CN102083248A - Electronic device - Google Patents
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- CN102083248A CN102083248A CN2009102465125A CN200910246512A CN102083248A CN 102083248 A CN102083248 A CN 102083248A CN 2009102465125 A CN2009102465125 A CN 2009102465125A CN 200910246512 A CN200910246512 A CN 200910246512A CN 102083248 A CN102083248 A CN 102083248A
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Abstract
The invention provides an electronic device, which comprises a plurality of load units, a plurality of serial-parallel switching units, and a control module. The control module is used for switching the serial-parallel switching units to a first state or a second state according to the level change of an input voltage. In addition, the coupling relation among the load units varies in accordance with the level change of the input voltage correspondingly. Therefore, the electronic device of the invention can be driven by an AC voltage.
Description
Technical field
The present invention relates to a kind of electronic installation, and be particularly related to a kind of electronic installation that carries out the switching of load unit according to input voltage.
Background technology
That light-emitting diode (Light Emitting Diode, be called for short LED) has is long such as the life-span, volume is little, high shock resistance, low-heat produces and advantage such as low power consumption, therefore has been widely used in indicating device or light source in family expenses and the various device.In recent years, light-emitting diode is towards multicolour and high brightness development, so its application has extended to large-scale billboards, traffic signal light and association area.In future, light-emitting diode even may become the main lighting source that has power saving and environment-friendly function concurrently.
In general, the control circuit of light-emitting diode all is alternating voltage to be converted elder generation to direct voltage or electric current mostly, utilizes galvanic current pressure or electric current to control the light-source brightness of light-emitting diode afterwards again.In other words, the control circuit of existing light-emitting diode is an embedded AC/DC converter (AC-DC converter) mostly, or the transformer of must arranging in pairs or groups, and could be controlled by the civil power that exchanges.Yet this kind situation not only can increase the hardware volume of the control circuit of light-emitting diode, and the also convenience of limit light-emitting diode on using.
Summary of the invention
The invention provides a kind of electronic installation, need not an embedded AC/DC converter, also need not the transformer of arranging in pairs or groups, just can come the control load unit by the civil power that exchanges.
The invention provides a kind of electronic installation, have microminiaturized advantage, and can increase user's convenience.
The present invention proposes a kind of electronic installation, comprises N load unit, (N-1) individual string and a switch unit and a control die set, and N is the integer greater than 1.These load units have one first end and one second end separately, and wherein first end of the 1st load unit is in order to receive an input voltage, and second end of N load unit is coupled to an earth terminal.
In addition, these strings and switch unit have one first end to the 4th end separately, wherein first end of each string and switch unit is in order to receive input voltage, i the string and second end of switch unit are coupled to second end of i load unit, i string and the 3rd end of switch unit are coupled to first end of (i+1) individual load unit, and each string and the 4th end of switch unit are coupled to earth terminal, and i is integer and 1≤i≤(N-1).
Moreover control die set changes in order to the accurate position of foundation input voltage, and these strings and switch unit are switched to one first state or one second state.Wherein, these strings and switch unit under first state, its first end of conducting and the 3rd end, and its second end of conducting and the 4th end, and these go here and there also switch unit under second state, its first end of not conducting and the 4th end, and its second end of conducting and the 3rd end.
The present invention proposes a kind of electronic installation in addition, comprises N first load unit, (N-1) individual first string and switch unit, one second string and a switch unit and a control die set, and N is the integer greater than 1.These first load units have one first end and one second end separately, and first end of the 1st first load unit is in order to receive an input voltage.
In addition, these first strings and switch unit have one first end to the 4th end separately, wherein first end of these first strings and switch unit all is coupled to first end of the 1st first load unit, second end of individual first string of i and switch unit is coupled to second end of i first load unit, the 3rd end of individual first string of i and switch unit is coupled to first end of (i+1) individual first load unit, and these first strings and the 4th end of switch unit are coupled to second end of N first load unit, and i is integer and 1≤i≤(N-1).
Moreover second string and switch unit have one first end to the 4th end.Wherein, first end of second string and switch unit is in order to receive input voltage, and second end of second string and switch unit is coupled to second end of N first load unit, and the 4th end of second string and switch unit is coupled to an earth terminal.Control die set changes in order to the accurate position of foundation input voltage, and with these first strings and switch unit and second string also switch unit switch to one first state or one second state.Wherein, these first strings and switch unit and second string and switch unit are under first state, its first end of conducting and the 3rd end, and its second end of conducting and the 4th end, and these first strings and switch unit and second string and switch unit are under second state, its first end of not conducting and the 4th end, and its second end of conducting and the 3rd end.
Based on above-mentioned, the present invention is that the accurate position according to input voltage changes the state that switches string and switch unit, produces corresponding the variation with the connection status that causes load unit along with the accurate position of input voltage.By this, electronic installation of the present invention need not an embedded AC/DC converter, also need not the transformer of arranging in pairs or groups, and just can come the control load unit by the civil power that exchanges.Relatively, with prior art in comparison, electronic installation of the present invention has microminiaturized advantage, and can increase user's convenience.
For above-mentioned feature and advantage of the present invention can be become apparent, embodiment cited below particularly, and cooperate appended graphic being described in detail below.
Description of drawings
Fig. 1 is the circuit diagram according to the lighting device of one embodiment of the invention;
Fig. 2 is the circuit box schematic diagram according to the flow-dividing control unit of one embodiment of the invention;
Fig. 3 is the circuit diagram according to the voltage control unit of one embodiment of the invention;
Fig. 4 is according to the string of one embodiment of the invention and the circuit diagram of switch unit;
Fig. 5 is according to the string of another embodiment of the present invention and the circuit diagram of switch unit;
Fig. 6 is the circuit diagram according to the electronic installation of another embodiment of the present invention;
Fig. 7 A to Fig. 7 D is the circuit diagram in order to the annexation of the load unit of key diagram 6;
Fig. 8 is the circuit diagram according to the electronic installation of further embodiment of this invention;
Fig. 9 A to Fig. 9 C is the circuit diagram in order to the annexation of the load unit of key diagram 8;
Figure 10 shows that circuit diagram according to the electronic installation of yet another embodiment of the invention.
The main element symbol description
100,600,800,1000: electronics adorns 110: rectification unit;
Put;
101～105,611～616,811～121～125: LED serial;
814、1100_1～1100_n、
1200_1～1200_n: load unit;
LED1～LED4: light-emitting diode; 131～135: the flow-dividing control unit;
141～144,621～625,821～150,630,830,1700: the control mould
823,801,1300_1～1300_m, group;
1400、1500_1～1500_m、1600：
String and switch unit;
161～164: string and control unit; 170: pressure unit;
180: voltage control unit; TM11～TM14: string and switch unit
End points;
PT1～PT4: shunt paths; AC: alternating voltage;
VIN: input voltage; V1～V3: node voltage;
VS: supply voltage; 210: voltage-sensor;
220: reference current generator; 230: current controller;
241～244: current regulator; TM21, TM22: load unit 101
Two-end-point;
S
EV: the sensing voltage variable signal; I
EEP: reference current signal;
I
21～I
24: sensed current signal; S
21～S
24: the flow-dividing control signal;
410: the first control of Electric potentials unit; 420: the second control of Electric potentials unit;
R1, R2, R31～R33, R4～R7:MN1, MN21～MN23, MN3:N type
Resistance; Transistor;
MP1, MP2:P transistor npn npn; ZD1～ZD3: Zener diode;
C1, C81: electric capacity; S41: switching signal.
