CN2196792Y - Automatic voltage-regulating protector for super-low power-consumption integreted circuit - Google Patents
Automatic voltage-regulating protector for super-low power-consumption integreted circuit Download PDFInfo
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- CN2196792Y CN2196792Y CN 94204855 CN94204855U CN2196792Y CN 2196792 Y CN2196792 Y CN 2196792Y CN 94204855 CN94204855 CN 94204855 CN 94204855 U CN94204855 U CN 94204855U CN 2196792 Y CN2196792 Y CN 2196792Y
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Abstract
The utility model relates to a novel automatic voltage-regulating protector for a super-low power-consumption integrated circuit, which has multiple functions of wide range of application of low limited voltage, low power consumption, power off in an over voltage state, start quickly or in a time delay state for supply power, etc. The utility model is composed of a local power, a unit of the voltage boosting and the voltage regulating, an over-voltage protecting unit and a display circuit of work state. The utility model can automatically control the connection of an autotransformer in the network of voltage regulation according to the change of the voltage of an electric network, which solves the defects of the existing protector that the transformer must be connected in the electric network for working, and the reactive power loss is overlarge. Thus, the protector can still realize reliable power-off protection to household appliances under the high voltage of 400V, and can tolerate impact for 5 to 10 minutes. The utility model has the characteristics of safety and utility.
Description
The utility model belongs to energy-saving household electrical appliance automatic Regulation safety guard.
Any household electrical appliance all have certain scope of application to line voltage, exceed this scope, then can cause permanent damage.Frequent starting in also forbidding in the use of household electrical appliance such as refrigerator, air-conditioning in short-term restores electricity again after the particularly normal sudden power in service immediately, tends to be difficult under the high-pressure state start because of compressor is in, and causes electric current excessive and damage motor.Though refrigerator, air-conditioning self all has overheated, overcurrent protective relaying device with regard to the present power supply situation of China, still are difficult to realize its reliable protection function.China is developing country, the situation of power tense also was difficult to be alleviated in long period of time, overload, certainly will cause voltage fluctuation excessive, the power failure phenomenon often takes place, some area even, the phenomenon that causes the 380V phase voltage to scurry into utility grid because of faults such as thunderbolt, neutral line break, misphases also happens occasionally, and has seriously influenced the safe handling of household electrical appliance.For this reason, be necessary attached a kind of safety guard in the current supply circuit of household electrical appliance, to guarantee the normal use of household electrical appliance with kinds of protect functions such as overvoltage outage, time-delay power supply, under-voltage liftings.
Present commercially available pressure regulation protector; localpower and sampling detection signal are all taken from pair limit winding of autotransformer in the pressure regulation network; as long as this protective device work; the transformer of several hectowatts and even thousands of watts just must insert electrical network all the time, but in fact the excessive situation of voltage ripple of power network is not that whole day all can take place.Because the conversion efficiency of transformer is lower, even the autotransformer of particular design also has the open circuit loss about 3-5%, the ten hundreds of this pressure regulation protector in the whole nation inserts electrical network, certainly will cause great waste; And such protector also can cause overload to damage because the restriction of the condition of its transformer own is difficult to bear high voltage and impacts, and when line voltage was too high, that was afraid of the very short time.
The purpose of this utility model is to avoid the deficiency of above-mentioned technology and a kind of more safe and practical novel ultra-low power consumption integrated circuit automatic Regulation protector is provided; it not only has kinds of protect functions such as the pressure regulation of boosting automatically, overvoltage outage, time-delay or quick startup power supply; and can be according to the variation of line voltage; automatically the access of autotransformer in the control pressure regulation network; reduce open circuit loss; realize energy-conservation to greatest extent; also make this protector under the 400V high voltage, still can realize reliable power-off protection, and can tolerate 5-10 minute impact electrical appliance.
The purpose of this utility model adopts following technical scheme to finish:
Ultra-low power consumption integrated circuit automatic Regulation protector is connected in parallel in the current supply circuit of electrical appliance; utilize the closure conversion of switch contact in its electronic switch control circuit; the access of control boost network and the break-make of current supply circuit; the realization pressure regulation of boosting; the superpotential outage, kinds of protect function and energy saving purposes such as time-delay or quick startup power supply.
Its element circuit comprises localpower, the duty display circuit of boost pressure regulation unit, Overvoltage protecting unit and each self-loop.
One, localpower is directly supplied with through resistance-capacitance depressurization, rectification, filtering, voltage stabilizing by utility grid.
Two, the pressure regulation unit that boosts comprises that under-voltage sampling detects comparator circuit, under-voltage ON-OFF control circuit, pressure regulation network and display circuit etc. boost.
One termination civil power phase line of undervoltage detection circuit, another termination localpower negative terminal, by the drag flow diode, the step-down sample resistance is composed in series.Civil power obtains the under-voltage signal of variation through the step-down of half-wave drag flow on sample resistance, with relatively back output of reference voltage.
Under-voltage ON-OFF control circuit is made up of switch triode and the relay that is connected on collector loop.
The pressure regulation network that boosts is made up of one group of normally closed contact in the contact self coupling step-up transformer and relay a pair of normally-open normally-close contact and another.The common port of a pair of normally-open normally-close contact is as the output terminal of power supply phase line in the present networks, another termination civil power phase line of its normally opened contact, another termination autotransformer of normally closed contact output terminal that boosts, another group normally closed contact is serially connected in the input end of civil power phase line and autotransformer; Utilize the closure conversion of its contact, the access of control self coupling step-up transformer.
The luminescent device display circuit is connected across the duty demonstration of the output terminal of single-circuit transformer as this network insertion.
When line voltage just often, under-voltage sampling detects comparator circuit output noble potential, the switching tube conducting, relay adhesive work, two groups of normally closed contacts disconnect, another group normally opened contact closure, the not cut-in operation of self coupling step-up transformer, the straight-through power supply of utility grid.
When line voltage is lower than normal value, under-voltage detection comparator circuit will pick up the under-voltage signal voltage that has changed, compare with given reference voltage, make this circuit output electronegative potential, switching tube ends, the relay outage discharges, one group of normally opened contact transfers disconnection to by closure, and two groups of normally closed contacts transfer closure to by disconnection in addition, and line voltage inserts the transformer input end by one group of normally closed contact, boost after another normally closed contact output realizes boosting pressure regulation.Simultaneously, the pressure regulation network insertion work display lamp that boosts is bright.
Because just often at line voltage, not cut-in operation of transformer, this just greatly reduces reactive loss, and especially for the pressure regulation protector or the non-whole day voltage area all on the low side of high-power output, the consumption reduction power savings is particularly remarkable.
Three, the overvoltage protection unit comprises: overvoltage sampling detects comparator circuit, overpressure switch control circuit and the display circuit that is attached thereto etc.
Over-voltage detection circuit one termination pressure regulation network output phase line, the negative terminal of another termination localpower, by the drag flow diode, the step-down sample resistance is composed in series.Out-put supply obtains the overvoltage signal voltage and the relatively back output of reference voltage of variation through the step-down of half-wave drag flow on sample resistance.The overvoltage display circuit that luminescent device is formed is connected across the output terminal and the localpower anode of comparator circuit.
The overpressure switch control circuit is made of diode gate circuit, master switch circuit and the rc-delay circuit that is attached thereto, relay and display circuit etc., adopt the low level triggering mode, integrated circuit is made the master control driver, and the capacitance-resistance timing circuit is controlled reset time, and relay is made the master control switch.For guaranteeing enough driving powers, adopt the two integrated circuit way of output in parallel.The negative input end of integrated circuit connects the output terminal of under-voltage comparator circuit through the diode circuit door, negative input end also be connected across localpower on rc-delay circuit link to each other, in fact constituted one and had a regularly monostable switch circuit of link by what low level triggered.Relay line bag is connected across the anode of this circuit output end and localpower, and its normally opened contact is serially connected in the phase line loop of power supply output, utilizes the closure of its normally opened contact, realizes time-delay power supply or overvoltage power-off protection.On the charging resistor of its delay circuit and be connected to time-delay or start fast power supply selector button switch.
The ON-OFF control circuit output terminal is connected to normal power supply, outage or the delay working status display circuit that luminescent device is formed.
The output terminal of power supply is the output voltage display circuit be made up of voltage table of cross-over connection also.
