CN202026081U - Antispark circuit - Google Patents
Antispark circuit Download PDFInfo
- Publication number
- CN202026081U CN202026081U CN2011200473435U CN201120047343U CN202026081U CN 202026081 U CN202026081 U CN 202026081U CN 2011200473435 U CN2011200473435 U CN 2011200473435U CN 201120047343 U CN201120047343 U CN 201120047343U CN 202026081 U CN202026081 U CN 202026081U
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- Prior art keywords
- charging resistor
- power supply
- switching tube
- electric capacity
- output
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Abstract
The utility model relates to an antispark circuit which includes a capacitance, a charging resistor, and a switch tube. One end of the charging resistor is connected with the anode of a power supply, and the other end is connected with the capacitance. The other end of the capacitance without being connected with the charging resistor is connected with the cathode of a power supply, and the end of the capacitance connected with the charging resistor is connected with a control terminal of the switch tube. The switch tube includes a control terminal, an input terminal, and an output terminal. The output terminal of the switch tube is connected with the end of the capacitance without being connected with the charging resistor and the input terminal of the switch tube is served as the output terminal of the cathode of the power supply. The antispark circuit controls the cathode of the power supply. The utility model also relates to an antispark circuit which controls the anode of the power supply. The charging resistor and the capacitance of the antispark circuit mutually form a delay unit. Because of the delayed conduction of the entire circuit, a plug is properly contacted when the circuit is conducted, thus avoiding the spark caused by a high impedance big current, and consequently prolonging the service lifetime of an electrical appliance, and improving the safety factor of a product.
Description
[technical field]
The utility model relates to electronic circuit field, relates in particular to a kind of arc-suppression circuit that DC plug connects AC power that is used for.
[background technology]
Nowadays the electrical equipment of a lot of middle low powers adopts the direct current input mostly, as minitype projection machine, notebook computer, radio telephone etc.Its method of supplying power to generally is to add a DC power source adapter, connects AC power by DC plug again and gives electric power supply.Because the power supply input circuit of electrical appliance all has bigger electric capacity to exist, having a bigger electric current when DC plug is inserted the moment of socket charges to electric capacity, and can form very big basic resistance because the plug contact is unstable, thereby produce significantly spark.
Traditional processing scheme has three kinds: 1, special-purpose three-way DC plug mode, except the positive pole of power supply and negative pole, have more a control line, control line contacts at last, both positive and negative polarity connects when starting power supply like this, avoid the powered on moment sparking, as Hewlett-Packard's notebook computer, its shortcoming is to use special-purpose three pin plug and lead-in wire, and cost is higher.2, cover mode, the centre cap of plug is shorter, and contact shell earlier when plug inserts touches centre cap then, also has this moment spark to produce, but occurs in plug inside, and this mode of covering just allows the people be not aware of, as minitype projection machine.3, need not comprehend fully, as radio telephone.
The shortcoming that plug produces spark has three: 1, the spark that powers on quickens the plugs and sockets oxidation, causes loose contact.2, the heat of sparking generation causes plastic cement part easy deformation, and the time has been grown and caused loose contact.If 3 have inflammable articles on every side, cause fire to take place when powering on easily.
[utility model content]
Based on this, be necessary the arc-suppression circuit that provides a kind of circuit structure simple, with low cost.
A kind of arc-suppression circuit comprises electric capacity, charging resistor and switching tube; One end of described charging resistor is used to connect the positive pole of power supply, and the other end links to each other with described electric capacity, and an end that does not connect charging resistor of described electric capacity is used to connect the negative pole of power supply, the described control end of switching tube of a termination that described electric capacity links to each other with charging resistor; Described switching tube comprises control end, input and output, and described output end of switching tube connects an end that does not connect charging resistor of described electric capacity, and the input of described switching tube is as the output of the negative pole of described power supply.
Preferably, described switching tube is a N type metal-oxide-semiconductor, and described control end is a grid, and described input is drain electrode, and described output is a source electrode.
