CN204795713U - LED step -down voltage stabilizing circuit - Google Patents
LED step -down voltage stabilizing circuit Download PDFInfo
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- CN204795713U CN204795713U CN201520375211.3U CN201520375211U CN204795713U CN 204795713 U CN204795713 U CN 204795713U CN 201520375211 U CN201520375211 U CN 201520375211U CN 204795713 U CN204795713 U CN 204795713U
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- triode
- diode
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- key switch
- pole
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Abstract
The utility model discloses a LED step -down voltage stabilizing circuit, including key switch S1, resistance R1, triode Q1, triode Q2, diode D2 and diode D3, the key switch S1 one end VCC that connects, the key switch S1 other end is connecting resistance R2 respectively, resistance R3 and MOS pipe VS's the S utmost point, triode Q1 base and triode Q2 collecting electrode are connected respectively to the resistance R3 other end, triode Q1 emitter ground, the triode Q1 collecting electrode difference connecting resistance R2 other end and MOS pipe VS's the G utmost point. The utility model discloses LED step -down voltage stabilizing circuit circuit structure is simple, adopts MOS pipe VS cooperation triode Q1 and the whole circuit of triode Q2 control, the low power dissipation, and in addition, diode D2 and diode D3 tandem energy are with spike voltage clamper to the safe value of inductance L1 production, improved circuit stability, especially adapted using widely.
Description
Technical field
The utility model relates to a kind of decompression voltage regulator, specifically a kind of LED decompression voltage regulator.
Background technology
Big current is needed during highlighted LED work, when driving highlighted LED from a voltage source, can with the electric current needed for a suitable series resistance setting, if voltage source is battery, then along with the consumption of battery electric power, the brightness of LED is also successively decreased, but the shortcoming of series resistance is the increase in the power consumption of circuit.
Utility model content
The purpose of this utility model is to provide a kind of LED decompression voltage regulator low in energy consumption, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of LED decompression voltage regulator, comprise key switch S1, resistance R1, triode Q1, triode Q2, diode D2 and diode D3, described key switch S1 one end connects power supply VCC, the key switch S1 other end is contact resistance R2 respectively, the S pole of resistance R3 and metal-oxide-semiconductor VS, the resistance R3 other end is connecting triode Q1 base stage and triode Q2 collector electrode respectively, triode Q1 grounded emitter, the G pole of the triode Q1 collector electrode difference contact resistance R2 other end and metal-oxide-semiconductor VS, described triode Q2 base stage contact resistance R4, the resistance R4 other end connects earth resistance R1 and light-emitting diode D1 negative pole respectively, light-emitting diode D1 positive pole connects ground capacity C1 and inductance L 1 respectively, inductance L 1 other end connects D pole and the diode D3 positive pole of metal-oxide-semiconductor VS respectively, diode D3 positive pole connects ground connection diode D2 negative pole.
As further program of the utility model: described metal-oxide-semiconductor VS adopts IRF9540.
As the utility model further scheme: described diode D2 is voltage stabilizing didoe.
Compared with prior art, the beneficial effects of the utility model are: the utility model LED decompression voltage regulator circuit structure is simple, metal-oxide-semiconductor VS is adopted to coordinate triode Q1 and triode Q2 to control whole circuit, low in energy consumption, in addition, the peak voltage clamper that inductance L 1 produces by diode D2 and diode D3 tandem energy, to safety value, improves circuit stability, is applicable to very much promoting the use of.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of LED decompression voltage regulator.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, a kind of LED decompression voltage regulator, comprise key switch S1, resistance R1, triode Q1, triode Q2, diode D2 and diode D3, key switch S1 one end connects power supply VCC, the key switch S1 other end is contact resistance R2 respectively, the S pole of resistance R3 and metal-oxide-semiconductor VS, the resistance R3 other end is connecting triode Q1 base stage and triode Q2 collector electrode respectively, triode Q1 grounded emitter, the G pole of the triode Q1 collector electrode difference contact resistance R2 other end and metal-oxide-semiconductor VS, triode Q2 base stage contact resistance R4, the resistance R4 other end connects earth resistance R1 and light-emitting diode D1 negative pole respectively, light-emitting diode D1 positive pole connects ground capacity C1 and inductance L 1 respectively, inductance L 1 other end connects D pole and the diode D3 positive pole of metal-oxide-semiconductor VS respectively, diode D3 positive pole connects ground connection diode D2 negative pole.
Metal-oxide-semiconductor VS adopts IRF9540.
Diode D2 is voltage stabilizing didoe.
Operation principle of the present utility model is: when switch on power VCC voltage time, be 0V with the voltage on high-brightness light emitting diode D1 series resistance R1, so, triode Q2 turns off, triode Q1 is saturated, the saturated mode of triode Q1 makes metal-oxide-semiconductor VS conducting, therefore power supply VCC voltage is added on high-brightness light emitting diode D1 by inductance L 1, when the electric current by resistance R1 increases, make triode Q2 conducting, thus triode Q1 ends, so metal-oxide-semiconductor VS turns off, when metal-oxide-semiconductor VS is off state, inductance L 1 continues through diode D2 for LED provides electric current, resistance R1 helps the brightness of control LED, the peak voltage clamper that inductance L 1 produces by diode D2 and diode D3 tandem energy is to safety value, improve circuit stability.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this specification is described according to execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technical scheme in each embodiment also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.
Claims (3)
1. a LED decompression voltage regulator, comprise key switch S1, resistance R1, triode Q1, triode Q2, diode D2 and diode D3, it is characterized in that, described key switch S1 one end connects power supply VCC, the key switch S1 other end is contact resistance R2 respectively, the S pole of resistance R3 and metal-oxide-semiconductor VS, the resistance R3 other end is connecting triode Q1 base stage and triode Q2 collector electrode respectively, triode Q1 grounded emitter, the G pole of the triode Q1 collector electrode difference contact resistance R2 other end and metal-oxide-semiconductor VS, described triode Q2 base stage contact resistance R4, the resistance R4 other end connects earth resistance R1 and light-emitting diode D1 negative pole respectively, light-emitting diode D1 positive pole connects ground capacity C1 and inductance L 1 respectively, inductance L 1 other end connects D pole and the diode D3 positive pole of metal-oxide-semiconductor VS respectively, diode D3 positive pole connects ground connection diode D2 negative pole.
2. LED decompression voltage regulator according to claim 1, is characterized in that, described metal-oxide-semiconductor VS adopts IRF9540.
3. LED decompression voltage regulator according to claim 1, is characterized in that, described diode D2 is voltage stabilizing didoe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520375211.3U CN204795713U (en) | 2015-06-02 | 2015-06-02 | LED step -down voltage stabilizing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520375211.3U CN204795713U (en) | 2015-06-02 | 2015-06-02 | LED step -down voltage stabilizing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204795713U true CN204795713U (en) | 2015-11-18 |
Family
ID=54535671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520375211.3U Expired - Fee Related CN204795713U (en) | 2015-06-02 | 2015-06-02 | LED step -down voltage stabilizing circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204795713U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105813256A (en) * | 2016-03-08 | 2016-07-27 | 何小平 | LED street lamp lighting controller |
-
2015
- 2015-06-02 CN CN201520375211.3U patent/CN204795713U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105813256A (en) * | 2016-03-08 | 2016-07-27 | 何小平 | LED street lamp lighting controller |
| CN105813256B (en) * | 2016-03-08 | 2017-10-10 | 何小平 | A kind of LED street lamp lighting controller |
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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 |
Granted publication date: 20151118 Termination date: 20190602 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |