CN202837873U - Zero power standby circuit and corresponding electronic product - Google Patents
Zero power standby circuit and corresponding electronic product Download PDFInfo
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- CN202837873U CN202837873U CN 201220493627 CN201220493627U CN202837873U CN 202837873 U CN202837873 U CN 202837873U CN 201220493627 CN201220493627 CN 201220493627 CN 201220493627 U CN201220493627 U CN 201220493627U CN 202837873 U CN202837873 U CN 202837873U
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Abstract
The utility model belongs to the field of power electronics, and particularly relates to a zero power standby circuit and a corresponding electronic product. According to the zero power standby circuit and the corresponding electronic product provided by the utility model, the mains supply is changed into high-voltage current through being processed by a first rectifying filter unit when the mains supply is connected, and voltage outputted by a third winding of a transformer outputs DC voltage VCC through a second rectifying filter unit to provide power for the system after a power supply IC works normally. Voltage outputted by a second winding of the switch transformer controls input voltage of a zero-cross detection unit through an optocoupler IC1. When a standby function switch K1 is closed, the power supply IC comes into a self protection state, and stops working, the second winding and the third winding of the transformer both stop outputting voltage, the zero-cross detection unit also stops working, and the power consumed by the overall circuit is less than 5mW, thereby reaching the zero power standby requirement specified by the international standard.
Description
Technical field
The utility model belongs to field of power electronics, relates in particular to a kind of zero energy stand-by circuit and corresponding electronic product.
Background technology
In the prior art, general electronic product major part when not using all is to be in holding state.Generally speaking, use the standby power of the electronic product of linear transformer to be 2W; And use the standby power of the electronic product of Switching Power Supply to be 1W.Can not realize that both zero watt standby (stipulates according to international standard, the electronic product standby power is less than the zero watt standby of can being called of 5mW), also just can not satisfy modern society to the more and more higher efficiency of electronic product proposition and the requirement of environmental protection, solve above-mentioned technical matters therefore be badly in need of the circuit of a kind of zero energy standby of invention.
The utility model content
The purpose of this utility model is as electronic product provides a kind of zero energy stand-by circuit, can not realize zero watt standby, can not satisfy the technical matters that more and more higher efficiency and environmental protection etc. require with general electronic products in the solution prior art.
To achieve these goals, the technical solution adopted in the utility model is:
A kind of zero energy stand-by circuit, comprise the line with civil power L, the first rectification filtering unit that the N line links to each other successively, switch transformer with three windings, the Rectified alternating current of described switch transformer tertiary winding output is processed the second rectification filtering unit of rear output system operating voltage, be connected to output terminal and the resistance R between the ground 1 of described the second rectification filtering unit, and be connected to the second end of described switch transformer the first winding and the power supply IC between the ground, respectively by resistance R 2, idle function K switch 1 and arousal function K switch 2 that resistance R 3 links to each other with described power supply IC, as improvement, described circuit also comprises:
The isolated component that links to each other with the first end of described switch transformer the second winding; And be connected between described isolated component and civil power L line, the N line, can the output system operating voltage and the zero passage detection unit of civil power zero cross signal.
Particularly, described isolated component is optocoupler IC1.
Particularly, described zero passage detection unit comprises: resistance R 4, resistance R 5, resistance R 6 and optocoupler IC2; Described resistance R 4 is connected between the first output terminal of civil power L line and described optocoupler IC1, the second output terminal of the described optocoupler IC1 of input termination of described optocoupler IC2, the first output terminal of described optocoupler IC2 is respectively by described resistance R 5, resistance R 6 output system operating voltage and civil power zero cross signal, the second output termination civil power N line of described optocoupler IC2, the earth terminal ground connection of described optocoupler IC2.
More specifically, described the first rectification filtering unit comprises rectifier bridge BR1 and electrochemical capacitor E1; Two input ends of described rectifier bridge BR1 connect respectively L line, the N line of civil power, the earth terminal ground connection of described rectifier bridge BR1, the first end of described switch transformer the first winding of the output termination of described rectifier bridge BR1, described electrochemical capacitor E1 is connected between the output terminal and ground of described rectifier bridge BR1.
More specifically, described the second rectification filtering unit comprises diode D1 and electrochemical capacitor E2; The anode of described diode D1 connects the first end of the described switch transformer tertiary winding, and the negative electrode of described diode D1 is the output terminal of described the second rectification filtering unit, and described electrochemical capacitor E2 is connected between the negative electrode and ground of described diode D1.
Further, described idle function K switch 1 and arousal function K switch 2 comprise touch-switch, switch, microswitch and/or electronic switch.
The purpose of this utility model also is to provide a kind of electronic product, and described electronic product comprises micro-wave oven, electromagnetic oven, air conditioner and televisor, and described electronic product comprises the zero energy stand-by circuit of aforesaid arbitrary form.
