positive pole of voltage stabilizing didoe DW3 links to each other with the other end of resistance R c3 and draws a line, this line is the negative terminal 2 of direct current stand-by circuit 3, and the emitter lead-out wire of triode Tb is the anode 1 of direct current stand-by circuit 3;
D. the direct current stand-by circuit of forming by voltage stabilizing didoe DW4, controllable silicon SCR, resistance R 43.The anode of controllable silicon SCR links to each other with an end of resistance R 4, the control utmost point of controllable silicon SCR links to each other with the positive pole of voltage stabilizing didoe DW4, the negative pole of voltage stabilizing didoe DW4 links to each other with the other end of resistance R 4 and draws a line, this line is the anode 1 of direct current stand-by circuit 3, and the cathode terminal of controllable silicon SCR is the negative terminal 2 of direct current stand-by circuit 3.
4. the method for forming series circuit by circuit unit according to claim 1, it is characterized in that: alleged circuit unit can be an element or equipment, also can be the series circuit that plural element or equipment are formed, can also be the set that multiple element or equipment combined group become series circuit.As:
A. form circuit unit in the LED series circuit by a LED.Voltage stabilizing didoe DW1 constitutes direct current stand-by circuit 3, voltage stabilizing didoe DW1 negative pole is direct current stand-by circuit 3 anodes 1, connect the positive pole of LED, voltage stabilizing didoe DW1 positive pole is direct current stand-by circuit 3 negative terminals 2, connect the negative pole of LED, make direct current stand-by circuit 3 be connected in parallel on the two ends of LED ,+be dc power anode ,-be dc power cathode;
B. by the circuit unit of forming after three LED series connection in the LED series circuit, three LED series connection back positive poles are anodes of circuit unit, three LED series connection back negative poles are negative terminals of circuit unit, voltage stabilizing didoe DW1 constitutes direct current stand-by circuit 3, voltage stabilizing didoe DW1 negative pole is direct current stand-by circuit 3 anodes 1, anode in the connection circuit unit, voltage stabilizing didoe DW1 positive pole is direct current stand-by circuit 3 negative terminals 2, negative terminal in the connection circuit unit, make direct current stand-by circuit 3 be connected in parallel on the two ends of circuit unit, + be dc power anode ,-be dc power cathode;
C. by the circuit unit of forming after a plurality of LED series connection in the LED series circuit, a plurality of LED series connection back positive pole is the anode of circuit unit, a plurality of LED series connection back negative pole is the negative terminal of circuit unit, voltage stabilizing didoe DW1 constitutes direct current stand-by circuit 3, voltage stabilizing didoe DW1 negative pole is direct current stand-by circuit 3 anodes 1, anode in the connection circuit unit, voltage stabilizing didoe DW1 positive pole is direct current stand-by circuit 3 negative terminals 2, negative terminal in the connection circuit unit, make direct current stand-by circuit 3 be connected in parallel on the two ends of circuit unit, + be dc power anode ,-be dc power cathode;
D. by the circuit unit of forming after the two LED series connection in the LED series circuit, two LED series connection back positive poles are anodes of circuit unit, two LED series connection back negative poles are negative terminals of circuit unit, voltage stabilizing didoe DW1 constitutes direct current stand-by circuit 3, voltage stabilizing didoe DW1 negative pole is direct current stand-by circuit 3 anodes 1, anode in the connection circuit unit, voltage stabilizing didoe DW1 positive pole is direct current stand-by circuit 3 negative terminals 2, negative terminal in the connection circuit unit, make the 3 intersection cross-over connections of direct current stand-by circuit be connected in parallel on the two ends of circuit unit, + be dc power anode ,-be dc power cathode;