Embodiment
Fig. 1 is the circuit diagram according to the electronic installation of one embodiment of the invention.With reference to Fig. 1, electronic installation 100 comprises a rectification unit 110, a N load unit 101～105, (N-1) individual string and switch unit 141～144 and a control die set 150, and N is the integer greater than 1.Wherein, control die set 150 comprises (N-1) individual string and a control unit 161～164 and a pressure unit 170.It should be noted that, electronic installation 100 is a lighting device, mainly be to utilize load unit 101～105 to produce light source, therefore on the entity framework, load unit 101～105 comprises a LED serial and a flow-dividing control unit separately, for example: LED serial 121～125 and N flow-dividing control unit 131～135, and electronic installation 100 also comprises a voltage control unit 180, with the required power supply in flow-dividing control unit in the supply load unit 101～105 131～135.
Please continue with reference to Fig. 1, rectification unit 110 is in order to carry out rectification to an alternating voltage AC, for example: full-wave rectification.By this, rectification unit 110 will be exported an input voltage VIN and give LED serial 121.Load unit 101 has one first end and one second end, and comprises LED serial 121 and flow-dividing control unit 131.LED serial 121 is in order to receive the voltage from first end of load unit 101.In addition, LED serial 121 comprises M LED 1～LED4, and LED 1～LED4 is connected in series mutually, and wherein M is the integer greater than 1.Flow-dividing control unit 131 couples second end of LED serial 121 and load unit 101.In integrated operation, input voltage VIN can be detected over time in flow-dividing control unit 131, to obtain a detecting result.
In addition, flow-dividing control unit 131 is in order to provide M the shunt paths PT1～PT4 of LED 1～LED4 difference conducting to second end of load unit 101.By this, flow-dividing control unit 131 will be since the 1st shunt paths PT1 conducting shunt paths one by one PT1～PT4 when input voltage VIN rises in time, and closes shunt paths PT1～PT4 one by one since M shunt paths PT4 when input voltage VIN descends in time.Thus, in the process that input voltage VIN rises in time, LED 1～LED4 will be switched on one by one, and its electric current will be maintained at about a target current.Relatively, in the process that input voltage VIN descends in time, LED 1～LED4 will be closed one by one, still be maintained at about target current to cause its electric current.
Similarly, LED serial 122～125 has the circuit framework identical with LED serial 121 separately.That is to say that LED serial 122～125 respectively has M light-emitting diode of series connection.On the other hand, flow-dividing control unit 132～135 has the circuit framework identical with flow-dividing control unit 131 separately.Therefore, flow-dividing control unit 132 also can be controlled the electric current of each light-emitting diode in the LED serial 122 by M shunt paths.Similarly, flow-dividing control unit 133 also can be controlled the electric current of each light-emitting diode in the LED serial 123 by M shunt paths.By that analogy, the operation mechanism of flow-dividing control unit 134～135.
In practical application, LED serial 121～125 can have the light-emitting diode of different numbers individually.For example, when LED serial 121 is to be connected in series mutually by a plurality of blue LEDs to form, and LED serial 122 is when serial connection forms mutually by a plurality of red light emitting diodes, the number N UM1 of the light-emitting diode that is connected in series of LED serial 121 then, the number N UM2 that can be less than the light-emitting diode that LED serial 122 is connected in series, for example: NUM1=2/3NUM2.By this, LED serial 121 and 122 cross-pressure (or optimum operating voltage) can be comparatively approaching.In addition, when utilization, the light-emitting diode in the LED serial 121～125 can a plurality of light-emitting diodes be controlled unit also, and promptly LED 1～LED4 all can be series, parallel or its combination of a plurality of light-emitting diodes separately.
It should be noted that electronic installation 100 also comes switch load unit 101～105 annexation each other by string and switch unit 141～144.By this, electronic installation 100 falls voltage at each LED serial 121-125 with adjustable seamless, so that the input voltage VIN after the rectification is under the variation of big scope, LED serial 121～125 still can remain on the most effective operating voltage and current margin.
For instance, string and switch unit 141～144 comprise one first end to the 4th end TM11～TM14 separately.Wherein, the first end TM11 of string and switch unit 141～144 is all in order to the reception input voltage VIN, and the 4th end TM14 of string and switch unit 141～144 all is coupled to earth terminal.In addition, second end of string and switch unit 141 is coupled to second end of load unit 101.The 3rd end of string and switch unit 141 is coupled to first end of load unit 102.Moreover second end of string and switch unit 142 is coupled to second end of load unit 102.The 3rd end of string and switch unit 142 is coupled to first end of load unit 103.By that analogy, the relation that couples of string and switch unit 143～144 and load unit 103～105.
In integrated operation, when string and switch unit 141 when maintaining one first state, string and switch unit 141 are with its first end TM11 of conducting and the 3rd end TM13, and its second end TM12 of conducting and the 4th end TM14.By this, load unit 101 will be parallel to load unit 102.Relatively, when string and switch unit 141 when maintaining one second state, string and switch unit 141 are with its first end TM11 of not conducting and the 4th end TM14, and its second end TM12 of conducting and the 3rd end TM13.By this, load unit 101 will be series at load unit 102.On the other hand, string and switch unit 142～144 have and the string identical circuit framework of switch unit 141 also separately, so the annexation between the controllable load unit 102～105.
On the other hand, electronic installation 100 is to utilize the pressure unit 170 in the control die set 150 to control the also state of switch unit 141～144 of string with string and control unit 161～164.At this, pressure unit 170 is in order to carrying out step-down to input voltage VIN, and with reference to the input voltage VIN after the step-down, and produce corresponding a plurality of triggering signal.Relatively, string and 161～164 of control units are according to described a plurality of triggering signals, control the state of string and switch unit 141～144, switch to first state or second state to cause string and switch unit 141～144.
In practical application, the initial condition of string and switch unit 141～144 is to maintain first state, to cause load unit 101～105 parallel with one another.In other words, input voltage VIN in the process that rises gradually, at the beginning, LED serial 121～125th, parallel with one another.At this moment, pressure drop is all identical at the voltage of each LED serial 121～125, and the electric current of flow-dividing control unit 131～135 meeting adjustment LED serials 121～125, and then causes each LED serial 121～125 that stable light source is provided.Yet, when input voltage VIN rises to a certain magnitude of voltage, enter inefficient operation interval for avoiding pressure drop to cause the voltage of LED serial 121～125 to exceed preset value at the overtension of each LED serial 121～125, this moment, electronic installation 100 can switch the annexation of LED serial 121～125 by string and switch unit 141～144.
For instance, if with N=4 is that example describes, just electronic installation 100 comprises that at the beginning, pressure unit 170 can not produce triggering signal under the situation of 101～104,3 of 4 load units string and switch unit 141～143 and 3 strings and control unit 161～163.At this moment, string and switch unit 141～144 maintain first state, and then cause LED serial 121～124 parallel with one another.
