CN204360258U - Reduce the power circuit of stand-by power consumption - Google Patents
Reduce the power circuit of stand-by power consumption Download PDFInfo
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- CN204360258U CN204360258U CN201420822887.8U CN201420822887U CN204360258U CN 204360258 U CN204360258 U CN 204360258U CN 201420822887 U CN201420822887 U CN 201420822887U CN 204360258 U CN204360258 U CN 204360258U
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- resistance
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- actuating switch
- power consumption
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Abstract
The purpose of this utility model is to provide a kind of power circuit reducing stand-by power consumption, comprise feedback and detect resistance, the first end that feedback detects resistance connects output terminal, feedback detects the second end ground connection of resistance, also comprise actuating switch, expansion feedback detects resistance and control signal receiving element, wherein, the first end that expansion feedback detects resistance connects actuating switch, expansion feedback detects the second end ground connection of resistance, the first end that actuating switch detects resistance with feedback is connected, and control signal receiving element is connected with actuating switch.The utility model reduces the power circuit of stand-by power consumption, solves in prior art and reduces the problem that stand-by power consumption cost is higher, circuit is complicated, element is more.
Description
Technical field
The utility model relates to a kind of power circuit, is specifically related to a kind of power circuit reducing stand-by power consumption.
Background technology
Along with energy-conserving and environment-protective become common recognition, low standby power loss technology is also subject to the attention of consumer.It is reported that the electric energy that electric equipment products consume when standby has become a kind of serious energy dissipation.Find have the household electrical appliance of idle function to have in a urban family and more than 10 plant nearly according to the investigation of Chinese CECP, every monthly average stand-by power consumption is between 15-30 watt, and this numeral accounts for about 10% of home electrical consumption.That is, inside the electricity charge that every month pays, produce when having one one-tenth to be standby, so reducing stand-by power consumption can be user's cost saving, also respond the call of national environmental protection.
At present, the feedback of prior art standby power circuit detects resistance and fixes, and then in electrical equipment, the output voltage of stand-by circuit is fixed.As shown in Figure 1, standby power circuit comprises output end vo ut, optocoupler OC, voltage stabilizer VR, the first feedback detects resistance R2, the second feedback detects resistance R4, current-limiting resistance R1, negative feedback resistor R3 and electric capacity C1, wherein, the first end of current-limiting resistance R1 connects optocoupler OC, and second end of current-limiting resistance R1 connects output end vo ut; The first end that first feedback detects resistance R2 connects output end vo ut, and the second end that the first feedback detects resistance R2 connects the first end that the second feedback detects resistance R4; Second feedback detects the second end ground connection of resistance R4; The first end of voltage stabilizer VR connects optocoupler OC, and second end of voltage stabilizer VR is connected to the first feedback and detects between second end of resistance R2 and the first end of the second feedback detection resistance R4; Second end of negative feedback resistor R3 is connected with the first end of electric capacity C1, the first end of negative feedback resistor R3 is connected between the first end of voltage stabilizer VR and optocoupler OC, and second end of electric capacity C1 is connected to the first feedback and detects between second end of resistance R2 and the first end of the second feedback detection resistance R4; Under start and holding state, output voltage is all detect resistance R2 and second feedback detection resistance R4 common feedback by the first feedback, therefore its output voltage is fixed.Above-mentioned lifted prior art example comprises two feedbacks and detects resistance, also there is the situation of and multiple feedback detection resistance in prior art.In order to reach the object reducing stand-by power consumption, adopt synchronous rectification by exporting or select the modes such as low-impedance switching tube, but it is higher to there is cost, circuit is complicated, the problem that element increases.
Utility model content
The purpose of this utility model is to provide a kind of power circuit reducing stand-by power consumption, solves in prior art and reduces the problem that stand-by power consumption cost is higher, circuit is complicated, element is more.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of power circuit reducing stand-by power consumption, comprise feedback and detect resistance, the first end that feedback detects resistance connects output terminal, feedback detects the second end ground connection of resistance, also comprises actuating switch, expansion feedback detects resistance and control signal receiving element, wherein, the first end that expansion feedback detects resistance connects actuating switch, expansion feedback detects the second end ground connection of resistance, and the first end that actuating switch detects resistance with feedback is connected, and control signal receiving element is connected with actuating switch;
Preferably, also comprise electric capacity, the first end of electric capacity connects actuating switch, the second end ground connection of electric capacity;
Preferably, described electric capacity is filter capacitor;
Preferably, also comprise the first resistance, described first resistance is connected between actuating switch and control signal receiving element;
Preferably, also comprise the second resistance, between the first end that the first end of described second resistance is connected to the first resistance and actuating switch, the second end ground connection of the second resistance;
Preferably, described expansion feedback detection resistance comprises more than one or one resistance;
Preferably, described actuating switch is NPN triode or nmos pass transistor.
The power circuit of the reduction stand-by power consumption that the utility model provides, a road is only had to export, by arranging actuating switch, and controlled opening of actuating switch by control signal receiving element reception remote control signal and closed, thus adjustment feedback detects resistance, and then reduction output voltage, because output current is constant, output power reduces, and realizes reducing stand-by power consumption, to reach minimum power consumption, cost is low, element is few, circuit is simple.Because output voltage reduces at holding state, feed back to primary side, the voltage of switching tube also reduces, thus decreases the loss of primary switch pipe.
Accompanying drawing explanation
Fig. 1 is prior art standby power circuit;
Fig. 2 is the power circuit that the utility model reduces stand-by power consumption.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is further described.
As shown in Figure 2, the utility model reduces the power circuit of standby energy consumption, on the basis of prior art circuits shown in Fig. 1, increase actuating switch Q1, expansion feedback detects resistance R5, remote pilot receiving element SR, electric capacity C2, first resistance R6 and the second resistance R7, wherein, first feedback that is connected to actuating switch Q1 detects between second end of resistance R2 and the first end of the second feedback detection resistance R4, the first end that expansion feedback detects resistance R5 connects actuating switch Q1, expansion feedback detects the second end ground connection of resistance R5, the first end of electric capacity C2 connects actuating switch Q1, the second end ground connection of electric capacity C2, the first end of the first resistance R6 connects actuating switch Q1, the second end connection control signal receiving element SR of the first resistance R6, between the first end that the first end of the second resistance R7 is connected to the first resistance R6 and actuating switch Q1, the second end ground connection of the second resistance R7.
In the present embodiment, electric capacity C2 is filter capacitor, arranges electric capacity C2, with alternating component unwanted in filtering direct supply; First resistance R6 and the second resistance R7 is set in the present embodiment, can increases and decreases by practical power circuit requirements, to carry out shunting, dividing potential drop; In the present embodiment, expansion feedback detects resistance R5, also can arrange more than one or one resistance by actual voltage value, to be applicable to the power circuit of different electrical equipment; The preferred NPN triode of actuating switch Q1 or nmos pass transistor, under the control of remote control signal SR, the conducting of realizing circuit is with closed.
During start, remote control signal sends, and actuating switch Q1 receives remote control signal and conducting, and output voltage detects resistance R2 by the first feedback, the second feedback detects resistance R4 and expansion feedback detects resistance R5 and jointly feeds back; Time standby, actuating switch Q1 closes, and now output voltage is fed back by the first feedback detection resistance R2 and second feedback detection resistance R4; And then realize start, standby time voltage conversion.Select resistance sizes according to actual needs, calculate output voltage, known standby time the output voltage of output voltage when being less than start.
For standby voltage 12V, voltage during normal work is 12V, selecting the first feedback to detect resistance R2 is 8.85K, R4 is 2.95K, and it is 12.1K that expansion feedback detects resistance R5, and the Rdson of actuating switch Q1 is ohm rank, very little relative to the K level of R2, R4 and R5, negligible, arrange P point, the voltage of voltage stabilizer voltage stabilizing P point is 2.5V.During start, remote control signal makes actuating switch Q1 conducting, now output voltage is detected resistance R4 by the first feedback detection resistance R2, the second feedback and is expanded feedback detection resistance R5 and jointly feeds back, calculate output voltage, Vout=2.5/ (R4//R5) × (R4//R5+R2)=12V; Time standby, remote control signal does not send, and actuating switch Q1 is in non-conducting, and now output voltage is fed back by the first feedback detection resistance R2 and second feedback detection resistance R4, calculates output voltage, Vout=2.5/R4 × (R4+R2)=10V.It can thus be appreciated that the utility model power circuit can reduce output voltage during electric appliance standby.
The power circuit that the utility model reduces stand-by power consumption can be applied in a television set, by controlling actuating switch Q1, low-voltage output time standby, reducing stand-by power consumption, recovering the output voltage of GPS survey, meet normal demand after start.Control feedback resistor network with remote control signal, thus realize the change of output voltage.In like manner, the power circuit of the utility model reduction stand-by power consumption can also be applied in the power circuit of other electrical equipment to realize reducing stand-by power consumption.
The power circuit that the utility model reduces stand-by power consumption also can use with traditional low standby power loss scheme is parallel, thus realizes lower stand-by power consumption.
Set forth a lot of detail in the above description so that fully understand the utility model.But above description is only preferred embodiment of the present utility model, the utility model can be much different from alternate manner described here to implement, and therefore the utility model is not by the disclosed concrete restriction implemented above.Any those skilled in the art are not departing under technical solutions of the utility model ambit simultaneously, the Method and Technology content of above-mentioned announcement all can be utilized to make many possible variations and modification to technical solutions of the utility model, or be revised as the Equivalent embodiments of equivalent variations.Every content not departing from technical solutions of the utility model, according to technical spirit of the present utility model to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belongs in the scope of technical solutions of the utility model protection.
Claims (7)
1. one kind is reduced the power circuit of stand-by power consumption, comprise feedback and detect resistance, the first end that feedback detects resistance connects output terminal, feedback detects the second end ground connection of resistance, it is characterized in that, also comprise actuating switch, expansion feedback detects resistance and control signal receiving element, wherein, the first end that expansion feedback detects resistance connects actuating switch, expansion feedback detects the second end ground connection of resistance, the first end that actuating switch detects resistance with feedback is connected, and control signal receiving element is connected with actuating switch.
2. the power circuit of reduction stand-by power consumption according to claim 1, is characterized in that, also comprise electric capacity,
The first end of electric capacity connects actuating switch, the second end ground connection of electric capacity.
3. the power circuit of reduction stand-by power consumption according to claim 2, is characterized in that, described electric capacity is filter capacitor.
4. the power circuit of reduction stand-by power consumption according to claim 1, is characterized in that, also comprises the first resistance, and described first resistance is connected between actuating switch and control signal receiving element.
5. the power circuit of reduction stand-by power consumption according to claim 4, is characterized in that, also comprises the second resistance, between the first end that the first end of described second resistance is connected to the first resistance and actuating switch, and the second end ground connection of the second resistance.
6. the power circuit of reduction stand-by power consumption according to claim 1, is characterized in that, described expansion feedback detects resistance and comprises more than one or one resistance.
7. the power circuit of reduction stand-by power consumption according to claim 1, is characterized in that, described actuating switch is NPN triode or nmos pass transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420822887.8U CN204360258U (en) | 2014-12-23 | 2014-12-23 | Reduce the power circuit of stand-by power consumption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420822887.8U CN204360258U (en) | 2014-12-23 | 2014-12-23 | Reduce the power circuit of stand-by power consumption |
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| Publication Number | Publication Date |
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| CN204360258U true CN204360258U (en) | 2015-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420822887.8U Expired - Fee Related CN204360258U (en) | 2014-12-23 | 2014-12-23 | Reduce the power circuit of stand-by power consumption |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108268081A (en) * | 2018-02-06 | 2018-07-10 | 江苏华存电子科技有限公司 | A kind of attenuating out-put supply falls magnitude circuit |
| CN112865491A (en) * | 2021-01-07 | 2021-05-28 | 珠海格力电器股份有限公司 | Switching power supply capable of reducing standby power consumption |
-
2014
- 2014-12-23 CN CN201420822887.8U patent/CN204360258U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108268081A (en) * | 2018-02-06 | 2018-07-10 | 江苏华存电子科技有限公司 | A kind of attenuating out-put supply falls magnitude circuit |
| CN112865491A (en) * | 2021-01-07 | 2021-05-28 | 珠海格力电器股份有限公司 | Switching power supply capable of reducing standby power consumption |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150527 Termination date: 20161223 |
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| CF01 | Termination of patent right due to non-payment of annual fee |