E. form circuit unit in the great power LED series circuit by a great power LED.Form direct current stand-by circuit 3 by voltage stabilizing didoe DW2, NPN type triode Ta, resistance R c2, R2.The collector electrode of triode Ta links to each other with the end of resistance R c2, the base stage of triode Ta links to each other with an end of resistance R 2, resistance R 2 other ends link to each other with the positive pole of voltage stabilizing didoe DW2, the negative pole of voltage stabilizing didoe DW2 links to each other with the other end of resistance R c2 and draws a line, this line is the anode 1 of direct current stand-by circuit 3, connect the LED positive pole, the emitter lead-out wire of triode Ta is the negative terminal 2 of direct current stand-by circuit 3.Connect the LED negative pole, make direct current stand-by circuit 3 be connected in parallel on the two ends of LED ,+be dc power anode ,-be dc power cathode;
F. form circuit unit in the great power LED series circuit by a great power LED.Form direct current stand-by circuit 3 by voltage stabilizing didoe DW4, controllable silicon SCR, resistance R 4.The anode of controllable silicon SCR links to each other with an end of resistance R 4, the control utmost point of controllable silicon SCR links to each other with the positive pole of voltage stabilizing didoe DW4, the negative pole of voltage stabilizing didoe DW2 links to each other with the other end of resistance R 4 and draws a line, this line is the anode 1 of direct current stand-by circuit 3, connects the LED positive pole, and the cathode terminal of controllable silicon SCR is the negative terminal 2 of direct current stand-by circuit 3, connect the LED negative pole, make direct current stand-by circuit 3 be connected in parallel on the two ends of LED ,+be dc power anode ,-be dc power cathode;
5. the method for forming series circuit by circuit unit according to claim 1, for it is characterized in that of circuit that requires stable power-supplying and device: the pressure regulation current-limiting circuit is arranged, described pressure regulation current-limiting circuit is except that using the current-limiting resistance current limliting, can also use the collector electrode of current-limiting resistance and triode, current-limiting circuit is transferred in the pressure regulation of forming after the emitter parallel connection, the collector electrode of the two ends of current-limiting resistance and triode wherein, after the parallel connection of emitter two ends two terminals of pressure regulation current-limiting circuit, the pressure regulation current-limiting circuit is connected in the circuit, controls the collector electrode of triode by the base stage of triode, the voltage at emitter two ends.When supply voltage is low, be subjected to the base stage control triode of triode collector electrode, that the emitter two ends produce voltage drop is little, it is also little that the supply voltage part is offset in the voltage drop that the pressure regulation current-limiting circuit is little, guarantee that power supply provides normal working voltage for the circuit unit in the series circuit, thereby normal operating current is provided.When supply voltage is high, it is big to be subjected to collector electrode, the emitter two ends of the base stage control triode of triode to produce voltage drop, the voltage drop counteracting supply voltage raised portion that the pressure regulation current-limiting circuit is big is also big, guarantee that power supply provides normal working voltage for the circuit unit in the series circuit, thereby normal operating current is provided.