Yet when input voltage VIN rose to a certain magnitude of voltage, pressure unit 170 can meet one first predeterminated voltage in the input voltage VIN after the step-down and (for example: 40 volts under) the situation, export one first triggering signal.At this moment, string and control unit 161 and 163 are with reference to first triggering signal, and will going here and there also, switch unit 141 and 143 switches to second state from first state.By this, LED serial 121 and 122 will be concatenated into one mutually and link tandem, and LED serial 123 and 124 will be concatenated into another binding tandem mutually.In addition, LED serial 122 and 123 will maintain under the state in parallel, and just described binding tandem is parallel with one another.Along with LED serial 121 and 122 be connected in series and LED serial 123 and 124 be connected in series, pressure drop will reduce at the voltage of LED serial 121～124, and then the light-emitting diode number that causes lighting in LED serial 121 and 122 reduces.
Relatively, when input voltage VIN continued to rise to another magnitude of voltage, pressure unit 170 can meet one second predeterminated voltage in the input voltage VIN after the step-down and (for example: 80 volts under) the situation, export one second triggering signal.At this moment, string and control unit 162 be with reference to second triggering signal, will go here and there and switch unit 142 switches to second state from first state, and will go here and there also that control unit 161 and 163 maintains the triggering state.By this, string and switch unit 141～143 all are maintained at second state, and then cause LED serial 121～124 to be connected in series mutually.
In other words, integrated operation mechanism with regard to electronic installation 100, along with input voltage VIN constantly rises, LED serial 121～125 is parallel with one another at the beginning, to be connected in series mutually be one to link tandem to per two tandems in the LED serial 121～125 afterwards, links between the tandem and then keep parallel with one another.Then, when input voltage VIN continued to rise to another magnitude of voltage, it was a binding tandem that per three tandems in the LED serial 121～125 will be connected in series mutually, and will keep parallel with one another between the binding tandem.By that analogy, along with the rising that input voltage VIN continues, linking the LED serial that is connected in series in the tandem will get more and more, and binding tandem parallel with one another is with fewer and feweri, till LED serial 121～125 is connected mutually.
Relatively, in the process that input voltage VIN descends in time, LED serial 121～125 is connected mutually at the beginning, and LED serial 121～125 is divided into 2 binding tandems parallel with one another afterwards.Then, when input voltage VIN continues to drop to another magnitude of voltage, LED serial 121～125 will be divided into 3 binding tandems parallel with one another.By that analogy, along with the decline that input voltage VIN continues, binding tandem parallel with one another will get more and more, and link the LED serial that is connected in series in the tandem with fewer and feweri, till LED serial 121～125 is parallel with one another.
Thus, along with the constantly change of accurate position of alternating voltage AC, electronic installation 100 can be adjusted the serial connection number of LED serial 121～125 earlier by string and switch unit 141～144, with the electric current of each LED serial 121～125 of first coarse adjustment.Afterwards, electronic installation 100 also passes through the electric current of each light-emitting diode in flow-dividing control unit 131～135 fine tuning LED serials 121～125.By this, LED serial 121～125 can be kept stable light source under the driving of alternating voltage AC.Relatively, electronic installation 100 need not an embedded AC/DC converter, also need not the transformer of arranging in pairs or groups, and just can control LED serial 121～125 by the civil power that exchanges, so have the convenience that microminiaturized advantage has also also increased the user.
It should be noted that electronic installation 100 is not having under the situation of embedded AC/DC converter, it is to drive its inner circuit by acquisition LED serial 121～125 formed a plurality of node voltages.For instance, electronic installation 100 is gone back voltage control unit 180, and voltage control unit 180 is coupled to flow-dividing control unit 131～135.Wherein, voltage control unit 180 utilizes input voltage VIN to form a reference voltage, and acquisition LED serial 121～125 formed a plurality of node voltages, for example: the node voltage V1～V3 in the LED serial 121 between LED 1～LED4.By this, voltage control unit 180 will choose one as a supply voltage VS from the part node voltage greater than reference voltage, and will utilize supply voltage VS to drive corresponding flow-dividing control unit 131～135.Thus, can reduce the power consumption of electronic installation effectively.
Usually know that in order to cause this area to have the knowledgeable can understand present embodiment more, below will do further explanation at the internal circuit framework of flow-dividing control unit 131, string and switch unit 141 and voltage control unit 180.
Fig. 2 is that wherein Fig. 2 also illustrates LED serial 121 according to the circuit box schematic diagram of the flow-dividing control unit of one embodiment of the invention, and indicates the two-end-point TM21 and the TM22 of load unit 101.With reference to Fig. 2, flow-dividing control unit 131 comprises a voltage-sensor 210, a reference current generator 220, a current controller 230 and M current regulator 241～244.On overall architecture, current regulator 241～244 is coupled to the LED 1～LED4 in the LED serial 121, so that the shunt paths PT1～PT4 of LED 1～LED4 conducting to the second end TM22 of load unit 101 to be provided.230 of current controllers couple voltage-sensor 210, reference current generator 220 and current regulator 241～244.
In the integrated operation, voltage-sensor 210 and produces a corresponding sensing voltage variable signal S in order to the sensing input voltage VIN over time
EVReference current generator 220 is in order to produce reference current signal I
REF Current regulator 241 is in order to the electric current of detecting by shunt paths PT1, i.e. LED 1 in the LED serial 121 and the difference between current of LED2.Same principle, current regulator 242～244 are detected the electric current by shunt paths PT2～PT4 respectively.Current regulator 241～244 also produces corresponding sensing current signal I
21～I
24To current controller 230.Wherein, sensed current signal I
21～I
24Be convertible into corresponding analog voltage or the numerical digit signal just offers current controller 230.
At this moment, current controller 230 can be by the sensed current signal I that adds up
21～I
24And obtain the electric current of LED 1, and by the sensed current signal I that adds up
22～I
24And obtain the electric current of LED 2.By that analogy, current controller 230 can pass through sensed current signal I
21～I
24And obtain the electric current information of LED 1～LED4.In addition, current controller 230 can be with reference current signal I
REFBe multiplied by a default multiplying power, to produce a target current signal.By this, current controller 230 can be with target current signal and sensed current signal I
21～I
24Compare, and by flow-dividing control signal S
21～S
24To be limited in below the target current of setting by the electric current of shunt paths PT1～PT4.It should be noted that the controlling of the electric current of restriction shunt paths PT1～PT4, but the sensing voltage variable signal S that current controller 230 reference voltage sensors 210 are produced
EV, come to control more accurately shunt paths PT1～PT4.But it is not in order to restriction the present invention, and this area has knows that usually the knowledgeable can be according to design, and the configuration of deciding reference voltage sensor 210 in its sole discretion whether.
Thin portion operation with regard to shunt paths PT1～PT4, when input voltage VIN rises by minimum point is past, when being high enough to light LED 1 but being not enough to light LED 2 simultaneously, by the electric current of shunt paths PT1, meeting is edged up by " 0 " and is parked in target current.When rising to, input voltage VIN is enough to light LED 1 but when being not enough to light LED 3 simultaneously with LED2, by the electric current of shunt paths PT2, and can be by " 0 " gradually toward rising.When current controller 230 detects current signal I
22The time, can pass through control signal S
21Adjust electric current, so that the electric current by LED 1 maintains near the target current by shunt paths PT1.At this moment, the electric current by LED 1 is equal to, and the current summation by shunt paths PT1 is in the electric current by shunt paths PT2.