Preferably, described switching tube is a NPN type triode, and described control end is that the described input of base stage is a collector electrode, and described output is an emitter.
Preferably, also comprise diode and discharge resistance; The positive pole of described diode connects the end that described electric capacity links to each other with charging resistor, and the negative pole of described diode connects the positive pole of described power supply; Described discharge resistance is connected between the positive pole and negative pole of described power supply.
Above-mentioned arc-suppression circuit is the negative pole of control power supply, also is necessary to provide a kind of arc-suppression circuit of controlling positive source.
A kind of arc-suppression circuit comprises electric capacity, charging resistor and switching tube; One end of described charging resistor is used to connect the negative pole of power supply, and the other end links to each other with described electric capacity, and an end that does not connect charging resistor of described electric capacity is used to connect the positive pole of power supply, the described control end of switching tube of a termination that described electric capacity links to each other with charging resistor; Described switching tube comprises control end, input and output, and the input of described switching tube connects an end that does not connect charging resistor of described electric capacity, and described output end of switching tube is as the output of the positive pole of described power supply.
Preferably, described switching tube is a P type metal-oxide-semiconductor, and described control end is a grid, and described input is a source electrode, and described output is drain electrode.
Preferably, described switching tube is the positive-negative-positive triode, and described control end is a base stage, and described input is an emitter, and described output is a collector electrode.
Preferably, also comprise diode and discharge resistance; The negative pole of described diode connects the end that described electric capacity links to each other with charging resistor, and the positive pole of described diode connects the negative pole of described power supply; Described discharge resistance is connected between the positive pole and negative pole of described power supply.
Above-mentioned arc-suppression circuit charging resistor and electric capacity constitute delay unit jointly, and behind the plug insertion socket, power supply charges to electric capacity by charging resistor, when the voltage on the electric capacity has reached the conducting voltage of switching tube, and the switching tube conducting, electrical appliance powers on and starts working.Because plug has contacted well in the entire circuit time-delay conducting, conducting, therefore the electric spark of having avoided high resistant Chinese People's Anti-Japanese Military and Political College electric current to cause.Can prolong the useful life of electrical equipment, improve the coefficient of safety of product.
[description of drawings]
Fig. 1 is the circuit theory diagrams of arc-suppression circuit among the embodiment;
Fig. 2 is the circuit theory diagrams of arc-suppression circuit among another embodiment.
[embodiment]
For the purpose of this utility model, feature and advantage can more be become apparent, embodiment of the present utility model is described in detail below in conjunction with accompanying drawing.
Fig. 1 is the circuit theory diagrams of arc-suppression circuit among the embodiment.Arc-suppression circuit 100 comprises capacitor C 1, charging resistor R2 and switching tube Q1.The end of charging resistor R2 is used to connect the positive pole of power supply, and the other end links to each other with capacitor C 1, and an end that does not meet charging resistor R2 of capacitor C 1 is used to connect the negative pole of power supply, the control end of the termination switching tube Q1 that capacitor C 1 links to each other with charging resistor R2.Switching tube Q1 comprises control end, input and output, and the output of switching tube Q1 connects an end that does not meet charging resistor R2 of capacitor C 1, and the input of switching tube Q1 is as the output of the negative pole of power supply.
In the present embodiment, switching tube Q1 is a N type metal-oxide-semiconductor, and control end is a grid, and input is drain electrode, and output is a source electrode.In other embodiments, switching tube Q1 also can adopt other switch elements, NPN type triode for example, and this moment, control end was a base stage, and input is a collector electrode, and output is an emitter.
Arc-suppression circuit 100 is arranged on plug end.Charging resistor R2 and capacitor C 1 common formation delay unit, behind the plug insertion socket, power supply charges to capacitor C 1 by charging resistor R2, when the voltage on the capacitor C 1 has reached the conducting voltage of switching tube Q1, switching tube Q1 conducting, electrical appliance powers on and starts working.The capacitance of the resistance value of charging resistor R2 and capacitor C 1 has determined the time of switching tube Q1 time-delay conducting jointly.Because plug has contacted well in the entire circuit time-delay conducting, conducting, therefore the electric spark of having avoided high resistant Chinese People's Anti-Japanese Military and Political College electric current to cause.