6. the method for forming series circuit by circuit unit according to claim 5, it is characterized in that: described pressure regulation current-limiting circuit, except that can using the current-limiting resistance current limliting, can be one-level pressure regulation current-limiting circuit, two-stage pressure-regulating current-limiting circuit or multi-stage pressure regulating current-limiting circuit.As in the multi-stage pressure regulating current-limiting circuit: RL1, RL2, RL3 ... RLn is a current-limiting resistance, current-limiting resistance RL1, RL2, RL3 ... RLn is connected in series successively, 61,62,63,6f is current-limiting resistance RL1 at different levels, RL2, RL3 ... the link of the series connection of RLn, the 61st, the link of the end of current-limiting resistance RL1, the 62nd, the link that the end of the other end of current-limiting resistance RL1 and current-limiting resistance RL2 is in series, the 63rd, the link that the end of the other end of current-limiting resistance RL2 and current-limiting resistance RL3 is in series, 6f is the other end of final stage current-limiting resistance RLn, it is last end of final stage current-limiting resistance, T1, T2, T3 ... Tn is a triode, triode T1, T2, T3 ... the emitter of Tn, collector electrode is connected across current-limiting resistance RL1 at different levels respectively, RL2, RL3 ... the tie point 61 that RLn is in series, 62,63, between 6n and the 6f, b1, b2, b3, bn is respectively triode T1, T2, T3 ... the base stage of Tn, control triode T1, T2, T3 ... Tn carries out the pressure regulation current limliting:
A. in the two-stage pressure-regulating current-limiting circuit: RL1, RL2 is a current-limiting resistance, current-limiting resistance RL1, RL2 is connected in series, the 61st, the end of current-limiting resistance RL1, the 62nd, the link that the end of the other end of current-limiting resistance RL1 and current-limiting resistance RL2 is in series, 6f is the other end of current-limiting resistance RL2, T1, T2, Tc1, Tc2 is a NPN type triode, the emitter of triode all connects together and connects the 6f end, triode T1 collector electrode connects 61 ends, triode T2 collector electrode connects 62 ends, triode T1 base stage b1, triode Tc1 collector electrode terminates at resistance R b10 one, the resistance R b10 other end is connected on the power Vcc, triode T2 base stage b2, triode Tc2 collector electrode terminates at resistance R b20 one, the resistance R b20 other end is connected on the power Vcc, triode Tc1 base stage connects the positive pole of voltage stabilizing didoe DW10, the end of the negative pole connecting resistance Rb11 of voltage stabilizing didoe DW10, one of resistance R b11 terminates on the power Vcc in addition, triode Tc2 base stage connects the positive pole of voltage stabilizing didoe DW20, the end of the negative pole connecting resistance Rb21 of voltage stabilizing didoe DW20, one of resistance R b21 terminates on the power Vcc in addition, and the circuit unit in the series circuit is connected on 61 ends and 6f end respectively;
B. in the two-stage pressure-regulating current-limiting circuit: RL1, RL2 is a current-limiting resistance, current-limiting resistance RL1, RL2 is connected in series, the 61st, the end of current-limiting resistance RL1, the 62nd, the link that the end of the other end of current-limiting resistance RL1 and current-limiting resistance RL2 is in series, 6f is the other end of current-limiting resistance RL2, T1, T2, Tc3, Tc4 is the positive-negative-positive triode, triode T1, the Tc3 emitter connects together and connects 61 ends, triode T2, the Tc4 emitter connects together and connects 62 ends, triode T1, the T2 collector electrode connects together and connects the 6f end, triode T1 base stage b1, triode Tc3 collector electrode terminates at resistance R b30 one, triode T2 base stage b2, triode Tc4 collector electrode terminates at resistance R b40 one, triode Tc3 base stage connects the negative pole of voltage stabilizing didoe DW30, the end of the anodal connecting resistance Rb31 of voltage stabilizing didoe DW30 and the other end of resistance R b30, another termination 6f end of resistance R b31, triode Tc4 base stage connects the negative pole of voltage stabilizing didoe DW40, the end of the anodal connecting resistance Rb41 of voltage stabilizing didoe DW40 and the other end of resistance R b40, another termination 6f end of resistance R b41, the circuit unit in the series circuit are connected on 61 ends or 6f end;
