CN203352156U - Zero power consumption release circuit for anti-interference capacitors on switching power supply AC end - Google Patents
Zero power consumption release circuit for anti-interference capacitors on switching power supply AC end Download PDFInfo
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- CN203352156U CN203352156U CN 201320276569 CN201320276569U CN203352156U CN 203352156 U CN203352156 U CN 203352156U CN 201320276569 CN201320276569 CN 201320276569 CN 201320276569 U CN201320276569 U CN 201320276569U CN 203352156 U CN203352156 U CN 203352156U
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Abstract
The utility model relates to the technical field of switching power supplies, particularly to a zero power consumption release circuit for anti-interference capacitors on a switching power supply AC end. The circuit in the application comprises a first port, a second port, a third port and a fourth port, one end of the first port is connected to a +12V power supply at an output end of a switching power supply, one end of the second port is connected with a negative electrode of the output end of the switching power supply, the other end is grounded, and one ends of the third port and the fourth port are respectively connected to two ends of a capacitor C connected in parallel on an AC220V input end of the switching power supply. The zero power consumption release circuit in the utility model is simple, and is reasonable in design, and can realize zero power consumption after the switching power supply is cut off, thereby saving electric power resources.
Description
Technical field
The utility model relates to the switch power technology field, is specifically related to anti-interference capacitor zero-power release circuit on a kind of Switching Power Supply AC end.
Background technology
Switching Power Supply in when design in order to reduce High-frequency Interference, be parallel with anti-interference capacitor C(as shown in Figure 1 in the AC of Switching Power Supply current supply circuit), but shunt capacitance on AC, because electric capacity has the effect of discharging and recharging, in Switching Power Supply work, as pulled out suddenly the 220V plug of Switching Power Supply, on AC voltage, on the electric capacity of parallel connection, can have 220V voltage.For safety, prevent from artificially touching the plug two ends and be electrically shocked, so can the necessarily discharge resistance of 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 in several watts of left and right at zero point, but as long as this loss is the AC220V power connection 220V voltage of Switching Power Supply, the electronic product no matter Switching Power Supply is given altogether I in standby or open state, this power loss can produce always, so long-time power consumption is unfavorable for energy-conservation.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of circuit simple, anti-interference capacitor zero-power release circuit on the Switching Power Supply AC end of good reliability.
Technical problem to be solved in the utility model 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, the second port, the 3rd port and the 4th port, one end of described the first port is connected on Switching Power Supply output+12V power supply, on one end connecting valve power output end negative pole of described the second port, 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 the first port, the second resistance R 2, the first diode D1 and the first capacitor C 1, one end ground connection of described the first capacitor C 1, be parallel with the 3rd resistance R 3 on circuit between described voltage stabilizing didoe ZD1 and the second resistance R 2, one end ground connection of described the 3rd resistance R 3, be parallel with the second capacitor C 2 and the first resistance R 1 on circuit between described the second resistance R 2 and the first diode D1, one end ground connection of described the second capacitor C 2, one end of described the first resistance is connected to the base stage of the first triode Q1, the emitter of described the first triode Q1 is connected in parallel on the circuit between the first diode D1 and the first capacitor C 1, the collector electrode of described the first triode is connected with the first light coupling relay IC1 through the 4th resistance R 4, the other end of described the 3rd port and the 4th port is connected on respectively the two ends of the inner photo resistance of the first light coupling relay IC1.
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 described the first light coupling relay IC1 interior light emitting diodes.
The beneficial effects of the utility model are: the utility model circuit is simple, reasonable in design, after can reaching the Switching Power Supply outage, reaches zero-power, the conservation of power resource.
The accompanying drawing explanation
Fig. 1 is the switching power circuit schematic diagram;
Fig. 2 is the utility model circuit theory diagrams.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
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 one, the second port 2, the 3rd port 3 and the 4th port 4, one end of the first port one is connected on Switching Power Supply output+12V power supply, on one end connecting valve power output end negative pole of the second port 2, 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 the first port one, the second resistance R 2, the first diode D1 and the first capacitor C 1, one end ground connection of the first capacitor C 1, be parallel with the 3rd resistance R 3 on circuit between described voltage stabilizing didoe ZD1 and the second resistance R 2, one end ground connection of the 3rd resistance R 3, be parallel with the second capacitor C 2 and the first resistance R 1 on circuit between the second resistance R 2 and the first diode D1, one end ground connection of the second capacitor C 2, one end of the 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 capacitor C 1, the collector electrode of the first triode is connected with the first light coupling relay IC1 through the 4th resistance R 4, the other end of the 3rd port 3 and the 4th port 4 is connected on respectively the two ends of the inner photo resistance of the first light coupling relay IC1.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 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.Now, at first the 220V attaching plug of AC Switching Power Supply is inserted in the 220V power supply, now AC Switching Power Supply work, the output Jiang Youji road Voltage-output of Switching Power Supply, wherein 12V voltage is exported on a road, and through the ZD1 voltage-stabiliser tube, 12V voltage makes the soft breakdown of ZD1 voltage-stabiliser tube, the voltage of output, after resistance R 3 dividing potential drops, charges resistance R 2 to capacitor C 2; Through diode D1, to capacitor C 1, charge simultaneously, because C1 electric capacity and C2 electric capacity are fully charged 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 by Switching Power Supply disconnects, voltage on the Switching Power Supply output can descend suddenly, now the ZD1 voltage-stabiliser tube is because of lower voltage, and reduce at the anodal output voltage of ZD1 voltage-stabiliser tube, now C2 electric capacity will be by R2 resistance, R3 resistance is to the ground electric discharge, make the conducting of Q1 triode, after the conducting of Q1 triode, but now the D1 diode due to cathode voltage lower than cathode voltage, in cut-off state, C1 electric capacity by the emitter by the Q1 triode to the collector electrode light-emitting diode positive pole to IC1 optocoupler inside through R4 resistance again, the light-emitting diode negative pole is to the 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 that moment is filled the electric capacity of Switching Power Supply AC220V input is by the photo resistance electric discharge of IC1 optocoupler inside, after reaching the Switching Power Supply outage, moment is discharged the institute of the anti-interference capacitor on Switching Power Supply 220V charging voltage safely.
Above demonstration and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model 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, the second port, the 3rd port and the 4th port, one end of described the first port is connected on Switching Power Supply output+12V power supply, on one end connecting valve power output end negative pole of described the second port, 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 the first port, the second resistance (R2), the first diode (D1) and the first electric capacity (C1), one end ground connection of described the first electric capacity (C1), be parallel with the 3rd resistance (R3) on circuit between described voltage stabilizing didoe (ZD1) and the second resistance (R2), one end ground connection of described the 3rd resistance (R3), be parallel with the second electric capacity (C2) and the first resistance (R1) on circuit between described the second resistance (R2) and the first diode (D1), one end ground connection of described the second electric capacity (C2), one end of described the first resistance (R1) is connected to the base stage of the first triode (Q1), the emitter of described 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 described the first triode (Q1) is connected with the first light coupling relay (IC1) through the 4th resistance (R4), the other end of described the 3rd port and the 4th port is connected on respectively the two ends of the inner photo resistance of the first light coupling relay (IC1).
2. anti-interference capacitor zero-power release circuit on 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 the first light coupling relay (IC1), the plus earth of described the first light coupling relay (IC1) interior light emitting diodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320276569 CN203352156U (en) | 2013-05-20 | 2013-05-20 | Zero power consumption release circuit for anti-interference capacitors on switching power supply AC end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320276569 CN203352156U (en) | 2013-05-20 | 2013-05-20 | Zero power consumption release circuit for anti-interference capacitors on switching power supply AC end |
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| Publication Number | Publication Date |
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| CN203352156U true CN203352156U (en) | 2013-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320276569 Expired - Fee Related CN203352156U (en) | 2013-05-20 | 2013-05-20 | Zero power consumption release circuit for anti-interference capacitors on switching power supply AC end |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103269064A (en) * | 2013-05-20 | 2013-08-28 | 刘举柱 | Zero-power-consumption releasing circuit of anti-interference capacitor at AC end of switching power supply |
-
2013
- 2013-05-20 CN CN 201320276569 patent/CN203352156U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103269064A (en) * | 2013-05-20 | 2013-08-28 | 刘举柱 | Zero-power-consumption releasing circuit of anti-interference capacitor at AC end of switching power supply |
| CN103269064B (en) * | 2013-05-20 | 2015-05-06 | 刘举柱 | Zero-power-consumption releasing circuit of anti-interference capacitor at AC end of switching power supply |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131218 Termination date: 20160520 |