CN103066568B - Protective circuit for direct current power output - Google Patents
Protective circuit for direct current power output Download PDFInfo
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- CN103066568B CN103066568B CN201310021733.9A CN201310021733A CN103066568B CN 103066568 B CN103066568 B CN 103066568B CN 201310021733 A CN201310021733 A CN 201310021733A CN 103066568 B CN103066568 B CN 103066568B
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- relay
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- power supply
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- electrochemical capacitor
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Abstract
The present invention relates to technical field of electromechanical control, particularly a kind of protective circuit for direct current power output.Output protection circuit is provided with between DC power supply and executive circuit.The setting of output protection circuit, the problem that solve moment impact electric current, cannot turn off immediately, ensure that the reliability that DC power supply exports.
Description
Technical field
The present invention relates to technical field of electromechanical control, particularly a kind of protective circuit for direct current power output.
Background technology
In electrical system, when DC power supply is powered to executive circuit, for ensureing the stability of DC power supply, common way is parallel with large bulk capacitance at input.Although arrange the stability that electric capacity ensure that DC power supply, also following problem can be produced:
When DC power supply is just connected, can capacitor charging be caused, produce moment impact electric current, the components and parts in executive circuit can be caused to damage because of big current; When DC power supply turns off, due to the existence of electric capacity, can cause controlling power supply cannot disconnect immediately.So all can affect the reliability of DC power supply.
Summary of the invention
The object of the present invention is to provide a kind of protective circuit for direct current power output, increase the output reliability of DC power supply.
For reaching above effect, the technical solution used in the present invention is: a kind of protective circuit for direct current power output, is provided with output protection circuit between DC power supply and executive circuit.
Compared with prior art, there is following technique effect in the present invention:
The setting of output protection circuit, the problem that solve moment impact electric current, cannot turn off immediately, ensure that the reliability that DC power supply exports.
Accompanying drawing explanation
Fig. 1 is principle schematic of the present invention;
Fig. 2 is circuit theory diagrams of the present invention;
Fig. 3 is Fig. 2 breaker in middle K1 attracting state circuit theory diagrams;
Fig. 4 is Fig. 2 breaker in middle K1 off-state circuit theory diagrams.
Embodiment
Below in conjunction with Fig. 1 to Fig. 4, the present invention is described in further detail:
Consult Fig. 1, Fig. 2; a kind of protective circuit for direct current power output; output protection circuit 20 is provided with between DC power supply 10 and executive circuit 30; the output head anode of DC power supply 10 is as the input anode of output protection circuit 20; namely the Vin shown in Fig. 2; the input anode of executive circuit 30 as the output head anode of output protection circuit 20, the Vout namely shown in Fig. 2.In the present embodiment, described output protection circuit 20 comprises relay J 1, the tip side 1 of described relay J 1, 2 respectively with the output head anode of DC power supply 10, the input anode of executive circuit 30 is connected, line bag one end 3 end of relay J 1 is connected with the positive pole of electrochemical capacitor C1, the line bag other end 4 of relay J 1 and the minus earth of electrochemical capacitor C1, resistance R3 after connecting with light-emitting diode H1 again with electrochemical capacitor C2, C3 is in parallel, electrochemical capacitor C2, the positive pole of C3, one end of resistance R3 is connected and is connected with the tip side 2 of relay J 1, electrochemical capacitor C2, the negative pole of C3, the negative pole of light-emitting diode H1 is connected and ground connection, the tip side 2 of relay J 1, line bag end 3 is respectively by resistance R2, the A of R1 and double-point double-throw switch K1, A ' end is connected, the B of double-point double-throw switch K1, B ' end is connected with the tip side 1 of relay J 1, the C of double-point double-throw switch K1, C ' holds ground connection.The position residing for double-point double-throw switch K1 shown in Fig. 2 is off state.
Carry out describing to the principle of this circuit below:
Consult Fig. 3, during double-point double-throw switch K1 adhesive, its A, A ' end and B, B ' hold and are connected, DC power supply 10 is charged to electrochemical capacitor C1 by resistance R1, by R2 to electrochemical capacitor C2, C3 charging, rear relay J1 adhesive, is communicated with DC power supply 10 and executive circuit 30, light-emitting diode H1 is bright, plays indicative function.When Vin charges to electrochemical capacitor C1, C2, C3, by the metering function of resistance R1 and R2, reduce the moment impact electric current of circuit.
