CN205017204U - 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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- CN205017204U CN205017204U CN201520786452.7U CN201520786452U CN205017204U CN 205017204 U CN205017204 U CN 205017204U CN 201520786452 U CN201520786452 U CN 201520786452U CN 205017204 U CN205017204 U CN 205017204U
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Abstract
The utility model provides a zero power consumption release circuit for anti -interference capacitors on switching power supply AC end, including opto -coupler IC1, resistance R1, diode D1, zener diode VD1, resistance R2, electric capacity C1, resistance R3, diode D2, electric capacity C2, triode Q1 and resistance R4, 22V voltage steps down through resistance R1, the rectification of diode D1, output 5V voltage after the zener diode VD1 steady voltage, because of resistance R1 resistance very big, the about 5V voltage of output charges to electric capacity C1 after the VD1 steady voltage, 5V voltage charges to electric capacity C2 through diode D2 simultaneously, electric capacity C1 and C2 are full of, because of electric capacity C1 capacity less, be full of earlier, force triode Q1 base voltage to be higher than the emitter voltage, the triode Q1 end, triode Q1 collecting electrode does not have voltage output, the inside emitting diode of IC1 does not give out light, give off light, the inside photo resistance resistance of IC1 is close infinitely great, so because of resistance R1 resistance is 3.3M omega, the electric current that 220V voltage passed through resistance R1 produced is minimum, power is minimum, reach the anti -interference electric capacity of the AC release resistance zero -power that switching power supply served.
Description
Technical field
The utility model relates to 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 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.
Utility model content
It is simple that technical problem to be solved in the utility model 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 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, comprise Switching Power Supply, described Switching Power Supply one end is output, can export+5V,-12V, + 12V voltage, another termination current supply circuit, described current supply circuit is parallel with an electric capacity C, it is characterized in that, also comprises the first optocoupler IC1, first resistance R1, first diode D1, first voltage stabilizing didoe VD1, second resistance R2, first electric capacity C1, 3rd resistance R3, second diode D2, second electric capacity C2, first triode Q1 and the 4th resistance R4, one end of described electric capacity C connects one end of the first resistance R1 and one end of the inner photo resistance of the first optocoupler IC1 respectively, the other end of described electric capacity C is connected to the light-emitting diode negative pole end of optocoupler IC1 inside and the other end of photo resistance, and the other end of described first resistance R1 is parallel with the first diode D1, first voltage stabilizing didoe VD1, second resistance R2, first electric capacity C1, 3rd resistance R3, second diode D2 and the second electric capacity C2, the base stage of the one termination first triode Q1 of described 3rd resistance R3, the emitter of described first triode Q1 connects between the second diode D2 and the second electric capacity C2, the collector electrode of described first triode Q1 is connected to the positive terminal of the first optocoupler IC1 interior light emitting diodes through the 4th resistance R4, described first voltage stabilizing didoe VD1 one end, second resistance R2 one end, first electric capacity C1 one end and second electric capacity C2 one end ground connection respectively,
The resistance of described first resistance R1 is 3.3 megaohms.
The beneficial effects of the utility model are: the utility model circuit 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 the utility model circuit theory diagrams.
Embodiment
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the utility model further.
As shown in Figure 1, on a kind of Switching Power Supply AC end, anti-interference capacitor zero-power release circuit, comprises Switching Power Supply, and described Switching Power Supply one end is output, can export+5V,-12V, + 12V voltage, another termination current supply circuit, described current supply circuit is parallel with an electric capacity C, it is characterized in that, also comprises the first optocoupler IC1, first resistance R1, first diode D1, first voltage stabilizing didoe VD1, second resistance R2, first electric capacity C1, 3rd resistance R3, second diode D2, second electric capacity C2, first triode Q1 and the 4th resistance R4, one end of described electric capacity C connects one end of the first resistance R1 and one end of the inner photo resistance of the first optocoupler IC1 respectively, the other end of described electric capacity C is connected to the light-emitting diode negative pole end of optocoupler IC1 inside and the other end of photo resistance, and the other end of described first resistance R1 is parallel with the first diode D1, first voltage stabilizing didoe VD1, second resistance R2, first electric capacity C1, 3rd resistance R3, second diode D2 and the second electric capacity C2, the base stage of the one termination first triode Q1 of described 3rd resistance R3, the emitter of described first triode Q1 connects between the second diode D2 and the second electric capacity C2, the collector electrode of described first triode Q1 is connected to the positive terminal of the first optocoupler IC1 interior light emitting diodes through the 4th resistance R4, described first voltage stabilizing didoe VD1 one end, second resistance R2 one end, first electric capacity C1 one end and second electric capacity C2 one end ground connection respectively.