C. in three grades of pressure regulation current-limiting circuits: RL1, RL2, RL3 is a current-limiting resistance, current-limiting resistance RL1, RL2, RL3 is connected in series successively, the 61st, the end of current-limiting resistance RL1, the 62nd, the link that the end of the other end of current-limiting resistance RL1 and current-limiting resistance RL2 is in series, the 63rd, the link that the end of the other end of current-limiting resistance RL2 and current-limiting resistance RL3 is in series, 6f is the other end of current-limiting resistance RL3, T1, T2, T3, Tc5, Tc6, Tc7 is the positive-negative-positive triode, triode T1, the Tc5 emitter connects together and connects 61 ends, triode T2, the Tc6 emitter connects together and connects 62 ends, triode T3, the Tc7 emitter connects together and connects 63 ends, triode T1, T2, the T2 collector electrode connects together and connects the 6f end, triode T1 base stage b1, triode Tc5 collector electrode terminates at resistance R b50 one, triode T2 base stage b2, triode Tc6 collector electrode terminates at resistance R b60 one, triode T3 base stage b3, triode Tc7 collector electrode terminates at resistance R b70 one, the resistance R b50 other end, the resistance R b60 other end, the resistance R b70 other end is connected together and ground
Figure A200710188064C00061
Connect, triode Tc5 base stage terminates at resistance R b51 one, triode Tc6 base stage terminates at resistance R b61 one, triode Tc7 base stage terminates at resistance R b71 one, the other end of resistance R b51 and resistance R 51 1 ends, resistance R 52 1 terminates at together, the other end of resistance R b61 and resistance R 61 1 ends, resistance R 62 1 terminates at together, the other end of resistance R b71 and resistance R 71 1 ends, resistance R 72 1 terminates at together, the other end of resistance R 51, the other end of resistance R 61, the other end and the power Vcc of resistance R 71 are connected together, the other end of resistance R 52, the other end of resistance R 62, the other end of resistance R 72 with ground Connect, the circuit unit in the series circuit is connected on 61 ends and 6f end respectively.
7. according to claim 3, the described device of forming series circuit by circuit unit of claim 4 and claim 5, it is characterized in that forming direct current stand-by circuit 3 by element of voltage stabilizing didoe DW1 in the claim 3, form circuit unit in the series circuit by a LED in the claim 4, form current-limiting circuit with current-limiting resistance RL in the claim 5, formed the LED circuit for lamp: a plurality of LED are cascaded, voltage stabilizing didoe DW1 negative pole is the anode 1 of direct current stand-by circuit 3, connect the LED positive pole, voltage stabilizing didoe DW1 positive pole is the negative terminal 2 of direct current stand-by circuit 3, connect the LED negative pole, make direct current stand-by circuit 3 be connected in parallel on each LED two ends, form the LED series arm that direct current stand-by circuit 3 is arranged, this branch road and current-limiting resistance RL are composed in series the single LED circuit for lamp.A plurality of single LED circuit for lamp compose in parallel the LED multi-path circuit for lamp.U is a DC power supply ,+be positive source ,-be the negative pole of power supply.
8. according to the described device of forming series circuit by circuit unit of claim 3, claim 4 and claim 6, it is characterized in that forming direct current stand-by circuit 3 by element of voltage stabilizing didoe DW1 in the claim 3, form circuit unit in the series circuit by a LED in the claim 4, form the two-stage pressure-regulating current-limiting circuit by positive-negative-positive triode T1, T2, Tc3, Tc4 and current-limiting resistance RL1, RL2 and resistance R b30, Rb40, Rb31, Rb41 and voltage stabilizing didoe DW30, DW40 in the claim 6, these circuit constitute the LED circuit for lamp:
Current-limiting resistance RL1, RL2 is connected in series, the 61st, the end of current-limiting resistance RL1, the 62nd, the link that the end of the other end of current-limiting resistance RL1 and current-limiting resistance RL2 is in series, 6f is the other end of current-limiting resistance RL2, triode T1, the Tc3 emitter connects together and connects 61 ends, triode T2, the Tc4 emitter connects together and connects 62 ends, triode T1, the T2 collector electrode connects together and connects the 6f end, triode T1 base stage b1, triode Tc3 collector electrode terminates at resistance R b30 one, triode T2 base stage b2, triode Tc4 collector electrode terminates at resistance R b40 one, triode Tc3 base stage connects the negative pole of voltage stabilizing didoe DW30, the end of the anodal connecting resistance Rb31 of voltage stabilizing didoe DW30 and the other end of resistance R b30, the other end of resistance R b31 is connected on the 6f end, triode Tc4 base stage connects the negative pole of voltage stabilizing didoe DW40, the end of the anodal connecting resistance Rb41 of voltage stabilizing didoe DW40 and the other end of resistance R b40, the other end of resistance R b41 are connected on the 6f end, constitute the two-stage pressure-regulating current-limiting circuit.The anode of 61 termination powers of pressure regulation current-limiting circuit, the anode after the 6f termination LED series connection of pressure regulation current-limiting circuit, the negativing ending grounding after the LED series connection
