CN102723703A - Surge current suppression circuit and lighting fixture - Google Patents
Surge current suppression circuit and lighting fixture Download PDFInfo
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- CN102723703A CN102723703A CN201110077078XA CN201110077078A CN102723703A CN 102723703 A CN102723703 A CN 102723703A CN 201110077078X A CN201110077078X A CN 201110077078XA CN 201110077078 A CN201110077078 A CN 201110077078A CN 102723703 A CN102723703 A CN 102723703A
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Abstract
The present invention relates to a surge current suppression circuit, comprising an electrolytic capacitor in series with a surge current suppression resistor, wherein the electrolytic capacitor and the surge current suppression resistor, after being connected in series, are in parallel with two ends of a power supply, and the electrolytic capacitor is connected with an anode of the power supply, and the surge current suppression resistor is connected with a cathode of the power supply. The surge current suppression circuit is characterized in that: the suppression circuit also comprises a charging resistor in series with a delay capacitor, wherein the charging resistor and the delay capacitor, after being connected in series, are in parallel with the two ends of the power supply, and the charging resistor is connected with the anode of the power supply and the delay capacitor is connected with the cathode of the power supply; the suppression circuit also comprises a switch tube, wherein a controlling end of the switch tube is connected with a public end connected by both the charging resistor and the delay capacitor, an input end of the switch tube is connected with a public end connected by both the electrolytic capacitor and the surge current suppression resistor, and an output end of the switch tube is connected with the cathode of the power supply. The surge current suppression circuit, not only can suppress the surge current effectively, but also has lower power consumption. The surge current suppression circuit also has relatively low cost due to simple structure.
Description
[technical field]
The present invention relates to circuit protection, especially relate to a kind of surge current suppression circuit and use the lighting of this surge current suppression circuit.
[background technology]
Electrochemical capacitor not only as energy-storage travelling wave tube, and has good filter action in circuit design, so obtained extensive use.Characteristic according to electrochemical capacitor is intrinsic can know that electrochemical capacitor is equivalent to instantaneous short circuit at powered on moment, can produce very big surge current (can reach 100A), can cause the overcurrent protective device misoperation.
For avoiding the misoperation of overcurrent protective device, need to adopt special-purpose surge suppressing device or series connection power resistor to suppress the generation of surge current.But special-purpose surge suppressing device volume is very big, cost an arm and a leg, and is not suitable for use in all occasions; Though and the series connection power resistor is with low cost, surge current just can impact in a flash what power on, and power resistor will consume significant amount of energy after this, reduces the efficient of circuit greatly.
[summary of the invention]
Based on this, the surge current suppression circuit that is necessary that a kind of low cost is provided and can reduces electric energy loss.
A kind of surge current suppression circuit; The electrochemical capacitor and the surge current that comprise series connection suppress resistance; Said electrochemical capacitor and surge current suppress to be connected in parallel on both ends of power after resistance is connected and said electrochemical capacitor connects positive source, and said surge current suppresses resistance and connects power cathode, also comprises the charging resistor and the delay capacitor of series connection; The two ends and the said charging resistor that are connected in parallel on power supply after said charging resistor and the delay capacitor series connection connect positive source; Said delay capacitor connects power cathode, also comprises switching tube, and said control end of switching tube is connected the common port that said charging resistor is connected with delay capacitor; The input of said switching tube is connected said electrochemical capacitor and suppresses the common port that resistance is connected with surge current, and said output end of switching tube connects power cathode.
Preferably, said switching tube is a N type metal-oxide-semiconductor, and said control end is the grid of N type metal-oxide-semiconductor, and said input is the source electrode of N type metal-oxide-semiconductor, and said output is the drain electrode of N type metal-oxide-semiconductor.
Preferably, said switching tube is a triode, and said control end is the base stage of triode, and said input is the collector electrode of triode, and said output is the emitter of triode.
Preferably, said delay capacitor is a ceramic disc capacitor.
