CN103269064B - 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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- CN103269064B CN103269064B CN201310188246.1A CN201310188246A CN103269064B CN 103269064 B CN103269064 B CN 103269064B CN 201310188246 A CN201310188246 A CN 201310188246A CN 103269064 B CN103269064 B CN 103269064B
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- 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 12
- 239000003381 stabilizer Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 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
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- 238000004134 energy conservation 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 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 design time in order to reduce High-frequency Interference, anti-interference capacitor C (as shown in Figure 1) is parallel with in the AC current supply circuit of Switching Power Supply, but shunt capacitance on AC, because electric capacity has discharge and recharge effect, when in Switching Power Supply work, as pulled out suddenly the 220V plug of Switching Power Supply, electric capacity in parallel on AC voltage can have 220V voltage.In order to safety, prevent artificially touching plug two ends and be electrically shocked, so understand the discharge resistance of certain resistance value in parallel at the two ends of electric capacity.After 220V voltage disconnects, spark, prevent certain power loss, this power loss is generally zero point about several watts, as long as but the AC220V power supply of this loss Switching Power Supply connects 220V voltage, the electronic product no matter Switching Power Supply is given altogether I be in standby or open state, this power loss can produce always, and so long-time power consumption is unfavorable for energy-conservation.
Summary of the invention
It is simple that technical problem to be solved by this invention is to provide a kind of circuit, anti-interference capacitor zero-power release 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:
Anti-interference capacitor zero-power release circuit on a kind of Switching Power Supply AC end, this circuit is divided into the first port, second port, 3rd port and the 4th port, one end of described first port is connected on+12V the power supply of switched power output, on one end connecting valve power output end negative pole of described second port, other end ground connection, one end of described 3rd port and the 4th port is connected to electric capacity C two ends in parallel on the AC220V input of Switching Power Supply, the other end of described first port is in series with voltage stabilizing didoe ZD1, second resistance R2, first diode D1 and the first electric capacity C1, the negative pole termination first end mouth of described voltage stabilizing didoe ZD1, one end of the positive pole termination second resistance R2 of voltage stabilizing didoe ZD1, the other end of the positive pole termination second resistance R2 of described first diode D1, one end of the negative pole termination first electric capacity C1 of described first diode D1, the other end ground connection of described first electric capacity C1, circuit between described voltage stabilizing didoe ZD1 and the second resistance R2 is parallel with the 3rd resistance R3, one end ground connection of described 3rd resistance R3, circuit between described second resistance R2 and the first diode D1 is parallel with the second electric capacity C2 and the first resistance R1, one end ground connection of described second electric capacity C2, one end of described first resistance is connected to the base stage of the first triode Q1, the emitter of described first triode Q1 is connected in parallel on the circuit between the first diode D1 and the first electric capacity C1, the collector electrode of described first triode is connected with the first light coupling relay IC1 through the 4th resistance R4, the other end of described 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 4th resistance R4 is connected on the positive pole of the light-emitting diode of the first light coupling relay IC1 inside, the minus earth of 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, reasonable in design, after can reaching Switching Power Supply power-off, reaches zero-power, conservation of power resource.
Accompanying drawing explanation
Fig. 1 is switching power circuit schematic diagram;
Fig. 2 is circuit theory diagrams of the present invention.
Embodiment
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the present invention further.
As Fig. 1, shown in Fig. 2, anti-interference capacitor zero-power release circuit on a kind of Switching Power Supply AC end, this circuit is divided into the first port, second port, 3rd port and the 4th port, one end of first port is connected on+12V the power supply of switched power output, on one end connecting valve power output end negative pole of the second port, other end ground connection, one end of 3rd port and the 4th port is connected to electric capacity C two ends in parallel on the AC220V input of Switching Power Supply, the other end of the first port is in series with voltage stabilizing didoe ZD1, second resistance R2, first diode D1 and the first electric capacity C1, the negative pole termination first end mouth of voltage stabilizing didoe ZD1, one end of the positive pole termination second resistance R2 of voltage stabilizing didoe ZD1, the other end of the positive pole termination second resistance R2 of the first diode D1, one end of the negative pole termination first electric capacity C1 of the first diode D1, the other end ground connection of the first electric capacity C1, circuit between voltage stabilizing didoe ZD1 and the second resistance R2 is parallel with the 3rd resistance R3, one end ground connection of the 3rd resistance R3, circuit between second resistance R2 and the first diode D1 is parallel with the second electric capacity C2 and the first resistance R1, one end ground connection of the second electric capacity C2, 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 the first electric capacity C1, the collector electrode of the first triode is connected with the first light coupling relay IC1 through the 4th resistance R4, the other end of 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.4th resistance R4 is connected on the positive pole of the light-emitting diode of the first light coupling relay IC1 inside, the minus earth of described first light coupling relay IC1 interior light emitting diodes.
Operation principle:
In this circuit arrangement, be first connected on+12V the power supply of AC switched power output by 1 end, 2 ends are connected on AC switched power output negative pole; 3 ends, 4 ends are connected to the electric capacity two ends of the AC220V input parallel connection of AC Switching Power Supply.Now, first the 220V attaching plug of AC Switching Power Supply is inserted in 220V power supply, now AC Switching Power Supply work, You Ji road voltage exports by the output of Switching Power Supply, wherein a road exports 12V voltage, and through ZD1 voltage-stabiliser tube, 12V voltage makes the soft breakdown of ZD1 voltage-stabiliser tube, resistance R2, after resistance R3 dividing potential drop, charges to electric capacity C2 by the voltage exported; Charge to electric capacity C1 through diode D1 simultaneously, because C1 electric capacity and C2 electric capacity are filled electricity simultaneously, 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 time resistance be infinity, IC1 optocoupler 3 pin, 4 pin are open-circuit condition, so lossless on 220V power supply, reach zero loss.After the input 220V voltage in Switching Power Supply is disconnected, voltage on switched power output can decline suddenly, now ZD1 voltage-stabiliser tube reduces because of voltage, and reduce at the positive pole output voltage of ZD1 voltage-stabiliser tube, now C2 electric capacity will by R2 resistance, R3 resistance is to ground electric discharge, make Q1 triode ON, after Q1 triode ON, but now D1 diode is because cathode voltage is lower than cathode voltage, be in cut-off state, C1 electric capacity by by the emitter of Q1 triode to collector electrode again through the light-emitting diode positive pole of R4 resistance to IC1 optocoupler inside, light-emitting diode negative pole is to ground electric discharge, make the luminous tube of IC1 optocoupler inside luminous, when the photo resistance of IC1 optocoupler inside has illumination, resistance is hundreds of ohm, the high voltage filled by the electric capacity of Switching Power Supply AC220V input is instantaneously discharged by the photo resistance of IC1 optocoupler inside, after reaching Switching Power Supply power-off, instantaneously the anti-interference capacitor institute charging voltage on Switching Power Supply 220V is discharged safely.
More than show and describe general 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; what describe in above-described embodiment and 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.Application claims protection range is defined by appending claims and equivalent thereof.
Claims (2)
1. anti-interference capacitor zero-power release circuit on a Switching Power Supply AC end, it is characterized in that: this circuit is provided with the first port, second port, 3rd port and the 4th port, one end of described first port is connected on+12V the power supply of switched power output, on one end connecting valve power output end negative pole of described second port, other end ground connection, one end of described 3rd port and the 4th port is connected to electric capacity (C) two ends in parallel on the AC220V input of Switching Power Supply, the other end of described first port is in series with voltage stabilizing didoe (ZD1), second resistance (R2), first diode (D1) and the first electric capacity (C1), the negative pole termination first end mouth of described voltage stabilizing didoe (ZD1), one end of positive pole termination second resistance (R2) of voltage stabilizing didoe (ZD1), the other end of positive pole termination second resistance (R2) of described first diode (D1), one end of negative pole termination first electric capacity (C1) of described first diode (D1), the other end ground connection of described first electric capacity (C1), circuit between described voltage stabilizing didoe (ZD1) and the second resistance (R2) is parallel with the 3rd resistance (R3), one end ground connection of described 3rd resistance (R3), circuit between described second resistance (R2) and the first diode (D1) is parallel with the second electric capacity (C2) and the first resistance (R1), one end ground connection of described second electric capacity (C2), one end of described first resistance (R1) is connected to the base stage of the first triode (Q1), the emitter of described first triode (Q1) is connected in parallel on the circuit between the first diode (D1) and the first electric capacity (C1), the collector electrode of described first triode (Q1) is connected with the first light coupling relay (IC1) through the 4th resistance (R4), the other end of described 3rd port and the 4th port is connected on the two ends of the first light coupling relay (IC1) inner photo resistance respectively.
2. anti-interference capacitor zero-power release circuit on Switching Power Supply AC end according to claim 1, it is characterized in that: described 4th resistance (R4) is connected on the positive pole of the inner light-emitting diode of the first light coupling relay (IC1), the minus earth of described first light coupling relay (IC1) interior light emitting diodes.
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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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| 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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| CN103269064A CN103269064A (en) | 2013-08-28 |
| CN103269064B true CN103269064B (en) | 2015-05-06 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| 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 |
| 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 |
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 |
-
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 |
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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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