Fig. 3 is the circuit diagram according to the voltage control unit of one embodiment of the invention.Please refer to Fig. 3, voltage control unit 180 comprises resistance R 1 and R2, resistance R 31～R33, a Zener diode ZD1, N transistor npn npn MN1 and MN21～MN23, diode D1 and a D21～D24 and a capacitor C 1.Wherein, suppose that voltage control unit 180 is to produce supply voltage VS by acquisition LED serial 121 formed node voltage V1～V3, wherein V1＜V2＜V3.
Please continue with reference to Fig. 3, first end of resistance R 1 and R2 is in order to receive input voltage VIN.The cathode terminal of Zener diode ZD1 is coupled to second end of resistance R 1, and its anode tap is coupled to earth terminal.First end of N transistor npn npn MN1 is coupled to second end of resistance R 2, and its control end is coupled to the cathode terminal of Zener diode ZD1.The anode tap of diode D1 is coupled to second end of N transistor npn npn MN1, and its cathode terminal is in order to produce supply voltage VS.First end of capacitor C 1 is coupled to the cathode terminal of diode D1, and its second end is coupled to earth terminal.
On the other hand, the anode tap of diode D21～D23 is respectively in order to receiving node voltage V1～V3, and first end of resistance R 31～R33 is coupled to the cathode terminal of diode D21～D23 respectively.In addition, first end of N transistor npn npn MN21 is coupled to second end of resistance R 31, and its control end is coupled to the cathode terminal of Zener diode ZD1, and its second end is coupled to first end of capacitor C 1.First end of N transistor npn npn MN22 is coupled to second end of resistance R 32, and its control end is coupled to the cathode terminal of Zener diode ZD1, and its second end is coupled to first end of capacitor C 1.First end of N transistor npn npn MN23 is coupled to second end of resistance R 33, and its control end is coupled to the cathode terminal of Zener diode ZD1, and its second end is coupled to first end of capacitor C 1.
In integrated operation, voltage control unit 180 can maintain a specific voltage (for example: 5.7 volts) with the voltage of the control end of N transistor npn npn MN21～MN23 by resistance R 1 and Zener diode ZD1.By this, resistance R 2, N transistor npn npn NM1, diode D1 and capacitor C 1 formed current circuit can be very low in input voltage VIN, and when N transistor npn npn MN21～MN23 is not enough to that effectively power supply is set up supply voltage VS to C1, set up preliminary supply voltage VS with a reference voltage immediately, and then use for flow-dividing control unit 131～135.Because diode D1 can provide 0.6～0.7 volt pressure reduction, so the relatively poor supply path of energy efficiency can turn-off in any one starting back, path of N transistor npn npn MN21～MN23.
In addition, it should be noted that in voltage control unit 180 that the size of the layout area of N transistor npn npn MN21～MN23 is to successively decrease in regular turn, and the resistance size of resistance R 31～R33 is to increase progressively in regular turn.Therefore, as node voltage V1～V3 all under the situation greater than reference voltage, diode D21, resistance R 31 and the formed current circuit of N transistor npn npn NM21 will become topmost power supply source.And know that the size of the accurate position of node voltage V1～V3 is to increase progressively in regular turn, V1＜V2＜V3 just, therefore, it is that minimum node voltage V1 is as supply voltage VS that voltage control unit 180 can be selected accurate position earlier.In other words, under the situation that input voltage VIN and node voltage V1～V3 all change, voltage control unit 180 can be picked out the most approaching from node voltage V1～V3 and originate the path power supply of promptly consuming energy minimum greater than the voltage of reference voltage as the power supply of supply voltage VS.
Fig. 4 is according to the string of one embodiment of the invention and the circuit diagram of switch unit.Please refer to Fig. 4, string and switch unit 141 comprise a P transistor npn npn MP1, a diode D3, a N transistor npn npn MN3, one first control of Electric potentials unit 410 and one second control of Electric potentials unit 420.Wherein, the first control of Electric potentials unit 410 comprises resistance R 4 and R5, a Zener diode ZD2 and a P transistor npn npn MP2.The second control of Electric potentials unit 420 comprises resistance R 6 and R7, a Zener diode ZD3 and a N transistor npn npn MN4.Wherein, string and switch unit 141 are controlled by string and the switching signal S41 that produced of control unit 161.
As shown in Figure 4, first end of resistance R 4 is coupled to the first end TM11 of string and switch unit 141.Zener diode ZD2 and resistance R 4 are parallel with one another, in order to protection P transistor npn npn MP2.First end of resistance R 5 is coupled to first end of resistance R 4.First end of P transistor npn npn MP2 is coupled to second end of resistance R 5, and the control end of P transistor npn npn MP2 is coupled to second end of resistance R 4, and in order to receive the switching signal S41 from string and control unit 161.On the other hand, first end of resistance R 6 is coupled to second end of P transistor npn npn MP2, and its second end is coupled to the 4th end TM14 of string and switch unit 141.Zener diode ZD3 and resistance R 6 are parallel with one another, in order to protection N transistor npn npn MN4.First end of N transistor npn npn MN4 is coupled to the first end TM11 of string and switch unit 141, and its control end is coupled to first end of resistance R 6.First end of resistance R 7 is coupled to second end of N transistor npn npn MN4, and its second end is coupled to second end of resistance R 6.
On the other hand, first end of P transistor npn npn MP1 is coupled to the first end TM11 of string and switch unit 141, and its control end is coupled to second end of resistance R 5, and its second end is coupled to the 3rd end TM13 of string and switch unit 141.The cathode terminal of diode D3 is coupled to second end of P transistor npn npn MP1, and its anode tap is coupled to the second end TM12 of string and switch unit 141.First end of N transistor npn npn MN3 is coupled to the anode tap of diode D3, and its control end is coupled to first end of resistance R 7, and its second end is coupled to the 4th end TM14 of string and switch unit 141.
In integrated operation, along with accurate the switching of switching signal S41, the first control of Electric potentials unit 410 and the second control of Electric potentials unit 420 can be switched synchronous operation to first state or second state with the state that causes string and switch unit 141.Wherein, when string and switch unit 141 when maintaining first state, P transistor npn npn MP1 and N transistor npn npn MN3 will be maintained at the state of conducting, be electrically connected to its 3rd end TM13 with the first end TM11 that causes string and switch unit 141, and the second end TM12 of string and switch unit 141 is electrically connected to its 4th end TM14.Relatively, when string and switch unit 141 when maintaining second state, P transistor npn npn MP1 and N transistor npn npn MN3 will be maintained at the state of not conducting, and diode D3 conducting.At this moment, the second end TM12 of string and switch unit 141 is electrically connected to its 3rd end TM13, and the first end TM11 of string and switch unit 141 does not electrically link to each other with the 4th end TM14.At this moment, the load unit 101 that connected of the string and the second end TM12 of switch unit 141 will be connected in series mutually with the load unit 102 that its 3rd end TM13 is connect.
Fig. 5 is according to the string of another embodiment of the present invention and the circuit diagram of switch unit.What deserves to be mentioned is, string shown in Figure 4 and switch unit are to control the first control of Electric potentials unit 410 by switching signal S41, after drive the second control of Electric potentials unit 420 by the first control of Electric potentials unit 410 again, to cause the first control of Electric potentials unit 410 and the second control of Electric potentials unit, 420 synchronous operations.Yet, in practical application, as shown in Figure 5, string and switch unit can utilize switching signal S41 to control the second control of Electric potentials unit 420, drive the mode of the first control of Electric potentials unit 410 afterwards again by the second control of Electric potentials unit 420, reach the synchronous operation of the first control of Electric potentials unit 410 and the second control of Electric potentials unit 420.At this, be with the string shown in Figure 4 and the maximum difference of switch unit, in Fig. 5, the second control of Electric potentials unit 420 is to bring in by the control of N transistor npn npn MN4 to receive switching signal S41, and the first control of Electric potentials unit 410 then is coupled to the 4th end TM14 of string and switch unit 141 by second end of P transistor npn npn MP2.In addition, the second control of Electric potentials unit 420 is first ends by N transistor npn npn MN4, is coupled to the control end of P transistor npn npn MP2 in the first control of Electric potentials unit 410.It should be noted that at diode D3 shown in Figure 5 and can finish by other tools equivalent electric circuit unidirectional or two-way admittance.And the first control of Electric potentials unit 410 and the second control of Electric potentials unit 420 also can be finished other control circuit.
Fig. 6 is the circuit diagram according to the electronic installation of another embodiment of the present invention.With reference to Fig. 6, electronic installation 600 comprises a plurality of load units 611～616, a plurality of string and switch unit 621～625 and a control die set 630.Wherein, similar to Fig. 1 embodiment, electronic installation 600 can be controlled the state of string and switch unit 621～625 by control die set 630, and then switch load unit 611～616 annexation each other.
In Fig. 6 embodiment, the difference along with the coupling mode of load unit 611～616 can obtain different strings and effect.For instance, Fig. 7 A to Fig. 7 D is the circuit diagram in order to the annexation of the load unit of key diagram 6, shown in table 1 and Fig. 7 A-7D, when the state of string and switch unit 621～625 is all first state (attitude in parallel), can obtain load unit 611～616 effect all parallel with one another shown in Fig. 7 A; Switch unit 621,623,625 is all second state (series connection attitude) when going here and there also, and goes here and there when also switch unit 622,624 is all first state (attitude in parallel), can obtain the effect of 611～616 liang of two-phase strings of load unit shown in Fig. 7 B; When string and switch unit 621,622,624,625 are all second state (series connection attitude), and string and switch unit 623 be when being first state (attitude in parallel), can obtain that per 3 load units are a string effect in the load unit 611～616 shown in Fig. 7 C; When string and switch unit 621～625 when being all second state (series connection attitude), can obtain load unit 611～616 effect of series connection all mutually shown in Fig. 7 D.
Table 1
In addition, the maximum difference of Fig. 6 embodiment and Fig. 1 embodiment is, load unit 611～616 can be respectively by a resistance, an electric capacity, an inductance, a diode, a two-carrier transistor, a field-effect transistor, a light-emitting diode, a laser diode, a Photosensing Units, a signal receiver, a signal projector, a battery, a direct current power supply or above-mentioned each combination of elements is constituted.Thus, along with the difference of the element of load unit 611～616, load unit 611～616 one of them or a plurality of, will can be used as the energy storage purposes, when the outer end electric energy is not enough, to power to light-emitting diode.
In addition, load unit 611～616 one of them or a plurality of, the also purposes that can accept as signal receiving the wired or wireless signal in outer end, and then is adjusted the reference current value in the control die set, to reach the purposes that luminosity or colourity (color) are adjusted.Moreover, load unit 611～616 one of them or a plurality of, also can be as the purposes of signal emission, its signal being sent to the outer end other control system, or as the usefulness of other lumination of light emitting diode tandems of control.In addition, load unit 611～616 one of them or a plurality of, make of also can be as a metastable power supply supply purposes, power supply uses to other system.
What deserves to be mentioned is that when load unit 611～616 need not extra supply voltage, electronic installation 600 need not to dispose voltage control unit 180 as shown in Figure 1.Moreover rectification unit 110 shown in Figure 1 also can be configured in outer terminal circuit according to design, so electronic installation 600 also optionally disposes rectification unit.Thin portion circuit framework and start principle as for each member in the electronic installation 600 are included in the various embodiments described above, so do not repeat them here.
Further, first end of described string of Fig. 1 and Fig. 6 and switch unit all is couple to input voltage VIN, and voltage peak just, and the 4th end of string and switch unit all is couple to earth terminal, just the voltage minimum point.Yet in practical application, string and switch unit can also reach similar change action by another kind of connection to the relation of coupling of load unit.
For instance, Fig. 8 is the circuit diagram according to the electronic installation of further embodiment of this invention.Electronic installation 800 comprises a plurality of load units 811～814, a plurality of string and switch unit 821～823 and a control die set 830.Wherein, be with the maximum difference of Fig. 1, Fig. 6 embodiment, Fig. 8 looks as a whole with string and switch unit 821 load unit 811-812, and with load unit 813-814 with the string and switch unit 823 be considered as another integral body, and the string between two integral body and the relation then by the string and switch unit 822 controlled.In addition, the just thin portion relation of coupling, the 4th end of string and switch unit 821 is second ends that are coupled to load unit 812, and the 4th end of string and switch unit 823 is second ends that are coupled to load unit 814.
Moreover similar to Fig. 1, Fig. 6 embodiment, electronic installation 800 can be controlled the state of string and switch unit 821～823 by control die set 830, and then switch load unit 811～814 annexation each other.For instance, in Fig. 8 embodiment, Fig. 9 A to Fig. 9 C is the circuit diagram in order to the annexation of the load unit of key diagram 8, shown in table 2 and Fig. 9 A-9C, when the state of string and switch unit 821～823 is all first state (attitude in parallel), can obtain load unit 811～814 effect all parallel with one another shown in Fig. 9 A; Switch unit 821,823 is all second state (series connection attitude) when going here and there also, and goes here and there when also switch unit 822 is first state (attitude in parallel), can obtain the effect of 811～814 liang of two-phase strings of load unit shown in Fig. 9 B; When string and switch unit 811～814 when being all second state (series connection attitude), can obtain load unit 811～814 effect of series connection all mutually shown in Fig. 9 C.
Table 2
In addition, load unit 811～814 shown in Figure 8 also is made of the combination of different passive devices, active member or passive device and active member respectively.Moreover electronic installation 800 is required rectification unit and the voltage control unit of optionally disposing of viewable design also.Thin portion circuit framework and start principle as for each member in the electronic installation 800 are included in the various embodiments described above, so do not repeat them here.
No matter the relation of coupling of string and switch unit and load unit of it should be noted that is to adopt the coupling mode of Fig. 1, Fig. 6 or Fig. 8, all can strengthen the service behaviour of electronic installation further by adding mode a string and switch unit and an electric capacity.
For instance, if electronic installation shown in Figure 8 800 adds a string and a switch unit 801 and a capacitor C 81, and load unit 811～814 has identical circuit framework with load unit 101～105 shown in Figure 1, just load unit 811～814 comprises a LED serial and a flow-dividing control unit separately, and electronic installation 800 has additional configuration one voltage control unit that the required voltage source in flow-dividing control unit of load unit 811～814 is provided.In addition, further suppose the LED serial in the load unit 811～814, its operating voltage is more than 12 volts, and in 20 volts～40 volts best operating efficiencies arranged.
In the case, at the beginning, load unit 811～814 is all parallel with one another.Then, when input voltage VIN is raised to 12V by 0V for the first time, the input voltage VIN of this moment can't be lighted LED serial in the load unit 811～814, but input voltage VIN can continue to capacitor C 81 chargings, have 12 volts electric weight to cause capacitor C 81.When input voltage VIN arrives 12 volts and when being lower than 20 volts, the LED serial in the load unit 811～814 is lighted for the first time, but also not in the voltage power supply interval of the best, and capacitor C 81 stored electric weight will edge up 20 volts this moment.When input voltage VIN arrives 20 volts and when being lower than 40 volts, the LED serial in the load unit 811～814 is in the voltage power supply interval of the best, and capacitor C 81 stored electric weight have edged up 40 volts for the first time.
When input voltage VIN arrives 40 volts and when being lower than 80 volts for the first time, string and switch unit 811,813,801 will be switched to second state (series connection attitude), LED serial in the load unit 811～814 will change series connection in twos into, and the cross-pressure of each LED serial is 1/2 input voltage VIN.At this moment, the cross-pressure of each LED serial can be edged up 40 volts (half of 80 volts) by 20 volts (half of 40 volts), and still in the voltage power supply interval of the best, but 81 of capacitor C are isolated from the outside, and maintain 40 volts always.
When input voltage VIN arrived 80 volts, string and switch unit 811～814,801 all switched to second state (series connection attitude), and it is a string that LED serial changes whole series connection into, and the cross-pressure of each LED serial is 1/4 input voltage VIN.At this moment, the cross-pressure of each LED serial can be between 20 volts (80 volts 1/4) and 39 volts (behind the 110 volt AC electric rectifications ceiling voltage 155 volts 1/4), still in the voltage power supply interval of the best.In addition, capacitor C 81 still is isolated from the outside, and maintains 40 volts always.
When input voltage VIN dropped to below 80 volts but is higher than 40 volts, string and switch unit 812 were cut to first state (attitude in parallel), and LED serial is got back to series connection in twos, and cross-pressure is got back to 1/2 of input voltage VIN separately.At this moment, the cross-pressure of each LED serial can be between 20 volts and 40 volts, and still in the voltage power supply interval of the best.In addition, capacitor C 81 continues to be isolated from the outside, and also maintains 40 volts always.
When input voltage VIN dropped to below 40 volts, string and switch unit 811～814 all were cut to first state (attitude in parallel), and LED serial is in parallel separately, and in parallel with capacitor C 81.At this moment, input voltage VIN is lower than the voltage of capacitor C 81, and capacitor C 81 will replace input voltage VIN and become the power supply source of LED serial.At this, as long as the capacitance of capacitor C 81 is enough, then LED serial can be maintained optimum Working (＞20 volts), be raised to more than 20 volts up to the next one cycle of boosting.Thus, can make LED serial maintain lasting illuminating state, and then eliminate the problem of light source scintillation.
It should be noted that electronic installation shown in Figure 8 800 is two load units and a string and switch unit to be looked as a whole, carries out string and switching between the overall architecture by another string and switch unit afterwards again.Yet in practical application, those skilled in the art also can the overall architecture that Fig. 8 is cited extend to a plurality of load units and a plurality of string and switch unit.
For instance, Figure 10 shows that circuit diagram according to the electronic installation of yet another embodiment of the invention.Electronic installation 1000 comprises a plurality of load unit 1100_1～1100_n and 1200_1～1200_n, a plurality of string and switch unit 1300_1～1300_m, 1400,1500_1～1500_m and 1600 and one control die set 1700.Wherein, Figure 10 is considered as an overall architecture with load unit 1100_1～1100_n with string and switch unit 1300_1～1300_m, and with load unit 1200_1～1200_n with the string and switch unit 1500_1～1500_m be considered as another overall architecture, and the string between two overall architecture and the relation can by the string and switch unit 1400 be controlled.Similarly, the 3rd end of string and switch unit 1600 can be used to be connected with another overall architecture.By that analogy, electronic installation 1000 can be combined by a plurality of overall architecture.In addition, control die set 1700 is the states in order to control string and switch unit 1300_1～1300_m, 1400,1500_1～1500_m and 1600, causing string and the relation between load unit 1100_1～1100_n and the 1200_1～1200_n, along with the variation of the accurate position of input voltage VIN changes accordingly.Thin portion circuit framework and start principle as for each member in the electronic installation 1000 are included in the various embodiments described above, so do not repeat them here.
In sum, the present invention is that utilization string and switch unit come the connection status of switch load unit, and is accurate the foundation that variation is used as switching according to input voltage.By this, but electronic installation of the present invention with direct control under alternating voltage, and need not additional configuration one AC/DC converter, or must collocation one transformer.Change and it, electronic installation of the present invention has microminiaturized advantage, and can increase user's convenience.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (21)
1. electronic installation is characterized in that it comprises:
N load unit has one first end and one second end separately, and wherein first end of the 1st load unit is in order to receive an input voltage, and second end of N load unit is coupled to an earth terminal, and N is the integer greater than 1;
(N-1) individual string and switch unit, has one first end to the 4th end separately, wherein each is somebody's turn to do first end of (N-1) individual string and switch unit in order to receive this input voltage, i the string and second end of switch unit are coupled to second end of i load unit, i string and the 3rd end of switch unit are coupled to first end of (i+1) individual load unit, and each should (N-1) individual string and the 4th end of switch unit be coupled to this earth terminal, i is integer and 1≤i≤(N-1); And
One control die set changes in order to the accurate position according to this input voltage, and should (N-1) individual string and switch unit switch to one first state or one second state,
Wherein, be somebody's turn to do (N-1) individual string and switch unit under this first state, its first end of conducting and the 3rd end, and its second end of conducting and the 4th end, and be somebody's turn to do (N-1) individual string and switch unit under this second state, its first end of not conducting and the 4th end, and its second end of conducting and the 3rd end.
2. electronic installation according to claim 1 is characterized in that wherein this electronic installation is a lighting device, and k is integer and 1≤k≤N, and k load unit comprises:
One LED serial in order to receiving the voltage from first end of k load unit, and comprises M light-emitting diode of series connection, and M is the integer greater than 1; And
One flow-dividing control unit, in order to this M light-emitting diode M shunt paths of second end of k load unit of conducting to the respectively to be provided, and when this input voltage rises in time since the 1st shunt paths this M of conducting shunt paths one by one, and when this input voltage descends in time, close this M shunt paths one by one since M shunt paths.
3. electronic installation according to claim 2 is characterized in that wherein this flow-dividing control unit comprises:
One reference current generator is in order to produce a reference current signal;
M current regulator, be coupled to this M light-emitting diode, and in order to this M shunt paths and M sensed current signal to be provided, wherein j current regulator is in order to the flow through electric current of j shunt paths of detecting, and producing corresponding j sensed current signal, j is integer and 1≤j≤(M-1); And
One current controller, couple this voltage-sensor, this reference current generator and this M current regulator, and in order to produce M flow-dividing control signal, wherein this current controller is when j sensed current signal departs from the default multiplying power of this reference current signal one, return j flow-dividing control signal, switch the conducting state or the resistance value of j shunt paths to cause j current regulator.
4. electronic installation according to claim 3 is characterized in that wherein this flow-dividing control unit comprises:
One voltage-sensor in order to this input voltage of sensing over time, and produces a corresponding sensing voltage variable signal,
Wherein, this current controller returns this M flow-dividing control signal also according to this sensing voltage variable signal.