Preferably, the quantity of said electrochemical capacitor is two, and is connected after parallel with one another between the input and positive source of switching tube.
A kind of lighting; Comprise load and surge current suppression circuit; Said surge current suppression circuit comprises that the electrochemical capacitor of series connection and surge current suppress resistance, and said electrochemical capacitor and surge current suppress to be connected in parallel on both ends of power after resistance is connected and said electrochemical capacitor connects positive source, and said surge current suppresses resistance and connects power cathode; The charging resistor and the delay capacitor that also comprise series connection; The two ends and the said charging resistor that are connected in parallel on power supply after said charging resistor and the delay capacitor series connection connect positive source, and said delay capacitor connects power cathode, also comprises switching tube; Said control end of switching tube is connected the common port that said charging resistor is connected with delay capacitor; The input of said switching tube is connected said electrochemical capacitor and suppresses the common port that resistance is connected with surge current, and said output end of switching tube connects power cathode, and said load is connected the two ends of said power supply.
Preferably, said switching tube is a N type metal-oxide-semiconductor, and said control end is the grid of N type metal-oxide-semiconductor, and said input is the source electrode of N type metal-oxide-semiconductor, and said output is the drain electrode of N type metal-oxide-semiconductor.
Preferably, said switching tube is a triode, and said control end is the base stage of triode, and said input is the collector electrode of triode, and said output is the emitter of triode.
Preferably, said delay capacitor is a ceramic disc capacitor.
Preferably, the quantity of said electrochemical capacitor is two, and is connected after parallel with one another between the input and positive source of switching tube.
Above-mentioned surge current suppression circuit and lighting in the circuit that uses electrochemical capacitor, not only can suppress resistance through surge current and suppress surge current effectively, and reduce the power consumption that surge current suppresses resistance in the stable back of circuit.This surge current suppression circuit is also because of simple in structure, so cost is lower.
[description of drawings]
Fig. 1 is the surge current suppression circuit schematic diagram of an embodiment.
[embodiment]
As shown in Figure 1, be the surge current suppression circuit schematic diagram.This surge current suppression circuit comprises that the surge current of charging resistor R1 and delay capacitor C1, the series connection each other of mutual series connection suppresses resistance R 2 and electrochemical capacitor C2, switching tube Q1.Be connected in parallel on the two ends of power supply Vin after electricity charging resistor R1 and the delay capacitor C1 series connection, it is anodal that charging resistor R1 meets power supply Vin, and delay capacitor C1 connects power supply Vin negative pole; Surge current suppresses to be connected in parallel on after resistance R 2 and the electrochemical capacitor C2 series connection two ends of power supply Vin, and electrochemical capacitor C2 to meet power supply Vin anodal, surge current suppresses resistance R 2 and connects power supply Vin negative pole.The control end of switching tube Q1 is connected the common port that charging resistor R1 is connected with delay capacitor C1, and the input of switching tube Q1 is connected surge current and suppresses the common port that resistance R 2 is connected with electrochemical capacitor C2, the output head grounding of switching tube Q1.
Switching tube Q1 in the foregoing circuit can be N type metal-oxide-semiconductor, and then said control end is the grid of N type metal-oxide-semiconductor, and said input is the source electrode of N type metal-oxide-semiconductor, and said output is the drain electrode of N type metal-oxide-semiconductor.Switching tube Q1 also can be triode, and then said control end is the base stage of triode, and said input is the collector electrode of triode, and said output is the emitter of triode.Switching tube Q1 in the present embodiment adopts N type metal-oxide-semiconductor.
The electrical characteristics of delay capacitor C1 are different with electrochemical capacitor C2, can not be equivalent to short circuit at powered on moment, have certain voltage but under power supply Vin, charge to.In the present embodiment, delay capacitor C1 is preferably ceramic disc capacitor.
In addition, when a plurality of electrochemical capacitor was arranged in circuit, the capacitor C parallelly connected with electrochemical capacitor C2 3 that for example increases among Fig. 1 can be connected between the input and power supply Vin positive pole of switching tube Q1 after a plurality of electrochemical capacitor parallel connections, can suppress surge current equally.
