CN103269064A - Zero-power-consumption releasing circuit of anti-interference capacitor at AC end of switching power supply - Google Patents
Zero-power-consumption releasing circuit of anti-interference capacitor at AC end of switching power supply Download PDFInfo
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- CN103269064A CN103269064A CN2013101882461A CN201310188246A CN103269064A CN 103269064 A CN103269064 A CN 103269064A CN 2013101882461 A CN2013101882461 A CN 2013101882461A CN 201310188246 A CN201310188246 A CN 201310188246A CN 103269064 A CN103269064 A CN 103269064A
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- 239000003990 capacitor Substances 0.000 title claims abstract description 28
- 230000008878 coupling Effects 0.000 claims description 12
- 238000010168 coupling process Methods 0.000 claims description 12
- 238000005859 coupling reaction Methods 0.000 claims description 12
- 230000000087 stabilizing effect Effects 0.000 claims description 6
- 239000003381 stabilizer Substances 0.000 description 4
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- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
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Abstract
The invention discloses a zero-power-consumption releasing circuit of an anti-interference capacitor at the AC end of a switching power supply and relates to the technical field of switching power supplies. The zero-power-consumption releasing circuit of the anti-interference capacitor at the AC end of the switching power supply comprises a first port, a second port, a third port and a fourth port, wherein one end of the first port is connected to a +12V power supply at the output end of the switching power supply, one end of the second port is connected to the negative electrode of the output end of the switching power supply, the other end of the second port is connected with the ground, and one end of the third port and one end of the fourth port are connected to two ends of the capacitor C connected with the AC220V input end of the switching power supply in parallel respectively. The zero-power-consumption releasing circuit of the anti-interference capacitor at the AC end of the switching power supply has the advantages of being simple, reasonable in design, and capable of achieving zero power consumption after the switching power supply is powered off and saving power resources.
Description
Technical field
The present invention relates to the switch power technology field, be specifically related to anti-interference capacitor zero-power release circuit on a kind of Switching Power Supply AC end.
Background technology
Switching Power Supply when design in order to reduce High-frequency Interference, in the AC of Switching Power Supply current supply circuit, be parallel with anti-interference capacitor C(as shown in Figure 1), but shunt capacitance on AC, because electric capacity has the effect of discharging and recharging, in Switching Power Supply work, as pulling out the 220V plug of Switching Power Supply suddenly, can have 220V voltage on the electric capacity of parallel connection on the AC voltage.For safety, prevent from artificially touching the plug two ends and shocked by electricity, so can the necessarily discharge resistance of resistance value in parallel at the two ends of electric capacity.After 220V voltage disconnects, spark, prevent the certain power loss, this power loss is generally about several watts of zero points, but as long as this loss is the AC220V power connection 220V voltage of Switching Power Supply, I am in standby or open state the electronic product no matter Switching Power Supply is given altogether, and this power loss can produce always, and so long-time power consumption is unfavorable for energy-conservation.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of circuit simple, and the anti-interference capacitor zero-power discharges circuit on the Switching Power Supply AC end of good reliability.
Technical problem to be solved by this invention realizes by the following technical solutions:
The anti-interference capacitor zero-power discharges circuit on a kind of Switching Power Supply AC end, this circuit is divided into first port, second port, the 3rd port and the 4th port, one end of described first port is connected on Switching Power Supply output+12V power supply, one end of described second port connects on the Switching Power Supply negative pole of output end, other end ground connection, one end of described the 3rd port and the 4th port is connected to capacitor C two ends in parallel on the AC220V input of Switching Power Supply, be in series with voltage stabilizing didoe ZD1 on the other end of described first port, second resistance R 2, the first diode D1 and first capacitor C 1, one end ground connection of described first capacitor C 1, be parallel with the 3rd resistance R 3 on the circuit between described voltage stabilizing didoe ZD1 and second resistance R 2, one end ground connection of described the 3rd resistance R 3, be parallel with second capacitor C 2 and first resistance R 1 on the circuit between described second resistance R 2 and the first diode D1, one end ground connection of described second capacitor C 2, one end of described first resistance is connected to the base stage of the first triode Q1, the emitter of the described first triode Q1 is connected in parallel on the circuit between the first diode D1 and first capacitor C 1, the collector electrode of described first triode is connected with the first light coupling relay IC1 through the 4th resistance R 4, and the other end of described the 3rd port and the 4th port is connected on the two ends of the inner photo resistance of the first light coupling relay IC1 respectively.
Described the 4th resistance R 4 is connected on the negative pole of light-emitting diode of the first light coupling relay IC1 inside, the plus earth of the described first light coupling relay IC1 interior light emitting diodes.
The invention has the beneficial effects as follows: circuit of the present invention is simple, and is reasonable in design, can reach Switching Power Supply outage after, reach zero-power, the conservation of power resource.
