CN103066568A - Protective circuit for direct current power output - Google Patents
Protective circuit for direct current power output Download PDFInfo
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- CN103066568A CN103066568A CN2013100217339A CN201310021733A CN103066568A CN 103066568 A CN103066568 A CN 103066568A CN 2013100217339 A CN2013100217339 A CN 2013100217339A CN 201310021733 A CN201310021733 A CN 201310021733A CN 103066568 A CN103066568 A CN 103066568A
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- relay
- power supply
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- electrochemical capacitor
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Abstract
The invention relates to the technical field of electromechanical control, in particular to a protective circuit of direct current power output. An output protective circuit is arranged between the direct current power and an execution circuit. Due to the arrangement of the output protective circuit, the problems of momentary impact current and incapability of immediately being shutdown are resolved, and the reliability of direct current power output is guaranteed.
Description
Technical field
The present invention relates to the Electromechanical Control technical field, particularly a kind of DC power supply output protection circuit.
Background technology
In the electrical system, when DC power supply was powered to executive circuit, for guaranteeing the stability of DC power supply, common way was to be parallel with large bulk capacitance at input.Although the stability that electric capacity has guaranteed DC power supply is set, also can produces following problem:
DC power supply rigidly connects when leading to, and can cause capacitor charging, produces the moment impact electric current, can cause the components and parts in the executive circuit to damage because of large electric current; When DC power supply was turn-offed, because the existence of electric capacity, can cause controlling power supply can't 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 DC power supply output protection circuit, increase the output reliability of DC power supply.
For reaching above effect, the technical solution used in the present invention is: a kind of DC power supply output protection circuit 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 the moment impact electric current, can't turn-off has immediately guaranteed the reliability that DC power supply is exported.
Description of drawings
Fig. 1 is principle schematic of the present invention;
Fig. 2 is circuit theory diagrams of the present invention;
Fig. 3 is K switch 1 attracting state circuit theory diagrams among Fig. 2;
Fig. 4 is K switch 1 off-state circuit theory diagrams among Fig. 2.
Embodiment
Below in conjunction with Fig. 1 to Fig. 4, the present invention done being described in further detail:
Consult Fig. 1, Fig. 2; a kind of DC power supply output protection circuit; 30 of DC power supply 10 and executive circuits are provided with output protection circuit 20; the output head anode of DC power supply 10 is as the input anode of output protection circuit 20; be the Vin shown in Fig. 2; the input anode of executive circuit 30 is as the output head anode of output protection circuit 20, i.e. Vout 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 links to each other; line Bao Yiduan 3 ends of relay J 1 link to each other 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 R 3 with after light-emitting diode H1 connects again with electrochemical capacitor C2; C3 is in parallel; electrochemical capacitor C2; the positive pole of C3; one end of resistance R 3 links to each other and links to each other 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 links to each other and ground connection; the tip side 2 of relay J 1; line bag end 3 is respectively by resistance R 2; the A of R1 and double-point double-throw switch K1; A ' end links to each other; the B of double-point double-throw switch K1; B ' end links to each other the C of double-point double-throw switch K1 with the tip side 1 of relay J 1; C ' holds ground connection.The residing position of double-point double-throw switch K1 shown in Fig. 2 is off-state.
The below narrates the principle of this circuit:
Consult Fig. 3, during double-point double-throw switch K1 adhesive, its A, A ' end link to each other with B, B ' end, DC power supply 10 is by 1 pair of electrochemical capacitor C1 charging of resistance R, to electrochemical capacitor C2, C3 charging, rear relay J1 adhesive is communicated with DC power supply 10 and executive circuit 30 by R2, light-emitting diode H1 is bright, plays indicative function.When Vin to electrochemical capacitor C1, C2, when C3 charges, by the metering function of resistance R 1 and R2, reduce the moment impact electric current of circuit.
Consult Fig. 4, when double-point double-throw switch K1 disconnected, its A, A ' end linked to each other with C, C ' end, and electrochemical capacitor C1 is connected to ground connection discharge by resistance R 1, and when guaranteeing that switch disconnects, relay J 1 disconnects fast, cuts off the connection that DC power supply 10 is connected with executive circuit.Electrochemical capacitor C2, C3 discharge by resistance R 2 ground connection simultaneously, output protection circuit 20 no-output voltages when guaranteeing double-point double-throw switch K1 disconnection, and indicator light extinguishes fast simultaneously.
Claims (2)
1. a DC power supply output protection circuit is characterized in that: be provided with output protection circuit (20) between DC power supply (10) and executive circuit (30).
2. DC power supply output protection circuit as claimed in claim 1; it is characterized in that: 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) links to each other; the line Bao Yiduan 3 of relay J 1 links to each other 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 R 3 with after light-emitting diode H1 connects again with electrochemical capacitor C2; C3 is in parallel; electrochemical capacitor C2; the positive pole of C3; one end of resistance R 3 links to each other and links to each other 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 links to each other and ground connection; the tip side 2 of relay J 1; line bag end 3 is respectively by resistance R 2; the A of R1 and double-point double-throw switch K1; A ' end links to each other; the B of double-point double-throw switch K1; B ' end links to each other the C of double-point double-throw switch K1 with the tip side 1 of relay J 1; 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 true CN103066568A (en) | 2013-04-24 |
| CN103066568B 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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11085624B2 (en) | 2018-02-23 | 2021-08-10 | Signify Holding B.V. | Lighting unit with a protection circuit and method of connecting a lighting unit and a protection circuit |
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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11085624B2 (en) | 2018-02-23 | 2021-08-10 | Signify Holding B.V. | Lighting unit with a protection circuit and method of connecting a lighting unit and a protection circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103066568B (en) | 2015-11-04 |
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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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