Figure A200710188064C00071
End constitutes direct current stand-by circuit 3 by voltage stabilizing didoe DW1, and voltage stabilizing didoe DW1 negative pole is the anode 1 of direct current stand-by circuit 3, connect the LED positive pole, voltage stabilizing didoe DW1 positive pole is the negative terminal 2 of direct current stand-by circuit 3, connects the LED negative pole, makes direct current stand-by circuit 3 be connected in parallel on each LED two ends.Contain polarity pressure regulation current-limiting circuit, voltage stabilizing didoe DW1 form direct current stand-by circuit 3 is arranged, the LED series circuit constitutes a branch road, is called the branch road of LED lamp.The branch road two ends are 61 ends of pressure regulation current-limiting circuit and the ground of LED series circuit
Figure A200710188064C00081
End composes in parallel the LED multi-path lamp to the branch road of a plurality of such LED lamps.Four rectifier diode Dz are arranged, and wherein the negative pole of two rectifier diode Dz links to each other and connects pressure regulation current-limiting circuit 61 ends, and the positive pole of other two rectifier diode Dz links to each other and ground connection
Figure A200710188064C00082
The end, the other end of the rectifier diode Dz that links to each other with 61 ends and with The other end of a rectifier diode Dz of linking to each other connects together and constitutes an end A of alternating current input, the other end of the another rectifier diode Dz that is connected with 61 ends and with The be connected other end of another rectifier diode Dz of end connects together and constitutes the other end B of alternating current input, like this, has formed bridge rectifier by four rectifier diode Dz, and city's alternating current connects A end, the B end of bridge rectifier.The bridge rectifier of forming by four rectifier diode Dz, it only is the branch road power supply of a LED lamp, composition for the branch road by a plurality of LED lamps composes in parallel the power supply of LED multi-path lamp, is formed the device by city's AC-powered LED multi-path circuit for lamp by the device of city's AC-powered single LED circuit for lamp.Owing to adopt the two poles of the earth pressure regulation current-limiting circuit, the working range of city's alternating current can be+10%---change between-10%.
9. according to the described device of forming series circuit by circuit unit of claim 3, claim 4 and claim 6, it is characterized in that constituting direct current stand-by circuit 3 by element of voltage stabilizing didoe DW1 in the claim 3, constitute the circuit unit of series circuit in the claim 4 by a LED, form one-level pressure regulation current-limiting circuit by current-limiting resistance RL1 and resistance R b30, Rb31 and NPN type triode T1, Tc3 and voltage stabilizing didoe DW30 in the claim 6, these circuit constitute the LED circuit for lamp:
The 61st, the end of current-limiting resistance RL1,6f is the other end of current-limiting resistance RL1, triode T1, the Tc3 emitter connects together and connects 61 ends, triode T1 collector electrode connects the 6f end, triode T1 base stage b1, triode Tc3 collector electrode terminates at resistance R b30 one, triode Tc3 base stage connects the negative pole of voltage stabilizing didoe DW30, the end of the anodal connecting resistance Rb31 of voltage stabilizing didoe DW30 and the other end of resistance R b30, one of resistance R b31 terminates at the 6f end in addition, a plurality of LED are together in series, by voltage stabilizing didoe DW1 negative pole is the anode 1 of direct current stand-by circuit 3, connect the LED positive pole, voltage stabilizing didoe DW1 positive pole is the negative terminal 2 of direct current stand-by circuit 3, connect the LED negative pole, make direct current stand-by circuit 3 be connected in parallel on each LED two ends, form the LED series circuit that direct current stand-by circuit 3 is arranged, this series circuit anode links to each other with the 6f end of pressure regulation current-limiting circuit, form the branch road that contains single-stage pressure regulation current-limiting circuit and LED series circuit, the branch road two ends are 61 ends of pressure regulation current-limiting circuit and the negative terminal of LED series circuit.The negative pole of rectifier diode Dz connects pressure regulation current-limiting circuit 61 ends, and the positive pole of rectifier diode Dz is an end A of alternating current input, and B is the other end of alternating current input, connects the negative terminal of LED series circuit.Like this, Dz constitutes half-wave rectifying circuit by rectifier diode, and city's alternating current is held this circuit supply by A end, B.Constitute the electric LED cluster of lamps, ornamental of city's alternating current confession.