The operation principle of this circuit below is described:
When input power supply Vin, because the existence of delay capacitor C1, the control end voltage of switching tube Q1 is zero, and switching tube Q1 is in off-state.Simultaneously, connect because electrochemical capacitor C2 suppresses resistance R 2 with surge current, the surge current that the moment of input power supply Vin produces is suppressed resistance R 2 by surge current and is suppressed at less value.
Subsequently; Power supply Vin charges to delay capacitor C1 through charging resistor R1; Thereby make the control end voltage of switching tube Q1 raise gradually, when the voltage of control end reaches the conducting voltage of switching tube Q1, switching tube Q1 conducting; Surge current is suppressed the shorted on both ends (when switching tube Q1 is N type metal-oxide-semiconductor) of resistance R 2 or makes its two ends have less resistance (when switching tube Q1 is triode), thereby the power consumption that makes surge current suppress resistance R 2 reduces significantly.
Use the lighting of the surge current suppression circuit of the foregoing description, can load is parallelly connected with this surge current suppression circuit, make load be connected the two ends of power supply Vin.
Above-mentioned surge current suppression circuit and lighting in the circuit that uses electrochemical capacitor, not only can suppress resistance through surge current and suppress surge current effectively, and reduce the power consumption that surge current suppresses resistance in the stable back of circuit.This surge current suppression circuit is also because of simple in structure, so cost is lower.
The above embodiment has only expressed several kinds of execution modes of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the present invention's design, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with accompanying claims.
Claims (10)
1. surge current suppression circuit; The electrochemical capacitor C2 and the surge current that comprise series connection suppress resistance R 2; Said electrochemical capacitor C2 and surge current suppress to be connected in parallel on both ends of power after resistance R 2 is connected and said electrochemical capacitor C2 connects positive source; Said surge current suppresses resistance R 2 and connects power cathode, it is characterized in that, also comprises the charging resistor R1 and the delay capacitor C1 of series connection; The two ends and the said charging resistor R1 that are connected in parallel on power supply after said charging resistor R1 and the delay capacitor C1 series connection connect positive source; Said delay capacitor C1 connects power cathode, also comprises switching tube Q1, and the control end of said switching tube Q1 is connected the common port that said charging resistor R1 is connected with delay capacitor C1; The input of said switching tube Q1 is connected said electrochemical capacitor C2 and suppresses the common port that resistance R 2 is connected, the output termination power cathode of said switching tube Q1 with surge current.
2. surge current suppression circuit as claimed in claim 1 is characterized in that, said switching tube Q1 is a N type metal-oxide-semiconductor, and said control end is the grid of N type metal-oxide-semiconductor, and said input is the source electrode of N type metal-oxide-semiconductor, and said output is the drain electrode of N type metal-oxide-semiconductor.
3. surge current suppression circuit as claimed in claim 1 is characterized in that, said switching tube Q1 is a triode, and said control end is the base stage of triode, and said input is the collector electrode of triode, and said output is the emitter of triode.
4. surge current suppression circuit as claimed in claim 1 is characterized in that, said delay capacitor C1 is a ceramic disc capacitor.
5. surge current suppression circuit as claimed in claim 1 is characterized in that, the quantity of said electrochemical capacitor C2 is two, and is connected after parallel with one another between the input and positive source of switching tube Q1.
6. lighting; Comprise load and surge current suppression circuit, it is characterized in that said surge current suppression circuit comprises that the electrochemical capacitor C2 of series connection and surge current suppress resistance R 2; Said electrochemical capacitor C2 and surge current suppress to be connected in parallel on both ends of power after resistance R 2 is connected and said electrochemical capacitor C2 connects positive source; Said surge current suppresses resistance R 2 and connects power cathode, also comprises the charging resistor R1 and the delay capacitor C1 of series connection, and the two ends and the said charging resistor R1 that are connected in parallel on power supply after said charging resistor R1 and the delay capacitor C1 series connection connect positive source; Said delay capacitor C1 connects power cathode; Also comprise switching tube Q1, the control end of said switching tube Q1 is connected the common port that said charging resistor R1 is connected with delay capacitor C1, and the input of said switching tube Q1 is connected said electrochemical capacitor C2 and suppresses the common port that resistance R 2 is connected with surge current; The output termination power cathode of said switching tube Q1, said load is connected the two ends of said power supply.
7. lighting as claimed in claim 6 is characterized in that, said switching tube Q1 is a N type metal-oxide-semiconductor, and said control end is the grid of N type metal-oxide-semiconductor, and said input is the source electrode of N type metal-oxide-semiconductor, and said output is the drain electrode of N type metal-oxide-semiconductor.
8. lighting as claimed in claim 6 is characterized in that, said switching tube Q1 is a triode, and said control end is the base stage of triode, and said input is the collector electrode of triode, and said output is the emitter of triode.
9. lighting as claimed in claim 6 is characterized in that, said delay capacitor C1 is a ceramic disc capacitor.
10. lighting as claimed in claim 6 is characterized in that, the quantity of said electrochemical capacitor C2 is two, and is connected after parallel with one another between the input and positive source of switching tube Q1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110077078XA CN102723703A (en) | 2011-03-29 | 2011-03-29 | Surge current suppression circuit and lighting fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110077078XA CN102723703A (en) | 2011-03-29 | 2011-03-29 | Surge current suppression circuit and lighting fixture |
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| Publication Number | Publication Date |
|---|---|
| CN102723703A true CN102723703A (en) | 2012-10-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110077078XA Pending CN102723703A (en) | 2011-03-29 | 2011-03-29 | Surge current suppression circuit and lighting fixture |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103096603A (en) * | 2013-01-30 | 2013-05-08 | 广东新昇电业科技股份有限公司 | Actuator of light-emitting diode (LED) for lighting |
| CN103633633A (en) * | 2013-12-18 | 2014-03-12 | 四川卫士通信息安全平台技术有限公司 | Restraining method of startup input inrush current of power supply |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030062880A1 (en) * | 2001-10-03 | 2003-04-03 | Minoru Sudou | Booster type switching regulator |
| CN201029021Y (en) * | 2006-08-18 | 2008-02-27 | 杭州华三通信技术有限公司 | Electrical start delaying circuit of positive power |
| CN101150249A (en) * | 2006-09-18 | 2008-03-26 | 深圳迈瑞生物医疗电子股份有限公司 | Method for restraining late-class circuit hot swap impact current and its buffering asynchronous start circuit |
| CN101657057A (en) * | 2009-08-21 | 2010-02-24 | 深圳市金流明光电技术有限公司 | LED power circuit |
-
2011
- 2011-03-29 CN CN201110077078XA patent/CN102723703A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030062880A1 (en) * | 2001-10-03 | 2003-04-03 | Minoru Sudou | Booster type switching regulator |
| CN201029021Y (en) * | 2006-08-18 | 2008-02-27 | 杭州华三通信技术有限公司 | Electrical start delaying circuit of positive power |
| CN101150249A (en) * | 2006-09-18 | 2008-03-26 | 深圳迈瑞生物医疗电子股份有限公司 | Method for restraining late-class circuit hot swap impact current and its buffering asynchronous start circuit |
| CN101657057A (en) * | 2009-08-21 | 2010-02-24 | 深圳市金流明光电技术有限公司 | LED power circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103096603A (en) * | 2013-01-30 | 2013-05-08 | 广东新昇电业科技股份有限公司 | Actuator of light-emitting diode (LED) for lighting |
| CN103633633A (en) * | 2013-12-18 | 2014-03-12 | 四川卫士通信息安全平台技术有限公司 | Restraining method of startup input inrush current of power supply |
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Application publication date: 20121010 |