CN203562753U - Protection circuit capable of being quickly restarted - Google Patents
Protection circuit capable of being quickly restarted Download PDFInfo
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- CN203562753U CN203562753U CN201320752213.0U CN201320752213U CN203562753U CN 203562753 U CN203562753 U CN 203562753U CN 201320752213 U CN201320752213 U CN 201320752213U CN 203562753 U CN203562753 U CN 203562753U
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- diode
- power supply
- capacitor
- output
- photoelectrical coupler
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Abstract
The utility model introduces a protection circuit capable of being quickly restarted. The positive end of a direct-current power supply is connected with one end of a switch; the other end of the switch, the anode of a diode and one end of a resistor are connected; the cathode of the diode and the anode of a capacitor are connected; the other end of the resistor, the cathode of a voltage regulator tube and the gate of a MOS tube are connected; the cathode of the capacitor 3, the anode of the voltage regulator tube, the source of the MOS tube and a negative line of the input direct-current power supply are connected; the drain of the MOS tube is connected with any pin of a silicon controlled rectifier end of a photoelectric coupler; the other pin of the silicon controlled rectifier end of the photoelectric coupler generates a control signal; the cathode of the diode generates positive output and the negative line of the input direct-current power supply generates negative output; and an abnormal signal source is connected with a diode end of the photoelectric coupler. According to the protection circuit of the utility model, the direct-current power supply can be protected when being abnormal, the output voltage is closed during power supply protection, and the protection circuit can be quickly started to generate output voltage after a fault is removed.
Description
Technical field
The utility model relates to a kind of DC power supply art, particularly a kind of protective circuit that can restart fast.
Background technology
When direct-current input power supplying is abnormal, meeting protection power source self, closes output voltage during power protection, needs to restart power supply source after trouble shooting, and power supply could recover output voltage.
Traditional power protection; after needing to wait for power supply internal capacitor discharge off after powered-down output, could start generation output voltage; power failure needs to wait for that the capacitor discharge time is longer after removing, and adopts that the conventional method power-efficient of resistor electric discharge is low and volume is large.
Design a kind of protective circuit that can restart fast after can power protection, can improve power supply easy-to-use, reduce power supply power consumption, reduce power volume.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of protective circuit that can restart fast, and when direct-current input power supplying is abnormal, meeting protection power source self, closes output voltage during power protection, after trouble shooting, can start fast, produces output voltage.
In order to realize the object solving the problems of the technologies described above, the utility model has adopted following technical scheme:
A kind of protective circuit that can restart fast of the present utility model, comprises DC power supply, abnormal signal source, switch, diode, capacitor, resistor, voltage-stabiliser tube, metal-oxide-semiconductor, photoelectrical coupler;
DC power supply anode is connected with one end of switch, the other end of switch, the anode of diode is connected with one end of resistor, the negative electrode of diode is connected with the positive pole of capacitor, the other end of resistor, the negative electrode of voltage-stabiliser tube is connected with metal-oxide-semiconductor grid, the negative electrode of capacitor, the anode of voltage-stabiliser tube, the source electrode of metal-oxide-semiconductor is connected with the negative terminal of DC power supply, any pin of the controllable silicon end of the drain electrode of metal-oxide-semiconductor and photoelectrical coupler is connected, another pin of photoelectrical coupler controllable silicon end produces control signal, the negative electrode of diode is just being output, it is negative that the negative wire of input DC power is output, the diode end of abnormal signal source and photoelectrical coupler is connected.
Concrete, the DC power supply voltage of this patent can be any direct voltage.
Concrete, the abnormal signal source of this patent and the diode end of photoelectrical coupler are connected, and refer to that the ungrounded end in abnormal signal source and the diode end of photoelectrical coupler are connected.
Described control signal, another pin generation control signal end that is photoelectrical coupler controllable silicon end is the control port of this circuit; Just, the negative electrode that is diode produces output, is the control port of this circuit in output; Output is negative, is the negative terminal of DC power supply, is the control port of this circuit.
Concrete, the capacitor of this patent is polar capacitor.
A kind of protective circuit that can restart fast of the present utility model; its working method is: switch closed path is by diode and capacitor; the output of the negative electrode of diode has output voltage; when the diode termination of photoelectrical coupler is subject to abnormal signal source; the controllable silicon end of photoelectrical coupler is in conducting state; the drain electrode of metal-oxide-semiconductor and source electrode are in conducting state simultaneously; the control signal that photoelectrical coupler controllable silicon end produces is dragged down; switch disconnects; the drain electrode of metal-oxide-semiconductor and source electrode cut-off, the control signal that photoelectrical coupler controllable silicon end produces is fast in cut-off state.
By adopting technique scheme, the utlity model has following beneficial effect:
A kind of protective circuit that can restart fast of the present utility model, when direct-current input power supplying is abnormal, meeting protection power source self, closes output voltage during power protection, after trouble shooting, can start fast, produces output voltage.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of protective circuit that can restart fast of this patent.
Fig. 2 is a kind of application principle figure of the protective circuit that can restart fast.
In Fig. 1 and Fig. 2, V1-DC power supply, V2-abnormal signal source, 1-switch, 2-diode, 3-capacitor, 4-resistor, 5-voltage-stabiliser tube, 6-MOS pipe, 7-photoelectrical coupler, 8-DCV-DC transducer.
"+in ", " pc " and " in " they are the control ports of this circuit, control signal " pc ", and another pin generation control signal end that is photoelectrical coupler 7 controllable silicon ends is the control port of this circuit; Output is "+in " just, and the negative electrode generation output that is diode 2 is the control port of this circuit; Output negative " in ", the negative terminal that is DC power supply V1 is the control port of this circuit.
Embodiment
Below in conjunction with accompanying drawing, this patent is further explained.But the protection range of this patent is not limited to concrete execution mode.
As shown in Figure 1, a kind of protective circuit that can restart fast of the present utility model, comprises DC power supply V1, abnormal signal source V2, switch 1, diode 2, capacitor 3, resistor 4, voltage-stabiliser tube 5, metal-oxide-semiconductor 6, photoelectrical coupler 7.
Direct current stream power supply V1 anode is connected with one end of switch 1, the other end of switch 1, the anode of diode 2 is connected with one end of resistor 4, the negative electrode of diode 2 is connected with the positive pole of capacitor 3, the other end of resistor 4, the negative electrode of voltage-stabiliser tube 5 is connected with metal-oxide-semiconductor 6 grids, the negative electrode of capacitor 3, the anode of voltage-stabiliser tube 5, the source electrode of metal-oxide-semiconductor 6 is connected with the negative wire of the DC power supply V1 of input, any pin of the controllable silicon end of the drain electrode of metal-oxide-semiconductor 6 and photoelectrical coupler 7 is connected, another pin of photoelectrical coupler 7 controllable silicon ends produces control signal end " pc ", the negative electrode of diode 2 produces output just "+in ", the negative wire of input DC power V1 produces output negative " in ", the diode end of abnormal signal source V2 and photoelectrical coupler 7 is connected.AC power V1 voltage can be any direct voltage; Capacitor 3 is polar capacitor.
Working method is: switch 1 closed path is by diode 2 and capacitor 3, the output of the negative electrode of diode 2 has output voltage, when the diode termination of photoelectrical coupler 7 is subject to abnormal signal source V2, the controllable silicon end of photoelectrical coupler 7 is in conducting state, the drain electrode of metal-oxide-semiconductor 6 and source electrode are in conducting state simultaneously, the control signal " pc " that photoelectrical coupler 7 controllable silicon ends produce is dragged down, switch 2 disconnects, the drain electrode of metal-oxide-semiconductor 6 and source electrode cut-off, the control signal " pc " that photoelectrical coupler 7 controllable silicon ends produce is fast in cut-off state.
Claims (4)
1. the protective circuit that can restart fast, is characterized in that: comprise DC power supply (V1), abnormal signal source (V2), switch (1), diode (2), capacitor (3), resistor (4), voltage-stabiliser tube (5), metal-oxide-semiconductor (6), photoelectrical coupler (7);
DC power supply (V1) anode is connected with one end of switch (1), the other end of switch (1), the anode of diode (2) is connected with one end of resistor (4), the negative electrode of diode (2) is connected with the positive pole of capacitor (3), the other end of resistor (4), the negative electrode of voltage-stabiliser tube (5) is connected with metal-oxide-semiconductor (6) grid, the negative electrode of capacitor (3), the anode of voltage-stabiliser tube (5), the source electrode of metal-oxide-semiconductor (6) is connected with the negative terminal of DC power supply V1, any pin of the controllable silicon end of the drain electrode of metal-oxide-semiconductor (6) and photoelectrical coupler (7) is connected, another pin of photoelectrical coupler (7) controllable silicon end produces control signal (" pc "), the negative electrode of diode (2) is output just ("+in "), the negative wire of input DC power (V1) is output negative (" in "), abnormal signal source (V2) is connected with the diode end of photoelectrical coupler (7).
2. the protective circuit that can restart fast according to claim 1, is characterized in that: described AC power V1 voltage is any direct voltage.
3. the protective circuit that can restart fast according to claim 1, is characterized in that: another pin that described control signal " pc " is photoelectrical coupler (7) controllable silicon end produces the control port that control signal end is the protective circuit that can restart fast; The output negative electrode that just ("+in ") is being diode (2) produces output, is the control port of the protective circuit that can restart fast; Output negative (" in ") is the negative terminal of DC power supply (V1), is the control port of the protective circuit that can restart fast.
4. the protective circuit that can restart fast according to claim 1, is characterized in that: described capacitor (3) is polar capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320752213.0U CN203562753U (en) | 2013-11-26 | 2013-11-26 | Protection circuit capable of being quickly restarted |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320752213.0U CN203562753U (en) | 2013-11-26 | 2013-11-26 | Protection circuit capable of being quickly restarted |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203562753U true CN203562753U (en) | 2014-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320752213.0U Expired - Fee Related CN203562753U (en) | 2013-11-26 | 2013-11-26 | Protection circuit capable of being quickly restarted |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203562753U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104682686A (en) * | 2015-02-09 | 2015-06-03 | 中国电子科技集团公司第二十三研究所 | Low-power-consumption on-load direct current power supply conversion control module |
-
2013
- 2013-11-26 CN CN201320752213.0U patent/CN203562753U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104682686A (en) * | 2015-02-09 | 2015-06-03 | 中国电子科技集团公司第二十三研究所 | Low-power-consumption on-load direct current power supply conversion control module |
| CN104682686B (en) * | 2015-02-09 | 2017-07-11 | 中国电子科技集团公司第二十三研究所 | A kind of low-power consumption bringing onto load dc source shift control module |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140423 Termination date: 20191126 |