10. the device of forming series circuit by circuit unit according to claim 2, it is characterized in that: the circuit unit in the described series circuit is alternating current bulb DP, the collector electrode of triode Ta links to each other with the end of resistance R c2, the base stage of triode Ta links to each other with an end of resistance R 2, resistance R 2 other ends link to each other with the positive pole of voltage stabilizing didoe DW2, the negative pole of voltage stabilizing didoe DW2 links to each other with the other end of resistance R c2 and connects the negative pole of diode D, like this, draw an end by triode Ta emitter, draw the other end by diode D positive pole again, circuit between these two ends constitutes a subcircuits, the two ends reverse parallel connection of two such subcircuits connected to form exchange stand-by circuit 6, it a little is two end points 4 and 5 of interchange stand-by circuit 6 that two in circuit is connected in parallel.Be connected in two end points 4 and 5 of direct current stand-by circuit 6 in parallel each bulb DP two ends, directly to the power supply of series electrical bulb DP circuit two ends, formed the lighting device of a plurality of alternating current bulb DP series connection by city's alternating current.
11. the device of forming series circuit by circuit unit according to claim 2, it is characterized in that: the circuit unit in the described series circuit is magneto bell DL, the collector electrode of triode Tb links to each other with the end of resistance R c3, the base stage of triode Tb links to each other with an end of resistance R 3, resistance R 3 other ends link to each other with the negative pole of voltage stabilizing didoe DW3, the positive pole of voltage stabilizing didoe DW3 links to each other with the other end of resistance R c3 and connects the positive pole of diode D, like this, draw an end by triode Tb emitter, draw the other end by diode D negative pole again, circuit between these two ends constitutes a subcircuits, the two ends reverse parallel connection of two such subcircuits connected to form exchange stand-by circuit 6, it a little is two end points 4 and 5 of interchange stand-by circuit 6 that two in circuit is connected in parallel.Be connected in two end points 4 and 5 of direct current stand-by circuit 6 in parallel each electric bell DL two ends, directly to the two ends power supply of series connection electric bell DL circuit, formed the magneto bell DL device of a plurality of magneto bell DL series connection by city's alternating current.
12. the device of forming series circuit by circuit unit according to claim 2, it is characterized in that: the circuit unit in the described series circuit is magneto bell DL, alternating current motor MD, equipment such as alternating current bulb DP, the anode of controllable silicon SCR links to each other with an end of resistance R 4, the control utmost point of controllable silicon SCR links to each other with the positive pole of voltage stabilizing didoe DW4, the negative pole of voltage stabilizing didoe DW2 links to each other with the other end of resistance R 4 and connects the negative pole of diode D, like this, the negative electrode of controllable silicon SCR is drawn an end, draw the other end by diode D positive pole again, circuit between these two ends constitutes a subcircuits, the two ends reverse parallel connection of two such subcircuits connected to form exchange stand-by circuit 6, it a little is two end points 4 and 5 of interchange stand-by circuit 6 that two in circuit is connected in parallel.Two end points 4 and the 5 circuit unit two ends that are connected in parallel in the series circuit with direct current stand-by circuit 6.In a series circuit, because the circuit unit in the series circuit is a heterogeneity equipment, though series circuit current is identical, but the voltage of each equipment is not necessarily identical, therefore, in the interchange stand-by circuit 6 of motor by voltage stabilizing didoe DW4 ' replacement voltage stabilizing didoe DW4, by resistance R 4 ' replacement resistance R 4, in the interchange stand-by circuit 6 of bulb, " replace voltage stabilizing didoe DW4; by resistance R 4 and " replace resistance R 4 by voltage stabilizing didoe DW4, adapt to the starting resistor needs of the interchange stand-by circuit 6 of distinct device, directly the series circuit two ends are powered by city's alternating current.Constituted device by devices in series such as magneto bell DL, alternating current motor MD, alternating current bulb DP.
CN2007101880649A 2007-11-23 2007-11-23 Method and apparatus for setting back-up circuit for series circuit open circuit, and device current-limiting circuit Expired - Fee Related CN101442852B (en)

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CN101936562A (en) * 2009-06-30 2011-01-05 樱花卫厨（中国）股份有限公司 LED indicating circuit used together with mechanical switch for range hood
CN102032539A (en) * 2010-10-28 2011-04-27 映瑞光电科技(上海)有限公司 Lighting circuit
CN102510613A (en) * 2011-10-24 2012-06-20 宁波市佰仕电器有限公司 Alternating current LED (Light Emitting Diode) driving circuit
CN102812247A (en) * 2010-01-11 2012-12-05 英瑞杰汽车系统研究公司 Method for regulating a pump of an scr system
CN103561499A (en) * 2013-10-23 2014-02-05 浙江耀恒光电科技有限公司 Low power consumption stand-by circuit of tandem type LED circuit
CN111336212A (en) * 2018-12-19 2020-06-26 财团法人金属工业研究发展中心 Suspension system

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CN1574590A (en) * 2003-05-23 2005-02-02 罗姆股份有限公司 Dc-ac converter, and method for supplying AC power

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CN1302113A (en) * 1999-12-27 2001-07-04 三垦电气株式会社 DC-AC exchanger
CN1574590A (en) * 2003-05-23 2005-02-02 罗姆股份有限公司 Dc-ac converter, and method for supplying AC power

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101936562A (en) * 2009-06-30 2011-01-05 樱花卫厨（中国）股份有限公司 LED indicating circuit used together with mechanical switch for range hood
CN101936562B (en) * 2009-06-30 2013-07-31 樱花卫厨（中国）股份有限公司 LED indicating circuit used together with mechanical switch for range hood
CN102812247A (en) * 2010-01-11 2012-12-05 英瑞杰汽车系统研究公司 Method for regulating a pump of an scr system
CN102812247B (en) * 2010-01-11 2015-07-29 英瑞杰汽车系统研究公司 For regulating the method for the pump of SCR system
CN102032539A (en) * 2010-10-28 2011-04-27 映瑞光电科技(上海)有限公司 Lighting circuit
CN102032539B (en) * 2010-10-28 2012-11-21 映瑞光电科技(上海)有限公司 Lighting circuit
US9345086B2 (en) 2010-10-28 2016-05-17 Enraytek Optoelectronics Co., Ltd. Lighting circuit
CN102510613A (en) * 2011-10-24 2012-06-20 宁波市佰仕电器有限公司 Alternating current LED (Light Emitting Diode) driving circuit
CN103561499A (en) * 2013-10-23 2014-02-05 浙江耀恒光电科技有限公司 Low power consumption stand-by circuit of tandem type LED circuit
CN111336212A (en) * 2018-12-19 2020-06-26 财团法人金属工业研究发展中心 Suspension system

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