Under the normal condition, the overvoltage sampling detects comparator circuit output noble potential, ON-OFF control circuit output electronegative potential, relay work, the closed power supply of normally opened contact.
When output voltage is higher than normal value; overvoltage sampling testing circuit will pick up the overvoltage signal voltage that has changed, and compares with given reference voltage, makes comparator circuit output electronegative potential; the diode gate circuit conducting; the delay capacitor discharge, the upset of master switch circuit, its output terminal becomes noble potential by electronegative potential; relay electric-loss discharges; the contact disconnects, and stops power supply, and has realized the overvoltage power-off protection.
When output voltage recovers just often, over-voltage detection circuit does not have the overvoltage signal, comparator circuit output noble potential, the diode circuit door is closed, and through the time-delay process of a capacitance-resistance charging, the on-off circuit upset resets, the output electronegative potential, relay line bag gets electric work, and the closed power supply of its normally opened contact realizes its delayed startup.Start power supply fast as need, as long as press the delay time selector switch.
The utility model has been owing to adopted technique scheme, thereby has simple in structurely, and the voltage scope of application is wide, stability and reliability good, and energy-conservation of consumption reduction obvious results characteristics are comparatively desirable low-power consumption family expenses automatic Regulation protective device at present in fact.
Accompanying drawing is an embodiment electrical schematic diagram of the present utility model
Present embodiment low power consumption integrated circuit automatic Regulation protector is output as 190V-242V at line voltage during for 140V-242V, and upper limit power-off protection voltage is not more than 245V, maximum output current 10A; delay time 5 minutes; outage sensitivity 0.1 second, control accuracy: (return difference), 1V.
To calculate under-voltage 5 hours of every day, can reduce loss 70% than present commercial like product, even to calculate under-voltage 10 hours of every day, consumption reduction still can reach more than 50%, energy-saving effect is very remarkable.
Below in conjunction with accompanying drawing 1 and embodiment the utility model is described further.
In Fig. 1 present embodiment
Rectification, voltage stabilizing, filtering circuit that the resistance-capacitance depressurization circuit that localpower is made up of capacitor C 5, resistance R 10 and bridge heap Qz, stabilivolt Vz1, capacitor C 4 are formed constitute.
Civil power provides the 24V DC voltage as localpower through resistance-capacitance depressurization, rectification, filtering, voltage stabilizing, and by 24V voltage through R3 current limliting, the voltage stabilizing of Vz2 secondary reference voltage as each comparator circuit.
Under-voltage sampling detects comparator circuit and is made up of commutator tube D1, dropping resistor R1, sampling adjustable resistance W1, comparator circuit A1.
One termination civil power phase line of under-voltage sampling testing circuit, another termination localpower negative terminal, the positive input of A1 links to each other with the adjustable end of W1, and its reverse input end connects reference potential.For guaranteeing the relatively stable of sampled signal, the W1 two ends also are connected to filter capacitor C1.
Civil power obtains the under-voltage signal of variation through half-wave drag flow, step-down on sample resistance, with relatively back output of reference voltage.
Under-voltage ON-OFF control circuit is made up of switch triode BG1 and relay 1J.
The base stage of BG1 connects the output terminal of A1 through resistance R 4, and 1J line bag is serially connected in the collector loop of BG1.For preventing that the inverse peak voltage that break-make moment line bag two ends produce from damaging BG1, line bag two ends also are connected to protection diode D5.
The pressure regulation network that boosts is made up of two groups of normally closed contact 1J1-2,1J2-2 and one group of normally opened contact 1J1-1 of self coupling step-up transformer T, 1J.
The termination civil power phase line of 1J1-1, the output terminal that boosts of the termination T of 1J1-2, the common port of two contacts is as the phase line output terminal of this network; The input end of the termination T of 1J2-2, another termination civil power phase line, the public termination civil power of the input and output of T zero line.At the output terminal of T, also be connected to this network insertion work display circuit that current-limiting resistance R11 and Yellow luminous device IED4 form.
Under the normal condition, A1 exports noble potential, the BG1 conducting, and 1J adhesive work, 1J1-2,1J2-2 disconnect, the 1J1-1 closure, not cut-in operation of T, utility grid is directly exported by 1J1-1.