Consult Fig. 4, when double-point double-throw switch K1 disconnects, its A, A ' end with C, C ' holds and are connected, and electrochemical capacitor C1 is connected to ground connection electric discharge by resistance R1, and during the disconnection of guarantee switch, relay J 1 disconnects fast, the connection of cut-out DC power supply 10 and executive circuit 30.Electrochemical capacitor C2, C3 are discharged by resistance R2 ground connection simultaneously, output protection circuit 20 no-output voltage, simultaneously indicator light extinguish fast when ensureing that double-point double-throw switch K1 disconnects.
Claims (1)
1. a protective circuit for direct current power output, is characterized in that: be provided with output protection circuit (20) between DC power supply (10) and executive circuit (30), described output protection circuit (20) comprises relay J 1, the tip side 1 of described relay J 1, 2 respectively with the output head anode of DC power supply (10), the input anode of executive circuit (30) is connected, line bag one end 3 of relay J 1 is connected with the positive pole of electrochemical capacitor C1, the line bag other end 4 of relay J 1 and the minus earth of electrochemical capacitor C1, resistance R3 after connecting with light-emitting diode H1 again with electrochemical capacitor C2, C3 is in parallel, electrochemical capacitor C2, the positive pole of C3, one end of resistance R3 is connected and is connected with the tip side 2 of relay J 1, electrochemical capacitor C2, the negative pole of C3, the negative pole of light-emitting diode H1 is connected and ground connection, the tip side 2 of relay J 1, line bag end 3 is respectively by resistance R2, the A of R1 and double-point double-throw switch K1, A ' end is connected, the B of double-point double-throw switch K1, B ' end is connected with the tip side 1 of relay J 1, the C of double-point double-throw switch K1, C ' holds ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310021733.9A CN103066568B (en) | 2013-01-21 | 2013-01-21 | Protective circuit for direct current power output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310021733.9A CN103066568B (en) | 2013-01-21 | 2013-01-21 | Protective circuit for direct current power output |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103066568A CN103066568A (en) | 2013-04-24 |
| CN103066568B true CN103066568B (en) | 2015-11-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310021733.9A Active CN103066568B (en) | 2013-01-21 | 2013-01-21 | Protective circuit for direct current power output |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103066568B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3756421A1 (en) | 2018-02-23 | 2020-12-30 | Signify Holding B.V. | Lighting unit, lighting system and method of connecting a lighting unit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201178297Y (en) * | 2008-02-25 | 2009-01-07 | 深圳和而泰智能控制股份有限公司 | Motor driving protection circuit for household electrical appliance |
| CN201463723U (en) * | 2009-04-10 | 2010-05-12 | 林立宇 | Large-current heating circuit module for automatic shifting between charge and discharge of capacitor |
| CN202068226U (en) * | 2011-04-28 | 2011-12-07 | 天津市松正电动汽车技术股份有限公司 | Charging and discharging tool device for super capacitor |
| CN203119452U (en) * | 2013-01-21 | 2013-08-07 | 中国人民解放军63963部队 | A DC power output protection circuit |
-
2013
- 2013-01-21 CN CN201310021733.9A patent/CN103066568B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201178297Y (en) * | 2008-02-25 | 2009-01-07 | 深圳和而泰智能控制股份有限公司 | Motor driving protection circuit for household electrical appliance |
| CN201463723U (en) * | 2009-04-10 | 2010-05-12 | 林立宇 | Large-current heating circuit module for automatic shifting between charge and discharge of capacitor |
| CN202068226U (en) * | 2011-04-28 | 2011-12-07 | 天津市松正电动汽车技术股份有限公司 | Charging and discharging tool device for super capacitor |
| CN203119452U (en) * | 2013-01-21 | 2013-08-07 | 中国人民解放军63963部队 | A DC power output protection circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103066568A (en) | 2013-04-24 |
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Address after: 100072 Beijing city Fengtai District Changxindian unit 63963 No. 53 Patentee after: 63963 Troops,PLA Patentee after: HEFEI TONGZHI ELECTRICAL CONTROL TECHNOLOGY CO., LTD. Address before: 100072 Beijing city Fengtai District Changxindian unit 63963 No. 53 Patentee before: 63963 Troops,PLA Patentee before: Hefei Tongzhi Electrical Control Technology Co., Ltd. |
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