5. electronic installation according to claim 2 is characterized in that described electronic installation also comprises:
One voltage control unit, be coupled to this flow-dividing control unit of each this N load unit, in order to utilize this input voltage to form a reference voltage, and capture the formed a plurality of node voltages of this LED serial in this N load unit, with from greater than select the described a plurality of node voltages of the part of this reference voltage have the minimum voltage value node voltage as a supply voltage, wherein, this flow-dividing control unit of each this N load unit operates in respectively under this supply voltage.
6. electronic installation according to claim 5 is characterized in that wherein this voltage control unit comprises:
One first resistance, its first end is in order to receive this input voltage;
One first Zener diode, its cathode terminal are coupled to second end of this first resistance, and the anode tap of this first Zener diode is coupled to this earth terminal;
One second resistance, its first end is in order to receive this input voltage;
One the one N transistor npn npn, its first end is coupled to second end of this second resistance, and the control end of a N transistor npn npn is coupled to the cathode terminal of this first Zener diode;
One first diode, its anode tap are coupled to second end of a N transistor npn npn, and the cathode terminal of this first diode is in order to produce this supply voltage;
One electric capacity, its first end is coupled to the cathode terminal of this first diode, and second end of this electric capacity is coupled to this earth terminal;
S second diode, wherein the anode tap of t second diode is in order to receive t node voltage, and S is the integer greater than 1, and t is integer and 1≤t≤S;
S the 3rd resistance, wherein first end of t the 3rd resistance is coupled to the cathode terminal of t second diode; And
S the 2nd N transistor npn npn, wherein first end of t the 2nd N transistor npn npn is coupled to second end of t the 3rd resistance, and second end of this S the 2nd N transistor npn npn is coupled to first end of this electric capacity, the control end of this S the 2nd N transistor npn npn is coupled to the cathode terminal of this first Zener diode
Wherein, the 1st size to the accurate position of S node voltage is to increase progressively in regular turn, and the 1st size to the layout area of S the 2nd N transistor npn npn is to successively decrease in regular turn, and the 1st the resistance size to S the 3rd resistance is to increase progressively in regular turn.
7. electronic installation according to claim 1 is characterized in that wherein this control die set comprises:
(N-1) individual string and control unit, wherein i string and control unit are in order to control i string and switch unit, and switch unit switches to this first state or this second state to go here and there also with i; And
One pressure unit, in order to this input voltage is carried out step-down, and with reference to this input voltage after the step-down, and produce corresponding a plurality of triggering signal,
Wherein, be somebody's turn to do (N-1) individual string and control unit, control this (N-1) individual string and switch unit in order to according to described a plurality of triggering signals.
8. electronic installation according to claim 7 is characterized in that wherein i string and switch unit comprise:
One the one P transistor npn npn, its first end are coupled to first end of i string and switch unit, and second end of a P transistor npn npn is coupled to the 3rd end of i string and switch unit;
One the 3rd diode, its cathode terminal are coupled to second end of a P transistor npn npn, and the anode tap of the 3rd diode is coupled to second end of i string and switch unit;
One the 3rd N transistor npn npn, its first end is coupled to the anode tap of the 3rd diode, and second end of the 3rd N transistor npn npn is coupled to the 4th end of i string and switch unit;
One first control of Electric potentials unit is coupled to also control unit of the control end of i the string and first end of switch unit, a P transistor npn npn and i string; And
One second control of Electric potentials unit is coupled to control end and this first control of Electric potentials unit of i the string and first end of switch unit and the 4th end, the 3rd N transistor npn npn,
Wherein, the running of this first control of Electric potentials unit and this second control of Electric potentials units synchronization, with cause a P transistor npn npn and the 3rd N transistor npn npn with reference to from i string also control unit switching signal while conducting or close simultaneously.
9. electronic installation according to claim 8 is characterized in that wherein this first control of Electric potentials unit comprises:
One the 4th resistance, its first end are coupled to first end of i string and switch unit, and second end of the 4th resistance is coupled to i string and control unit;
One second Zener diode, its cathode terminal are coupled to first end of the 4th resistance, and the anode tap of this second Zener diode is coupled to second end of the 4th resistance;
One the 5th resistance, its first end is coupled to first end of the 4th resistance, and second end of the 5th resistance is coupled to the control end of a P transistor npn npn; And
One the 2nd P transistor npn npn, its first end is coupled to second end of the 5th resistance, and the control end of the 2nd P transistor npn npn is coupled to second end of the 4th resistance, and second end of the 2nd P transistor npn npn is coupled to this second control of Electric potentials unit.
10. electronic installation according to claim 8 is characterized in that wherein this second control of Electric potentials unit comprises:
One the 6th resistance, its first end are coupled to this first control of Electric potentials unit, and second end of the 6th resistance is coupled to the 4th end of i string and switch unit;
One the 3rd Zener diode, its cathode terminal are coupled to first end of the 6th resistance, and the anode tap of the 3rd Zener diode is coupled to second end of the 6th resistance;
One the 7th resistance, its first end is coupled to the control end of the 3rd N transistor npn npn, and second end of the 7th resistance is coupled to second end of the 6th resistance; And
One the 4th N transistor npn npn, its first end are coupled to first end of i string and switch unit, and the control end of the 4th N transistor npn npn is coupled to first end of the 6th resistance, and second end of the 4th N transistor npn npn is coupled to first end of the 7th resistance.
11. electronic installation according to claim 1 is characterized in that wherein this N load unit is respectively by a resistance, an electric capacity, an inductance, a diode, a two-carrier transistor, a field-effect transistor, a light-emitting diode, a laser diode, a Photosensing Units, a signal receiver, a signal projector, a battery, a direct current power supply or above-mentioned each combination of elements is constituted.
12. electronic installation according to claim 1 is characterized in that described electronic installation also comprises a rectification unit, in order to an alternating voltage is carried out rectification, to produce this input voltage.
13. an electronic installation is characterized in that it comprises:
N first load unit has one first end and one second end separately, and wherein first end of the 1st first load unit is in order to receive an input voltage, and N is the integer greater than 1;
(N-1) individual first string and the switch unit, has one first end to the 4th end separately, first end that wherein is somebody's turn to do (N-1) individual first string and switch unit all is coupled to first end of the 1st first load unit, second end of individual first string of i and switch unit is coupled to second end of i first load unit, the 3rd end of individual first string of i and switch unit is coupled to first end of (i+1) individual first load unit, and the 4th end of should (N-1) individual first string and switch unit is coupled to second end of N first load unit, and i is integer and 1≤i≤(N-1);
One second string and switch unit, has one first end to the 4th end, first end of this second string and switch unit is in order to receive this input voltage, second end of this second string and switch unit is coupled to second end of N first load unit, and the 4th end of this second string and switch unit is coupled to an earth terminal; And
One control die set changes in order to the accurate position according to this input voltage, and should (N-1) individual first string and switch unit second go here and there also that switch unit switches to one first state or one second state with this,
Wherein, be somebody's turn to do (N-1) individual first string and switch unit and this second string and switch unit under this first state, its first end of conducting and the 3rd end, and its second end of conducting and the 4th end, and be somebody's turn to do (N-1) individual first string and switch unit and this second string and switch unit under this second state, its first end of not conducting and the 4th end, and its second end of conducting and the 3rd end.
14. electronic installation according to claim 13 is characterized in that wherein this electronic installation is a lighting device, k is integer and 1≤k≤2N, and k first load unit comprises:
One LED serial in order to receiving the voltage from first end of k first load unit, and comprises M light-emitting diode of series connection, and M is the integer greater than 1; And
One flow-dividing control unit, in order to this M light-emitting diode M shunt paths of second end of conducting to the k first load unit respectively to be provided, and when this input voltage rises in time since the 1st shunt paths this M of conducting shunt paths one by one, and when this input voltage descends in time, close this M shunt paths one by one since M shunt paths.
15. electronic installation according to claim 14 is characterized in that described electronic installation also comprises:
One voltage control unit, be coupled to this flow-dividing control unit of this N first load unit, in order to utilize this input voltage to form a reference voltage, and capture the formed a plurality of node voltages of this LED serial in this N first load unit, with from these a plurality of node voltages of part, select greater than this reference voltage have the minimum voltage value node voltage as a supply voltage, wherein, this flow-dividing control unit of this N first load unit operates in respectively under this supply voltage.
16. electronic installation according to claim 13 is characterized in that wherein this control die set comprises:
Go here and there and control unit for N, wherein i string and control unit are in order to control i first string and the switch unit, so that i first string and switch unit are switched to this first state or this second state, and N the string and control unit in order to control this second the string and switch unit, with this second the string and switch unit switch to this first state or this second state; And
One pressure unit, in order to this input voltage is carried out step-down, and with reference to this input voltage after the step-down, and produce corresponding a plurality of triggering signal,
Wherein, this N string and control unit be in order to according to described a plurality of triggering signals, controls this (N-1) individual first string and switch unit and second go here and there also switch unit with this.
17. electronic installation according to claim 13 is characterized in that wherein this N first load unit is respectively by a resistance, an electric capacity, an inductance, a diode, a two-carrier transistor, a field-effect transistor, a light-emitting diode, a laser diode, a Photosensing Units, a signal receiver, a signal projector, a battery, a direct current power supply or above-mentioned each combination of elements is constituted.
18. electronic installation according to claim 13 is characterized in that described electronic installation also comprises a rectification unit, in order to an alternating voltage is carried out rectification, to produce this input voltage.
19. electronic installation according to claim 13 is characterized in that described electronic installation also comprises:
S second load unit has one first end and one second end separately, and wherein first end of the 1st second load unit is coupled to the 3rd end of this second string and switch unit, and S is the integer greater than 1;
(S-1) individual the 3rd string and switch unit, has one first end to the 4th end separately, first end that wherein is somebody's turn to do (S-1) individual the 3rd string and switch unit all is coupled to first end of the 1st second load unit, second end of individual the 3rd string of j and switch unit is coupled to second end of j second load unit, the 3rd end of individual the 3rd string of j and switch unit is coupled to first end of (j+1) individual second load unit, and the 4th end of should (S-1) individual the 3rd string and switch unit is coupled to second end of S second load unit, and wherein j is integer and 1≤j≤(S-1); And
One the 4th string and switch unit, has one first end to the 4th end, wherein first end of the 4th string and switch unit is in order to receive this input voltage, second end of the 4th string and switch unit is coupled to second end of S second load unit, the 4th end of the 4th string and switch unit is coupled to this earth terminal, wherein, this control die set also changes in order to the accurate position according to this input voltage, and should (S-1) individual the 3rd string and switch unit and the 4th go here and there also that switch unit switches to this first state or this second state.
20. electronic installation according to claim 13 is characterized in that described electronic installation also comprises:
P the 3rd load unit, have one first end and one second end separately, wherein first end of the 1st the 3rd load unit is coupled to the 3rd end of this second string and switch unit, and second end of P the 3rd load unit is coupled to this earth terminal, and P is the integer greater than 1; And
(P-1) individual the 5th string and switch unit, has one first end to the 4th end separately, wherein should, (P-1) first end of individual the 5th string and switch unit all is coupled to first end of the 1st the 3rd load unit, second end of individual the 5th string of k and switch unit is coupled to second end of k the 3rd load unit, the 3rd end of k the 5th string and switch unit is coupled to the, (k+1) first end of individual the 3rd load unit, and should, (P-1) the 4th end of individual the 5th string and switch unit couples this earth terminal, wherein k be integer and 1≤k≤, (P-1)
Wherein, this control die set also changes in order to the accurate position according to this input voltage, and should (P-1) individual the 5th string also switch unit switch to this first state or this second state.
21. electronic installation according to claim 13 is characterized in that described electronic installation is also and draw together:
One the 4th load unit has one first end and one second end, and wherein second end of the 4th load unit is coupled to this earth terminal; And
One the 6th string and switch unit, has one first end to the 4th end, wherein first end of the 6th string and switch unit is in order to receive this input voltage, the 6th string and the 3rd end of switch unit and first end and second end that the 4th end is coupled to the 4th load unit respectively, wherein this control die set also changes in order to the accurate position according to this input voltage, and the 6th string and switch unit are switched to this first state or this second state.
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| CN2009102465125A CN102083248B (en) | 2009-11-30 | 2009-11-30 | Electronic device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103236892A (en) * | 2013-04-18 | 2013-08-07 | 国家电网公司 | Carrier communication testing system |
| CN103826366A (en) * | 2014-02-24 | 2014-05-28 | 上海亚明照明有限公司 | High-voltage LED driving circuit capable of working under full voltages |
| CN104539322A (en) * | 2014-11-27 | 2015-04-22 | 成都远为天胜科技有限公司 | Electronic communication device |
| CN108224107A (en) * | 2016-12-16 | 2018-06-29 | 廖彩姿 | Low-current energy-saving environment-friendly light control equipment |
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| CN2929447Y (en) * | 2006-06-29 | 2007-08-01 | 宗慎平 | Trystal lamp capable of directly connecting AC city power |
| TWM323558U (en) * | 2007-05-07 | 2007-12-11 | Yuan-Fong Chung | LED lamp set apparatus |
| CN101086325A (en) * | 2006-11-21 | 2007-12-12 | 孙小安 | LED lamp bulb |
| CN101137261A (en) * | 2006-08-29 | 2008-03-05 | 安华高科技Ecbuip(新加坡)私人有限公司 | Device and method for driving LED |
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| CN1526984A (en) * | 2003-09-23 | 2004-09-08 | 孙润光 | AC driven electroluminescent device |
| CN2929447Y (en) * | 2006-06-29 | 2007-08-01 | 宗慎平 | Trystal lamp capable of directly connecting AC city power |
| CN101137261A (en) * | 2006-08-29 | 2008-03-05 | 安华高科技Ecbuip(新加坡)私人有限公司 | Device and method for driving LED |
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| CN103236892A (en) * | 2013-04-18 | 2013-08-07 | 国家电网公司 | Carrier communication testing system |
| CN103236892B (en) * | 2013-04-18 | 2015-05-27 | 国家电网公司 | Carrier communication testing system |
| CN103826366A (en) * | 2014-02-24 | 2014-05-28 | 上海亚明照明有限公司 | High-voltage LED driving circuit capable of working under full voltages |
| CN103826366B (en) * | 2014-02-24 | 2016-03-16 | 上海亚明照明有限公司 | The high-voltage LED driving circuit under full voltage can be operated in |
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| CN108224107A (en) * | 2016-12-16 | 2018-06-29 | 廖彩姿 | Low-current energy-saving environment-friendly light control equipment |
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| CN102083248B (en) | 2013-12-11 |
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