In the present embodiment, arc-suppression circuit 100 also comprises diode D1 and discharge resistance R1.The positive pole of diode D1 connects the end that capacitor C 1 links to each other with charging resistor R2, and the negative pole of diode D1 connects the positive pole of power supply.Discharge resistance R1 is connected between the positive pole and negative pole of power supply.After power supply disconnected, capacitor C 1 was by diode D1 and discharge resistance R1 discharge, and capacitor C 1 charge stored is released totally, and the delay function of circuit is finished in the charging once more of capacitor C 1 when helping next time powering on.Diode D1 is set accelerates the velocity of discharge, can satisfy the demand of fast powering-up when next time powering on.
The foregoing description is the embodiment of the break-make of control power cathode, and Fig. 2 is the circuit theory diagrams of arc-suppression circuit among another embodiment (control positive source).Arc-suppression circuit 200 comprises capacitor C 2, charging resistor R4 and switching tube Q2.The end of charging resistor R4 is used to connect the negative pole of power supply, and the other end links to each other with capacitor C 2, and an end that does not meet charging resistor R3 of capacitor C 2 is used to connect the positive pole of power supply, the control end of the termination switching tube Q2 that capacitor C 2 links to each other with charging resistor R4.Switching tube Q2 comprises control end, input and output, and the input of switching tube Q2 connects an end that does not meet charging resistor R4 of capacitor C 2, and the output of switching tube Q2 is as the output of the positive pole of power supply.
In the present embodiment, switching tube Q2 is a P type metal-oxide-semiconductor, and control end is a grid, and input is a source electrode, and output is drain electrode.In other embodiments, switching tube also can adopt other switch elements, positive-negative-positive triode for example, and this moment, control end was a base stage, and input is an emitter, and output is a collector electrode.
In the present embodiment, arc-suppression circuit 200 also comprises diode D2 and discharge resistance R3.The negative pole of diode D2 connects the end that capacitor C 2 links to each other with charging resistor R4, and the positive pole of diode D2 connects the negative pole of power supply.Discharge resistance R3 is connected between the positive pole and negative pole of power supply.
Above-mentioned arc-suppression circuit is owing to adopt the time-delay supply power mode, and the spark of eliminating plugs and sockets fully produces, and can prolong the useful life of electrical equipment, improves the coefficient of safety of product.
The above embodiment has only expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (8)
1. an arc-suppression circuit is characterized in that, comprises electric capacity, charging resistor and switching tube;
One end of described charging resistor is used to connect the positive pole of power supply, and the other end links to each other with described electric capacity, and an end that does not connect charging resistor of described electric capacity is used to connect the negative pole of power supply, the described control end of switching tube of a termination that described electric capacity links to each other with charging resistor;
Described switching tube comprises control end, input and output, and described output end of switching tube connects an end that does not connect charging resistor of described electric capacity, and the input of described switching tube is as the output of the negative pole of described power supply.
2. arc-suppression circuit according to claim 1 is characterized in that, described switching tube is a N type metal-oxide-semiconductor, and described control end is a grid, and described input is drain electrode, and described output is a source electrode.
3. arc-suppression circuit according to claim 1 is characterized in that, described switching tube is a NPN type triode, and described control end is a base stage, and described input is a collector electrode, and described output is an emitter.
4. according to any described arc-suppression circuit in the claim 1 to 3, it is characterized in that, also comprise diode and discharge resistance;
The positive pole of described diode connects the end that described electric capacity links to each other with charging resistor, and the negative pole of described diode connects the positive pole of described power supply;
Described discharge resistance is connected between the positive pole and negative pole of described power supply.