When line voltage was lower than normal value, A1 normal phase input end current potential was lower than inverting input, output low level, BG1 ends, 1J line bag dead electricity discharges, and 1J1-1 transfers disconnection to by closure, and 1J1-2,1J2-2 transfer closure to by disconnection, line voltage inserts the input end of autotransformer T by 1J2-2, boost after 1J1-2 output has realized the pressure regulation of boosting, simultaneously, IED4 lights, and represents to boost pressure regulation network insertion work.
The overvoltage sampling detects comparator circuit and is made up of drag flow diode D2, dropping resistor R2, sampling adjustable resistance W2 and comparator circuit A2.
The boost output terminal of pressure regulation network of one termination of over-voltage detection circuit, another termination localpower negative terminal, relatively stable for guaranteeing sampling voltage, the W2 two ends are connected to filter capacitor C2.
Overvoltage comparison circuit A2 takes anti-phase input mode, the adjustable end of its reverse termination W2, and normal phase input end connects reference potential.The output terminal of this circuit and localpower anode also are connected to the overvoltage display circuit that resistance R 5 and emitting red light device IED1 form.
Boost pressure regulation network output voltage through half-wave drag flow, step-down, on W2, obtain the overvoltage signal of variation, through A2 relatively after output.
The overpressure switch control circuit is made up of master switch integrated circuit and the rc-delay circuit R7, the C3 that link with it, relay 2J and the voltage table V etc. that diode D3, A3A4 compose in parallel.
The negative terminal of D3 connects the output terminal of A2, and in fact the inverting input of positive termination main control integrated circuit, and link to each other with the contact of R7, C3 has constituted one and had a regularly monostable switch circuit of link by what low level triggered, and rc-delay circuit is controlled reset time.At the R7 two ends, also be connected to the fast start circuit of forming by button switch K and R6.
The output terminal of one termination main control integrated circuit of 2J line bag, the anode of another termination localpower, line bag two ends are connected to the normal power supply work display circuit and the protection diode D4 of current-limiting resistance R8 and green light emitting device IED2 composition.The output terminal of this switch control integrated circuit and localpower negative terminal also are connected to outage or the time-delay status display circuit that R9, orange luminescence device IED3 form.Normally opened contact 2J1-1 is serially connected in the phase line loop of power supply output, the boost output terminal of pressure regulation network of one termination, and the other end is exported through fuse RD as the power supply phase line output terminal of this protector.
This output terminal also is connected to the voltage table display circuit.
Under the normal condition, A2 exports noble potential, master switch circuit output electronegative potential, 2J work, the closed power supply of 2J1-1.
When output voltage is higher than normal value; the overvoltage sample circuit will be examined the overvoltage signal voltage of picking up variation and compare with reference voltage; make A2 output electronegative potential, D3 conducting, C3 discharge; the upset of master switch circuit; its output becomes noble potential by electronegative potential, and the 2J dead electricity discharges, and 2J1-1 disconnects; stop power supply, realized the overvoltage power-off protection.Simultaneously, IED1, IED3 light, expression overvoltage, outage.
When output voltage recovers just often, over-voltage detection circuit does not have the overvoltage signal, and the A2 inverting input is lower than forward end, the output noble potential, and D3 closes.At this moment, IED1 extinguishes (have only IED3 bright), and expression enters the time-delay state.Through the time-delay process of a capacitance-resistance charging, the upset of master switch integrated circuit resets output low level.2J line bag gets electric work, and the closed power supply of 2J1-1 has realized the delayed startup power supply.At this moment, IED3 extinguishes, and IED2 lights.
Start fast as need, as long as click quick startup power supply button switch K.
Because when line voltage is normal and too high, this protector boosts, and auto-transformer does not insert network operation in the pressure regulation network, this just greatly reduces open circuit loss, especially for the pressure regulation protector of this high-power output or non-whole day voltage area on the low side all, power savings is particularly remarkable; On the other hand; also avoided the problem of damaging because of the easy overload of transformer self structure restriction under the high voltage; make this protector when 380V phase voltage contingency is scurried into electrical network, still can realize reliable power-off protection to electrical appliance; and can tolerate 5-10 minute impact and be unlikely damage, have higher reliability and practical characteristics.
Claims (5)
1, a kind of novel ultra-low power consumption integrated circuit automatic Regulation protector, form by localpower, the pressure regulation unit that boosts, Overvoltage protecting unit and each duty display circuit, its pressure regulation unit that boosts comprises that under-voltage sampling detects comparator circuit, under-voltage ON-OFF control circuit and the pressure regulation network that boosts, and Overvoltage protecting unit comprises that the overvoltage sampling detects comparator circuit and the overpressure switch control circuit that is attached thereto etc.; It is characterized in that describedly owing, overvoltage sampling detection signal obtained through the diode rectification step-down by the input end and the pressure regulation network output phase line of power supply respectively, the adjustable end of two sample resistances links to each other with separately comparator circuit respectively; Described under-voltage ON-OFF control circuit repeat circuit is serially connected in the switch triode collector loop as master switch, the common port of its a pair of normally-open normally-close contact is as the pressure regulation network electric power phase line output terminal that boosts, another termination civil power phase line of normally opened contact, another termination autotransformer of normally closed contact output terminal that boosts, another group normally closed contact is serially connected in civil power phase line and autotransformer input end, and the input and output common port of autotransformer links to each other with the civil power zero line; Described overpressure switch control circuit comprises the master switch circuit with capacitance-resistance timing circuit of diode gate circuit, two integrated circuit output in parallel and is connected across this on-off circuit output terminal and the relay of localpower anode etc., the output terminal of its normally opened contact one termination pressure regulation network, the other end is exported through fuse.
2, according to claim 1 described ultra-low power consumption integrated circuit automatic Regulation protector, it is characterized in that the output terminal of power supply is connected to the voltage table display circuit.
3,, it is characterized in that the single-circuit transformer output terminal is connected to the boost network cut-in operation state demonstration that luminescent device is formed according to claim 1 described ultra-low power consumption integrated circuit automatic Regulation protector.
4,, it is characterized in that being connected in the Overvoltage protecting unit circuit operate as normal that luminescent device is formed, time-delay or overvoltage outage duty display circuit according to claim 1 described ultra-low power consumption integrated circuit automatic Regulation protector.
5, according to claim 1 described ultra-low power consumption integrated circuit automatic Regulation protector, its feature also is to be connected in the capacitance-resistance timing circuit quick startup power supply selector switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94204855 CN2196792Y (en) | 1994-03-16 | 1994-03-16 | Automatic voltage-regulating protector for super-low power-consumption integreted circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94204855 CN2196792Y (en) | 1994-03-16 | 1994-03-16 | Automatic voltage-regulating protector for super-low power-consumption integreted circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2196792Y true CN2196792Y (en) | 1995-05-10 |
Family
ID=33823959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94204855 Expired - Fee Related CN2196792Y (en) | 1994-03-16 | 1994-03-16 | Automatic voltage-regulating protector for super-low power-consumption integreted circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2196792Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100459350C (en) * | 2005-03-09 | 2009-02-04 | 欧姆龙株式会社 | Undervoltage warning method, undervoltage warning circuit and switching power supply |
| CN101685977A (en) * | 2008-09-25 | 2010-03-31 | 上海申瑞电力科技股份有限公司 | Power supply circuit for electric pole control mechanism |
| CN109407577A (en) * | 2018-09-30 | 2019-03-01 | 珠海格力电器股份有限公司 | Wake-up circuit, wake-up method and electric cooker |
| CN110165678A (en) * | 2019-06-25 | 2019-08-23 | 浙江矗立建筑装饰工程有限公司 | A kind of house supply voltage automatic regulating system |
-
1994
- 1994-03-16 CN CN 94204855 patent/CN2196792Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100459350C (en) * | 2005-03-09 | 2009-02-04 | 欧姆龙株式会社 | Undervoltage warning method, undervoltage warning circuit and switching power supply |
| CN101685977A (en) * | 2008-09-25 | 2010-03-31 | 上海申瑞电力科技股份有限公司 | Power supply circuit for electric pole control mechanism |
| CN109407577A (en) * | 2018-09-30 | 2019-03-01 | 珠海格力电器股份有限公司 | Wake-up circuit, wake-up method and electric cooker |
| CN110165678A (en) * | 2019-06-25 | 2019-08-23 | 浙江矗立建筑装饰工程有限公司 | A kind of house supply voltage automatic regulating system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |