CN202004636U - Automatic discharge circuit of auxiliary power supply - Google Patents
Automatic discharge circuit of auxiliary power supply Download PDFInfo
- Publication number
- CN202004636U CN202004636U CN 201120079402 CN201120079402U CN202004636U CN 202004636 U CN202004636 U CN 202004636U CN 201120079402 CN201120079402 CN 201120079402 CN 201120079402 U CN201120079402 U CN 201120079402U CN 202004636 U CN202004636 U CN 202004636U
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- triode
- resistance
- capacitor
- diode
- power supply
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Abstract
The utility model relates to an automatic discharge circuit of an auxiliary power supply, which comprises a transformer. The transformer is provided with two secondary windings T1-1 and T1-2 as well as triodes Q1 and Q2, wherein the secondary winding T1-1 is connected in series with a diode D1 and then connected in parallel with capacitors C1 and C2, and the secondary winding T1-2 is connected with a diode D2 and a capacitor C3 in series; the base electrode of the triode Q1 is connected with resistors R1 and R6, the emitting electrode of the triode Q1 is grounded, the other end of the resistor R1 is connected with the cathode of the triode D2 and the capacitor, and the other end of the resistor R6 is grounded; and the base electrode of the triode Q2 is connected with the collector electrode of the triode Q1 and the resistor R2, the collector electrode of the triode Q2 is connected with one ends of resistors R3 and R4, the emitting electrode of the triode Q2 is grounded, and the other ends of the resistors R3 and R4 are connected with the cathode of the diode D1 and the capacitors C1 and C2. The automatic discharge circuit can control the discharge time, is simple and reliable for circuits, and does not consume power under the condition of a normal power supply.
Description
Technical field
The utility model relates to a kind of accessory power supply automatic discharge circuit.
Background technology
In communication system, the communication power supply that multichannel is exported all requires very harsh fall time.
Summary of the invention
The purpose of this utility model is at the above-mentioned requirements of communication system to accessory power supply, and a kind of accessory power supply automatic discharge circuit that every road output of communication power supply is had excellent control effect fall time is provided.
The purpose of this utility model is achieved in that the utility model comprises transformer, described transformer is provided with two secondary winding T1_1 and T1_2 altogether, secondary winding T1_1 connects with diode D1, obtain output voltage after in parallel with capacitor C 1 and capacitor C 2 again, secondary winding T1_2 connects with diode D2 and capacitor C 3; Also be provided with triode Q1 and triode Q2, the base stage of described triode Q1 is connected with an end of resistance R 1 and resistance R 6, the grounded emitter of triode Q1, and the other end of resistance R 1 is connected the other end ground connection of resistance R 6 with the negative electrode of diode D2 with capacitor C 3; The base stage of described triode Q2 is connected with the collector electrode of triode Q1 and an end of resistance R 2, the collector electrode of triode Q2 is connected with an end of resistance R 3 and resistance R 4, the grounded emitter of triode Q2, the other end of resistance R 3 and resistance R 4 is connected with capacitor C 2 with capacitor C 1 with the negative electrode of diode D1.
Technique effect of the present utility model is: the utility model can be resolved the multichannel output of power supply, and control is the electricity time down.Circuit is simple, and is reliable, and used components and parts are less, and under the normal situation of power supply, not loss power.
Description of drawings
Fig. 1 is the circuit theory diagrams of embodiment.
Embodiment
Referring to Fig. 1, the accessory power supply automatic discharge circuit of present embodiment comprises transformer, described transformer is provided with two secondary winding T1_1 and T1_2 altogether, secondary winding T1_1 connects with diode D1, obtain output voltage V out+ after in parallel with capacitor C 1 and capacitor C 2 again, secondary winding T1_2 connects with diode D2 and capacitor C 3; The automatic discharge circuit of present embodiment also is provided with triode Q1 and triode Q2, the base stage of described triode Q1 is connected with an end of resistance R 1 and resistance R 6, the grounded emitter of triode Q1, the other end of resistance R 1 is connected the other end ground connection of resistance R 6 with the negative electrode of diode D2 with capacitor C 3; The base stage of described triode Q2 is connected with the collector electrode of triode Q1 and an end of resistance R 2, the collector electrode of triode Q2 is connected with an end of resistance R 3 and resistance R 4, the grounded emitter of triode Q2, the other end of resistance R 3 and resistance R 4 is connected with capacitor C 2 with capacitor C 1 with the negative electrode of diode D1.
When start, secondary winding T1_1 and T1_2 power on simultaneously, diode D1 and D2 conducting simultaneously, charge for capacitor C 1, C2, C3 simultaneously, by the capacity of control capacittance C3, A point current potential is risen rapidly, cause triode Q1 conducting, the current potential that B is ordered drags down, thereby makes triode Q2 be in cut-off state.Resistance R 3, the R4 of discharge are in off-state.Thereby guarantee when output voltage V out+ operate as normal not loss power.
When shutdown, diode D1 and D2 carry simultaneously and end, A point current potential descends rapidly, make triode Q1 be in cut-off state, the B point is a high potential, thereby makes triode Q2 conducting, moves the C point to GND, and the voltage of Vout+ is discharged rapidly by resistance R 3, R4, thereby reach the control output Vout+ order ground of fall time.
Claims (1)
1. accessory power supply automatic discharge circuit, comprise transformer, it is characterized in that: described transformer is provided with two secondary winding T1_1 and T1_2 altogether, secondary winding T1_1 connects with diode D1, obtain output voltage after in parallel with capacitor C 1 and capacitor C 2 again, secondary winding T1_2 connects with diode D2 and capacitor C 3; Also be provided with triode Q1 and triode Q2, the base stage of described triode Q1 is connected with an end of resistance R 1 and resistance R 6, the grounded emitter of triode Q1, and the other end of resistance R 1 is connected the other end ground connection of resistance R 6 with the negative electrode of diode D2 with capacitor C 3; The base stage of described triode Q2 is connected with the collector electrode of triode Q1 and an end of resistance R 2, the collector electrode of triode Q2 is connected with an end of resistance R 3 and resistance R 4, the grounded emitter of triode Q2, the other end of resistance R 3 and resistance R 4 is connected with capacitor C 2 with capacitor C 1 with the negative electrode of diode D1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120079402 CN202004636U (en) | 2011-03-23 | 2011-03-23 | Automatic discharge circuit of auxiliary power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120079402 CN202004636U (en) | 2011-03-23 | 2011-03-23 | Automatic discharge circuit of auxiliary power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202004636U true CN202004636U (en) | 2011-10-05 |
Family
ID=44707362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120079402 Expired - Fee Related CN202004636U (en) | 2011-03-23 | 2011-03-23 | Automatic discharge circuit of auxiliary power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202004636U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242702A (en) * | 2014-10-10 | 2014-12-24 | 苏州弘鹏新能源有限公司 | Busbar capacitance discharge protection circuit of photovoltaic inverter |
-
2011
- 2011-03-23 CN CN 201120079402 patent/CN202004636U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242702A (en) * | 2014-10-10 | 2014-12-24 | 苏州弘鹏新能源有限公司 | Busbar capacitance discharge protection circuit of photovoltaic inverter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN JINGFUYUAN TECH. CO., LTD. Free format text: FORMER NAME: SHENZHEN JINGFUYUAN TECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: Shenzhen Nanshan District City, Guangdong province 518000 white pine Luxili Nangang Second Industrial Park 12 Building 1, 2, 5 floor Patentee after: SHENZHEN JINGFUYUAN TECHNOLOGY CO., LTD. Address before: Shenzhen Nanshan District City, Guangdong province 518000 white pine Luxili Nangang Second Industrial Park twelfth 5 floor Patentee before: Shenzhen Jingfuyuan Tech Co., Ltd. |
|
| 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: 20111005 Termination date: 20190323 |