5. an arc-suppression circuit is characterized in that, comprises electric capacity, charging resistor and switching tube;
One end of described charging resistor is used to connect the negative pole of power supply, and the other end links to each other with described electric capacity, and an end that does not connect charging resistor of described electric capacity is used to connect the positive pole of power supply, the described control end of switching tube of a termination that described electric capacity links to each other with charging resistor;
Described switching tube comprises control end, input and output, and the input of described switching tube connects an end that does not connect charging resistor of described electric capacity, and described output end of switching tube is as the output of the positive pole of described power supply.
6. arc-suppression circuit according to claim 5 is characterized in that, described switching tube is a P type metal-oxide-semiconductor, and described control end is a grid, and described input is a source electrode, and described output is drain electrode.
7. arc-suppression circuit according to claim 5 is characterized in that, described switching tube is the positive-negative-positive triode, and described control end is a base stage, and described input is an emitter, and described output is a collector electrode.
8. according to any described arc-suppression circuit in the claim 5 to 7, it is characterized in that, also comprise diode and discharge resistance;
The negative pole of described diode connects the end that described electric capacity links to each other with charging resistor, and the positive pole of described diode connects the negative pole of described power supply;
Described discharge resistance is connected between the positive pole and negative pole of described power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200473435U CN202026081U (en) | 2011-02-25 | 2011-02-25 | Antispark circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200473435U CN202026081U (en) | 2011-02-25 | 2011-02-25 | Antispark circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202026081U true CN202026081U (en) | 2011-11-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200473435U Expired - Fee Related CN202026081U (en) | 2011-02-25 | 2011-02-25 | Antispark circuit |
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| Country | Link |
|---|---|
| CN (1) | CN202026081U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017128113A1 (en) * | 2016-01-27 | 2017-08-03 | 深圳市大疆创新科技有限公司 | Power supply control circuitry, electronic speed regulator, unmanned aerial vehicle, and control method |
| CN107231083A (en) * | 2017-07-27 | 2017-10-03 | 深圳市和为顺网络技术有限公司 | DC arc-suppression circuits |
| CN109119030A (en) * | 2018-07-12 | 2019-01-01 | 重庆爱奇艺智能科技有限公司 | A kind of method and apparatus for controlling the back facet current of liquid crystal display |
| CN112510663A (en) * | 2020-11-03 | 2021-03-16 | 厦门芯阳科技股份有限公司 | Spark elimination circuit and method for safe electrification |
-
2011
- 2011-02-25 CN CN2011200473435U patent/CN202026081U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017128113A1 (en) * | 2016-01-27 | 2017-08-03 | 深圳市大疆创新科技有限公司 | Power supply control circuitry, electronic speed regulator, unmanned aerial vehicle, and control method |
| CN107078640A (en) * | 2016-01-27 | 2017-08-18 | 深圳市大疆创新科技有限公司 | Power control circuit, electron speed regulator, unmanned vehicle and control method |
| CN107078640B (en) * | 2016-01-27 | 2018-12-07 | 深圳市大疆创新科技有限公司 | Power control circuit, electron speed regulator, unmanned vehicle and control method |
| CN107231083A (en) * | 2017-07-27 | 2017-10-03 | 深圳市和为顺网络技术有限公司 | DC arc-suppression circuits |
| CN109119030A (en) * | 2018-07-12 | 2019-01-01 | 重庆爱奇艺智能科技有限公司 | A kind of method and apparatus for controlling the back facet current of liquid crystal display |
| CN112510663A (en) * | 2020-11-03 | 2021-03-16 | 厦门芯阳科技股份有限公司 | Spark elimination circuit and method for safe electrification |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Relay flame removal circuit Effective date of registration: 20150908 Granted publication date: 20111102 Pledgee: Industrial Bank Shenzhen branch, Limited by Share Ltd Pledgor: Shenzhen Yatu Digital Video Frequency Technology Co., Ltd. Registration number: 2015990000726 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20160823 Granted publication date: 20111102 |
|
| RINS | Preservation of patent right or utility model and its discharge | ||
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20170823 Granted publication date: 20111102 |
|
| 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: 20111102 Termination date: 20170225 |