The zero energy stand-by circuit that the utility model provides and corresponding electronic product, when connecting civil power, civil power is processed through the first rectification filtering unit and is become high voltage direct current, after the power supply IC normal operation voltage of transformer tertiary winding output through the second rectification filtering unit output dc voltage VCC to system power supply.The voltage of switch transformer the second winding output is through the input voltage of optocoupler IC1 control zero passage detection unit.When idle function K switch 1 closure; power supply IC enters the self-shield state; quit work; transformer the second winding and the tertiary winding all stop output voltage; the zero passage detection unit also quits work; this moment, the power of whole circuitry consumes was less than 5mW, had namely reached zero watt standby requirement of international standard regulation.
Description of drawings
Fig. 1 is the structure diagram of the zero energy stand-by circuit that provides of the utility model embodiment;
Fig. 2 is the example electronic devices and components figure of the zero energy stand-by circuit that provides of the utility model embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
Fig. 1 is the structure diagram of the zero energy stand-by circuit that provides of the utility model embodiment; For convenience of explanation, only show the content relevant with the present embodiment, as shown in the figure:
A kind of zero energy stand-by circuit, comprise the first rectification filtering unit 100, switch transformer 200, the second rectification filtering unit 300, power supply IC400, resistance R 1, resistance R 2, resistance R 3, idle function K switch 1 and arousal function K switch 2, as improvement, circuit also comprises: isolated component 500 and zero passage detection unit 600;
Wherein, two input ends of the first rectification filtering unit 100 respectively with civil power L line, the N line joins, switch transformer 200 has three groups of coils, it is respectively the first winding, the second winding and the tertiary winding, and the output terminal of the first termination first rectification filtering unit 100 of the first winding, the output terminal of input termination switch transformer 200 tertiary windings of the second rectification filtering unit 300, provide operating voltage to system after the Rectified alternating current of switch transformer 200 tertiary windings output processed, resistance R 1 is connected between the output terminal and ground of the second rectification filtering unit 300, power supply IC400 is connected between second end and ground of switch transformer 200 first windings, idle function K switch 1 one end ground connection, the other end links to each other with power supply IC400 by resistance R 2, arousal function K switch 2 one end ground connection, the other end links to each other with power supply IC400 by resistance R 3, the input end of isolated component 500 links to each other with the first end of switch transformer 200 second windings, two output terminals of isolated component 500 join with zero passage detection unit 600 respectively, and zero passage detection unit 600 is used for output system operating voltage and civil power zero cross signal.
When specific implementation, idle function K switch 1 and arousal function K switch 2 can be in touch-switch, switch, microswitch or the electronic switch one or both.The kind of above switch is example only, and is not used in the classification that limits switch.
Fig. 2 is the example electronic devices and components figure of the zero energy stand-by circuit that provides of the utility model embodiment; For convenience of explanation, only show the content relevant with the present embodiment, as shown in the figure:
The first rectification filtering unit 100 comprises rectifier bridge BR1 and electrochemical capacitor E1, two input ends of rectifier bridge BR1 connect respectively L line, the N line of civil power, the first end of the earth terminal ground connection of rectifier bridge BR1, output termination switch transformer 200 first windings, electrochemical capacitor E1 is connected between the output terminal and ground of rectifier bridge BR1;
The second rectification filtering unit 300 comprises diode D1 and electrochemical capacitor E2; The anode of diode D1 connects the first end of switch transformer 200 tertiary windings, and the negative electrode of diode D1 is the output terminal of the second rectification filtering unit 300, and electrochemical capacitor E2 is connected between the negative electrode and ground of diode D1;
Isolated component 500 is optocoupler IC1; Zero passage detection unit 600 comprises resistance R 4, resistance R 5, resistance R 6 and optocoupler IC2;
The first end of input termination switch transformer 200 second windings of optocoupler IC1, the first output terminal of optocoupler IC1 connects the L line of civil power by resistance R 4, the input end of the second output termination optocoupler IC2 of optocoupler IC1, the first output terminal of optocoupler IC2 passes through respectively resistance R 5 output dc voltage VCC to system power supply, by resistance R 6 output civil power zero cross signals, the second output termination civil power N line of optocoupler IC2, the earth terminal ground connection of optocoupler IC2.
The utility model embodiment also provides a kind of electronic product, described electronic product includes but not limited to micro-wave oven, electromagnetic oven, air conditioner or televisor etc., different from existing electronic product is that described electronic product comprises the various forms of zero energy stand-by circuits that embodiment provides in the preamble.
The zero energy stand-by circuit that the utility model provides and corresponding electronic product, when connecting civil power, civil power is processed through the first rectification filtering unit and is become high voltage direct current, to system power supply, the voltage of switch transformer the second winding output is through the input voltage of optocoupler IC1 control zero passage detection unit through the second rectification filtering unit output dc voltage VCC for the voltage of transformer tertiary winding output after the power supply IC normal operation.When idle function K switch 1 closure; power supply IC enters the self-shield state; quit work; transformer the second winding and the tertiary winding all stop output voltage; the zero passage detection unit also quits work; this moment, the power of whole circuitry consumes was less than 5mW, had namely reached zero watt standby requirement of international standard regulation.
The above only is preferred embodiment of the present utility model, not in order to limit the utility model, although with reference to previous embodiment the utility model has been carried out more detailed explanation, for a person skilled in the art, it still can be made amendment or part technical characterictic wherein is equal to replacement the technical scheme that aforementioned each embodiment puts down in writing.All any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (7)
1. zero energy stand-by circuit, comprise the line with civil power L, the first rectification filtering unit that the N line links to each other successively, switch transformer with three windings, the Rectified alternating current of described switch transformer tertiary winding output is processed the second rectification filtering unit of rear output system operating voltage, be connected to output terminal and the resistance R between the ground 1 of described the second rectification filtering unit, and be connected to the second end of described switch transformer the first winding and the power supply IC between the ground, respectively by resistance R 2, idle function K switch 1 and arousal function K switch 2 that resistance R 3 links to each other with described power supply IC, it is characterized in that, described circuit also comprises:
The isolated component that links to each other with the first end of described switch transformer the second winding;
Be connected between described isolated component and civil power L line, the N line, can the output system operating voltage and the zero passage detection unit of civil power zero cross signal.
2. zero energy stand-by circuit as claimed in claim 1 is characterized in that, described isolated component is optocoupler IC1.
3. zero energy stand-by circuit as claimed in claim 2 is characterized in that, described zero passage detection unit comprises: resistance R 4, resistance R 5, resistance R 6 and optocoupler IC2;
Described resistance R 4 is connected between the first output terminal of civil power L line and described optocoupler IC1, the second output terminal of the described optocoupler IC1 of input termination of described optocoupler IC2, the first output terminal of described optocoupler IC2 is respectively by described resistance R 5, resistance R 6 output system operating voltage and civil power zero cross signal, the second output termination civil power N line of described optocoupler IC2, the earth terminal ground connection of described optocoupler IC2.
4. such as each described zero energy stand-by circuit of claim 1-3, it is characterized in that, described the first rectification filtering unit comprises rectifier bridge BR1 and electrochemical capacitor E1;
Two input ends of described rectifier bridge BR1 connect respectively L line, the N line of civil power, the earth terminal ground connection of described rectifier bridge BR1, the first end of described switch transformer the first winding of the output termination of described rectifier bridge BR1, described electrochemical capacitor E1 is connected between the output terminal and ground of described rectifier bridge BR1.
5. zero energy stand-by circuit as claimed in claim 4 is characterized in that, described the second rectification filtering unit comprises diode D1 and electrochemical capacitor E2;
The anode of described diode D1 connects the first end of the described switch transformer tertiary winding, and the negative electrode of described diode D1 is the output terminal of described the second rectification filtering unit, and described electrochemical capacitor E2 is connected between the negative electrode and ground of described diode D1.
6. zero energy stand-by circuit as claimed in claim 5 is characterized in that, described idle function K switch 1 and arousal function K switch 2 comprise touch-switch, switch, microswitch and/or electronic switch.
7. an electronic product comprises micro-wave oven, electromagnetic oven, air conditioner and televisor, it is characterized in that, described electronic product comprises each described zero energy stand-by circuit such as claim 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220493627 CN202837873U (en) | 2012-09-25 | 2012-09-25 | Zero power standby circuit and corresponding electronic product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220493627 CN202837873U (en) | 2012-09-25 | 2012-09-25 | Zero power standby circuit and corresponding electronic product |
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| CN202837873U true CN202837873U (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220493627 Expired - Fee Related CN202837873U (en) | 2012-09-25 | 2012-09-25 | Zero power standby circuit and corresponding electronic product |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018152729A1 (en) * | 2017-02-23 | 2018-08-30 | 路晟（上海）科技有限公司 | Coupling voltage transforming system |
| CN109100557A (en) * | 2018-08-07 | 2018-12-28 | 六安市同心畅能电子科技有限公司 | Electronic active photoelectric current inductor |
-
2012
- 2012-09-25 CN CN 201220493627 patent/CN202837873U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018152729A1 (en) * | 2017-02-23 | 2018-08-30 | 路晟（上海）科技有限公司 | Coupling voltage transforming system |
| CN110313121A (en) * | 2017-02-23 | 2019-10-08 | 路晟（上海）科技有限公司 | A kind of coupling transformation system |
| CN109100557A (en) * | 2018-08-07 | 2018-12-28 | 六安市同心畅能电子科技有限公司 | Electronic active photoelectric current inductor |
| CN109100557B (en) * | 2018-08-07 | 2020-11-20 | 六安市同心畅能电子科技有限公司 | Electronic active photoelectric current transformer |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20180925 |
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| CF01 | Termination of patent right due to non-payment of annual fee |