Description of drawings
Fig. 1 is the switching power circuit schematic diagram;
Fig. 2 is circuit theory diagrams of the present invention.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
As Fig. 1, shown in Figure 2, the anti-interference capacitor zero-power discharges circuit on a kind of Switching Power Supply AC end, this circuit is divided into first port one, second port 2, the 3rd port 3 and the 4th port 4, one end of first port one is connected on Switching Power Supply output+12V power supply, one end of second port 2 connects on the Switching Power Supply negative pole of output end, other end ground connection, one end of the 3rd port 3 and the 4th port 4 is connected to capacitor C two ends in parallel on the AC220V input of Switching Power Supply, be in series with voltage stabilizing didoe ZD1 on the other end of first port one, second resistance R 2, the first diode D1 and first capacitor C 1, one end ground connection of first capacitor C 1, be parallel with the 3rd resistance R 3 on the circuit between described voltage stabilizing didoe ZD1 and second resistance R 2, one end ground connection of the 3rd resistance R 3, be parallel with second capacitor C 2 and first resistance R 1 on the circuit between second resistance R 2 and the first diode D1, one end ground connection of second capacitor C 2, one end of first resistance is connected to the base stage of the first triode Q1, the emitter of the first triode Q1 is connected in parallel on the circuit between the first diode D1 and first capacitor C 1, the collector electrode of first triode is connected with the first light coupling relay IC1 through the 4th resistance R 4, and the other end of the 3rd port 3 and the 4th port 4 is connected on the two ends of the inner photo resistance of the first light coupling relay IC1 respectively.The 4th resistance R 4 is connected on the negative pole of light-emitting diode of the first light coupling relay IC1 inside, the plus earth of the first light coupling relay IC1 interior light emitting diodes.
In this circuit, at first 1 end is connected to AC Switching Power Supply output+the 12V power supply on, 2 ends are connected on the AC Switching Power Supply negative pole of output end; 3 ends, 4 ends are connected to the electric capacity two ends of the AC220V input parallel connection of AC Switching Power Supply.At this moment, at first the 220V attaching plug with the AC Switching Power Supply inserts in the 220V power supply, AC Switching Power Supply work this moment, the output of Switching Power Supply will have the voltage output of several roads, wherein one the tunnel export 12V voltage, through the ZD1 voltage-stabiliser tube, 12V voltage makes the soft breakdown of ZD1 voltage-stabiliser tube, the voltage of output charges resistance R 2 after resistance R 3 dividing potential drops to capacitor C 2; Charge to capacitor C 1 through diode D1 simultaneously, because C1 electric capacity and C2 electric capacity are filled simultaneously, the Q1 triode is in cut-off state, Q1 transistor collector output low level, the luminous tube of IC1 optocoupler inside is not luminous, the photo resistance of IC1 optocoupler inside because of unglazed according to the time resistance be the infinity, IC1 optocoupler 3 pin, 4 pin are open-circuit condition, so lossless on the 220V power supply, reach zero loss.After the input 220V voltage on the Switching Power Supply is disconnected, voltage on the Switching Power Supply output can descend suddenly, this moment, the ZD1 voltage-stabiliser tube reduced because of voltage, and reduce at the anodal output voltage of ZD1 voltage-stabiliser tube, this moment, C2 electric capacity will be by R2 resistance, R3 resistance is to the ground discharge, make the conducting of Q1 triode, after the conducting of Q1 triode, but this moment, the D1 diode was because cathode voltage is lower than cathode voltage, be in cut-off state, C1 electric capacity with the emitter by the Q1 triode to collector electrode again through the light-emitting diode positive pole of R4 resistance to IC1 optocoupler inside, the light-emitting diode negative pole is to the ground discharge, make the luminous tube of IC1 optocoupler inside luminous, resistance was hundreds of ohm when the photo resistance of IC1 optocoupler inside had illumination, the photo resistance discharge of moment high voltage that the electric capacity of Switching Power Supply AC220V input is filled by IC1 optocoupler inside, reach the Switching Power Supply outage after, moment is discharged the institute of the anti-interference capacitor on Switching Power Supply 220V charging voltage safely.
More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (2)
1. the anti-interference capacitor zero-power discharges circuit on the Switching Power Supply AC end, it is characterized in that: this circuit is provided with first port, second port, the 3rd port and the 4th port, one end of described first port is connected on Switching Power Supply output+12V power supply, one end of described second port connects on the Switching Power Supply negative pole of output end, other end ground connection, one end of described the 3rd port and the 4th port is connected to electric capacity (C) two ends in parallel on the AC220V input of Switching Power Supply, be in series with voltage stabilizing didoe (ZD1) on the other end of described first port, second resistance (R2), first diode (D1) and first electric capacity (C1), one end ground connection of described first electric capacity (C1), be parallel with the 3rd resistance (R3) on the circuit between described voltage stabilizing didoe (ZD1) and second resistance (R2), one end ground connection of described the 3rd resistance (R3), be parallel with second electric capacity (C2) and first resistance (R1) on the circuit between described second resistance (R2) and first diode (D1), one end ground connection of described second electric capacity (C2), one end of described first resistance (R1) is connected to the base stage of first triode (Q1), the emitter of described first triode (Q1) is connected in parallel on the circuit between first diode (D1) and first electric capacity (C1), the collector electrode of described first triode (Q1) is connected with first light coupling relay (IC1) through the 4th resistance (R4), and the other end of described the 3rd port and the 4th port is connected on the two ends of the inner photo resistance of first light coupling relay (IC1) respectively.
2. the anti-interference capacitor zero-power discharges circuit on the Switching Power Supply AC end according to claim 1, it is characterized in that: described the 4th resistance (R4) is connected on the negative pole of the inner light-emitting diode of first light coupling relay (IC1), the plus earth of described first light coupling relay (IC1) interior light emitting diodes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310188246.1A CN103269064B (en) | 2013-05-20 | 2013-05-20 | Zero-power-consumption releasing circuit of anti-interference capacitor at AC end of switching power supply |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310188246.1A CN103269064B (en) | 2013-05-20 | 2013-05-20 | Zero-power-consumption releasing circuit of anti-interference capacitor at AC end of switching power supply |
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| CN103269064B CN103269064B (en) | 2015-05-06 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901672A (en) * | 2015-05-26 | 2015-09-09 | 刘举柱 | Zero power consumption touch switch module circuit |
| CN105207456A (en) * | 2015-10-09 | 2015-12-30 | 六安市同心畅能电子科技有限公司 | Zero-power-dissipation releasing circuit of anti-interference capacitor at AC end of switching power supply |
| CN110098604A (en) * | 2019-05-08 | 2019-08-06 | 上海松下微波炉有限公司 | A kind of discharge circuit, electric source filter circuit, power-supplying circuit and household electrical appliance |
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| US6191504B1 (en) * | 1999-09-22 | 2001-02-20 | Sony Corporation Of Japan | System and method for reduced standby power consumption in a display device |
| CN101256394A (en) * | 2008-03-26 | 2008-09-03 | 广州蓝朝电子科技有限公司 | Standby control apparatus with certain nought power consumption |
| CN201234208Y (en) * | 2008-07-02 | 2009-05-06 | 东南大学 | Switch power supply for chain type convertor power unit controller |
| CN201449443U (en) * | 2009-05-27 | 2010-05-05 | 无锡和晶科技股份有限公司 | Power-off detection circuit of isolated fly-back switch power supply |
| CN203352156U (en) * | 2013-05-20 | 2013-12-18 | 刘举柱 | Zero power consumption release circuit for anti-interference capacitors on switching power supply AC end |
-
2013
- 2013-05-20 CN CN201310188246.1A patent/CN103269064B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6191504B1 (en) * | 1999-09-22 | 2001-02-20 | Sony Corporation Of Japan | System and method for reduced standby power consumption in a display device |
| CN101256394A (en) * | 2008-03-26 | 2008-09-03 | 广州蓝朝电子科技有限公司 | Standby control apparatus with certain nought power consumption |
| CN201234208Y (en) * | 2008-07-02 | 2009-05-06 | 东南大学 | Switch power supply for chain type convertor power unit controller |
| CN201449443U (en) * | 2009-05-27 | 2010-05-05 | 无锡和晶科技股份有限公司 | Power-off detection circuit of isolated fly-back switch power supply |
| CN203352156U (en) * | 2013-05-20 | 2013-12-18 | 刘举柱 | Zero power consumption release circuit for anti-interference capacitors on switching power supply AC end |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901672A (en) * | 2015-05-26 | 2015-09-09 | 刘举柱 | Zero power consumption touch switch module circuit |
| CN104901672B (en) * | 2015-05-26 | 2017-09-29 | 六安市同心畅能电子科技有限公司 | Zero-power soft-touch control modular circuit |
| CN105207456A (en) * | 2015-10-09 | 2015-12-30 | 六安市同心畅能电子科技有限公司 | Zero-power-dissipation releasing circuit of anti-interference capacitor at AC end of switching power supply |
| CN105207456B (en) * | 2015-10-09 | 2018-03-09 | 六安市同心畅能电子科技有限公司 | Anti-interference capacitor zero-power release circuit on Switching Power Supply AC ends |
| CN110098604A (en) * | 2019-05-08 | 2019-08-06 | 上海松下微波炉有限公司 | A kind of discharge circuit, electric source filter circuit, power-supplying circuit and household electrical appliance |
| CN110098604B (en) * | 2019-05-08 | 2021-06-29 | 上海松下微波炉有限公司 | Discharge circuit, power filter circuit, power supply circuit and household appliance |
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| CN103269064B (en) | 2015-05-06 |
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Inventor after: Sun Yong Inventor before: Liu Juzhu |
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Effective date of registration: 20170605 Address after: North Park Economic Development Zone in the South China Sea Road 528000 Guangdong city of Foshan province No. 7 by a workshop Patentee after: Foshan golden way Electronic Technology Co., Ltd. Address before: 232200 Anhui city of Lu'an province Shouxian County Cha An Zhen Yu Gang Cun Qi Fang Group Patentee before: Liu Juzhu |
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