Operation principle:
22V voltage is through resistance R1 step-down, diode D1 rectification, 5V voltage is exported after voltage stabilizing didoe VD1 voltage stabilizing, because resistance R1 resistance is very large, after VD1 voltage stabilizing, export about 5V voltage charge to electric capacity C1, 5V voltage charges to electric capacity C2 through diode D2 simultaneously, very fast, electric capacity C1 and C2 is filled electricity, because electric capacity C1 capacity is less, first be full of electricity, force triode Q1 base voltage higher than emitter voltage, triode Q1 ends, triode Q1 collector electrode Non voltage output, the light-emitting diode of IC1 inside is not luminous, the photo resistance resistance approach infinity of IC1 inside, so because of resistance R1 resistance be 3.3M Ω, the electric current that 220V voltage produces through resistance R1 is minimum, so power is also minimum, reach the AC anti-interference capacitor release resistance zero-power on Switching Power Supply end.
After the plug soil in Switching Power Supply AC power supplies is pulled out power-off, electric capacity C1 will be discharged by resistance R2, R2 is clamper discharge resistance, after electric capacity C1 is sparked by resistance R2, it is triode Q1 base voltage step-down, the voltage that electric capacity C2 fills makes the light-emitting diode of optocoupler IC1 inside obtain electroluminescence by triode Q1 emitter to triode Q1 collector electrode after resistance R1 step-down, after the photo resistance of optocoupler IC1 inside obtains illumination, resistance diminishes, the photo resistance of the high voltage that electric capacity C in parallel on AC220V end fills by IC1 inside is discharged, after reaching Switching Power Supply power-off, instantaneously the anti-interference capacitor institute charging voltage on Switching Power Supply AC220V power supply is discharged safely.
More than show and describe general 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; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.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, comprise Switching Power Supply, described Switching Power Supply one end is output, another termination current supply circuit, described current supply circuit is parallel with an electric capacity C, it is characterized in that, also comprise the first optocoupler (IC1), first resistance (R1), first diode (D1), first voltage stabilizing didoe (VD1), second resistance (R2), first electric capacity (C1), 3rd resistance (R3), second diode (D2), second electric capacity (C2), first triode (Q1) and the 4th resistance (R4), one end of described electric capacity (C) connects one end of the first resistance (R1) and one end of the first optocoupler (IC1) inner photo resistance respectively, the other end of described electric capacity (C) is connected to the other end of the inner light-emitting diode negative pole end of optocoupler (IC1) and photo resistance, the other end of described first resistance (R1) is parallel with the first diode (D1), first voltage stabilizing didoe (VD1), second resistance (R2), first electric capacity (C1), 3rd resistance (R3), second diode (D2) and the second electric capacity (C2), the base stage of one termination first triode (Q1) of described 3rd resistance (R3), the emitter of described first triode (Q1) connects between the second diode (D2) and the second electric capacity (C2), the collector electrode of described first triode (Q1) is connected to the positive terminal of the first optocoupler (IC1) interior light emitting diodes through the 4th resistance (R4), described first voltage stabilizing didoe (VD1) one end, second resistance (R2) one end, first electric capacity (C1) one end and the second electric capacity (C2) one end ground connection respectively.
2. anti-interference capacitor zero-power release circuit on Switching Power Supply AC end according to claim 1, is characterized in that: the resistance of described first resistance (R1) is 3.3 megaohms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520786452.7U CN205017204U (en) | 2015-10-09 | 2015-10-09 | Zero power consumption release circuit for anti -interference capacitors on switching power supply AC end |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520786452.7U CN205017204U (en) | 2015-10-09 | 2015-10-09 | Zero power consumption release circuit for anti -interference capacitors on switching power supply AC end |
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| Publication Number | Publication Date |
|---|---|
| CN205017204U true CN205017204U (en) | 2016-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520786452.7U Expired - Fee Related CN205017204U (en) | 2015-10-09 | 2015-10-09 | Zero power consumption release circuit for anti -interference capacitors on switching power supply AC end |
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| Country | Link |
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| CN (1) | CN205017204U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2015
- 2015-10-09 CN CN201520786452.7U patent/CN205017204U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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Legal Events
| 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 |
Granted publication date: 20160203 Termination date: 20181009 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |