CN202435681U - Wide voltage input linear constant current LED (Light-Emitting Diode) driving circuit - Google Patents
Wide voltage input linear constant current LED (Light-Emitting Diode) driving circuit Download PDFInfo
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- CN202435681U CN202435681U CN2012200062875U CN201220006287U CN202435681U CN 202435681 U CN202435681 U CN 202435681U CN 2012200062875 U CN2012200062875 U CN 2012200062875U CN 201220006287 U CN201220006287 U CN 201220006287U CN 202435681 U CN202435681 U CN 202435681U
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Abstract
The utility model relates to a wide voltage input linear constant current LED (Light-Emitting Diode) driving circuit. The wide voltage input linear constant current LED driving circuit is characterized by comprising an AC (Alternate Current) input overvoltage over-current protecting circuit, a rectifying circuit, a voltage regulating circuit, a constant current driving circuit and an LED array, wherein the AC input overvoltage over-current protecting circuit is connected with the rectifying circuit; the rectifying circuit is connected with the voltage regulating circuit; the voltage regulating circuit is connected with the constant current driving circuit; and the constant current driving circuit is connected with the LED array. The wide voltage input linear constant current LED driving circuit directly works under a main supply 85V-265V AC input voltage; the circuit is suitable for random combination application of LED lighting lamps and is driven by a wide voltage input LED linear constant current; and compared with a switching power supply which is currently widely applied to the LED lighting, a DC/DC conversion part is reduced, so that the aim of reducing the cost is fulfilled.
Description
Technical field
The utility model relates to a kind of wide voltage input line property constant current LED drive circuit.
Background technology
The low pressure constant-current drive technology of the extensive use of LED illumination at present all need increase AC/DC or DC/DC module, can not directly directly drive with the 220V civil power, has so just increased the cost of LED lighting.And the electrically driven (operated) LED of existing AC linear needs operating voltage at 220V in when work, if therefore overtension or cross the low work that all can influence LED designs a kind of LED constant-current drive circuit that can be operated in wide voltage input and be very important.
The utility model content
To the problem that exists in the prior art, the purpose of the utility model is to provide a kind of technical scheme of wide voltage input line property constant current LED drive circuit.
Described a kind of wide voltage input line property constant current LED drive circuit; It is characterized in that comprising exchanging and import over-voltage over-current protection circuit, rectification circuit, voltage-regulating circuit, constant-current drive circuit and led array; Exchanging the input over-voltage over-current protection circuit links to each other with rectification circuit; Rectification circuit links to each other with voltage-regulating circuit, and voltage-regulating circuit links to each other with constant-current drive circuit, and constant-current drive circuit connects led array.
Described a kind of wide voltage input line property constant current LED drive circuit is characterized in that described interchange input over-voltage over-current protection circuit is made up of the piezo-resistance MY of overcurrent protection resettable fuse WHPTC and overvoltage protection.
Described a kind of wide voltage input line property constant current LED drive circuit is characterized in that described rectification circuit is made up of the rectifier bridge that diode D1-D4 constitutes.
Described a kind of wide voltage input line property constant current LED drive circuit is characterized in that described voltage-regulating circuit is made up of resistance R 1, resistance R 2, resistance R 3, voltage stabilizing didoe D5, voltage stabilizing didoe D6, triode V1 and FET V2.
Described a kind of wide voltage input line property constant current LED drive circuit is characterized in that described constant-current drive circuit is made up of current regulator diode D7 and capacitor C.
Described a kind of wide voltage input line property constant current LED drive circuit is characterized in that described led array is formed by n LED serial connection.
The utility model on-line operation is under civil power 85V-265V AC-input voltage; This circuit is suitable for the Combination application of any LED lighting; It is the circuit of the linear constant-current driving of wide voltage input LED; Switching Power Supply than present LED illumination extensive use has reduced the DC/DC conversion portion, reaches the purpose that has reduced cost.
Description of drawings
Fig. 1 is the structured flowchart of the utility model;
Fig. 2 is the circuit theory diagrams of the utility model;
Among the figure: 1-exchanges input over-voltage over-current protection circuit, 2-rectification circuit, 3-voltage-regulating circuit, 4-constant-current drive circuit, 5-LED array.
Embodiment
Below in conjunction with Figure of description the utility model is further specified:
A kind of wide voltage input line property constant current LED drive circuit; Comprise and exchange input over-voltage over-current protection circuit 1, rectification circuit 2, voltage-regulating circuit 3, constant-current drive circuit 4 and led array 5; Exchanging input over-voltage over-current protection circuit 1 links to each other with rectification circuit 2; Rectification circuit 2 links to each other with voltage-regulating circuit 3, and voltage-regulating circuit 3 links to each other with constant-current drive circuit 4, and constant-current drive circuit 4 connects led array 5.Interchange input over-voltage over-current protection circuit 1 is made up of the piezo-resistance MY of overcurrent protection resettable fuse WHPTC and overvoltage protection; Rectification circuit 2 is made up of the rectifier bridge that diode D1-D4 constitutes; Voltage-regulating circuit 3 is made up of resistance R 1, resistance R 2, resistance R 3, voltage stabilizing didoe D5, voltage stabilizing didoe D6, triode V1 and FET V2; Constant-current drive circuit 4 is made up of current regulator diode D7 and capacitor C, and led array 5 is formed by n LED serial connection.
Overcurrent protection resettable fuse WHPTC is connected on power input; The piezo-resistance MY of overvoltage protection is connected in parallel on power input; Power supply is exported after the rectification circuit rectification; Output connects an end of resistance R 1 and an end of resistance R 2 respectively; The other end of resistance R 1 links to each other with the other end of resistance R 2, and the continuous end of resistance R 1 and resistance R 2 is connected the base stage of triode V1 through voltage stabilizing didoe D5, and the emitter of triode V1 connects the positive pole of voltage stabilizing didoe D6, the source electrode of FET V2, the positive pole of diode D4; The collector electrode of triode V1 connects an end of resistance R 3, the grid of FET V2, the negative pole of voltage stabilizing didoe D6; The other end of resistance R 3 connects the negative pole of diode D3, an end of capacitor C, the positive pole of current regulator diode D7, and the drain electrode of FET V2 connects the other end of capacitor C, the negative pole of led array, and the negative pole of current regulator diode D7 connects the positive pole of led array.
The utility model on-line operation is under civil power 85V-265V AC-input voltage; This circuit is suitable for the Combination application of any LED lighting; It is the circuit of the linear constant-current driving of wide voltage input LED; Switching Power Supply than present LED illumination extensive use has reduced the DC/DC conversion portion, reaches the purpose that has reduced cost.
Claims (6)
1. one kind wide voltage input line property constant current LED drive circuit; It is characterized in that comprising exchanging and import over-voltage over-current protection circuit, rectification circuit, voltage-regulating circuit, constant-current drive circuit and led array; Exchanging the input over-voltage over-current protection circuit links to each other with rectification circuit; Rectification circuit links to each other with voltage-regulating circuit, and voltage-regulating circuit links to each other with constant-current drive circuit, and constant-current drive circuit connects led array.
2. a kind of wide voltage input line property constant current LED drive circuit according to claim 1 is characterized in that described interchange input over-voltage over-current protection circuit is made up of the piezo-resistance MY of overcurrent protection resettable fuse WHPTC and overvoltage protection.
3. a kind of wide voltage input line property constant current LED drive circuit according to claim 1 is characterized in that described rectification circuit is made up of the rectifier bridge that diode D1-D4 constitutes.
4. a kind of wide voltage input line property constant current LED drive circuit according to claim 1 is characterized in that described voltage-regulating circuit is made up of resistance R 1, resistance R 2, resistance R 3, voltage stabilizing didoe D5, voltage stabilizing didoe D6, triode V1 and FET V2.
5. a kind of wide voltage input line property constant current LED drive circuit according to claim 1 is characterized in that described constant-current drive circuit is made up of current regulator diode D7 and capacitor C.
6. a kind of wide voltage input line property constant current LED drive circuit according to claim 1 is characterized in that described led array is formed by n LED serial connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200062875U CN202435681U (en) | 2012-01-09 | 2012-01-09 | Wide voltage input linear constant current LED (Light-Emitting Diode) driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200062875U CN202435681U (en) | 2012-01-09 | 2012-01-09 | Wide voltage input linear constant current LED (Light-Emitting Diode) driving circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202435681U true CN202435681U (en) | 2012-09-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200062875U Expired - Fee Related CN202435681U (en) | 2012-01-09 | 2012-01-09 | Wide voltage input linear constant current LED (Light-Emitting Diode) driving circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN202435681U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103002643A (en) * | 2012-11-27 | 2013-03-27 | 杭州科凡照明电器有限公司 | Constant-current drive circuit used for LED (Light Emitting Diode) lamp |
| CN103874263A (en) * | 2012-12-10 | 2014-06-18 | 江苏施诺照明有限公司 | Novel LED drive power supply |
| CN103945610A (en) * | 2014-04-21 | 2014-07-23 | 王开 | High-speed pulsation constant current LED driving power circuit |
| WO2014117606A1 (en) * | 2013-01-31 | 2014-08-07 | 四川新力光源股份有限公司 | Alternating current rectifying circuit and alternating current rectifying method for driving led module |
-
2012
- 2012-01-09 CN CN2012200062875U patent/CN202435681U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103002643A (en) * | 2012-11-27 | 2013-03-27 | 杭州科凡照明电器有限公司 | Constant-current drive circuit used for LED (Light Emitting Diode) lamp |
| CN103874263A (en) * | 2012-12-10 | 2014-06-18 | 江苏施诺照明有限公司 | Novel LED drive power supply |
| WO2014117606A1 (en) * | 2013-01-31 | 2014-08-07 | 四川新力光源股份有限公司 | Alternating current rectifying circuit and alternating current rectifying method for driving led module |
| US9320104B2 (en) | 2013-01-31 | 2016-04-19 | Sichuan Sunfor Light Co., Ltd. | Alternating current rectifying circuit and alternating current rectifying method for driving LED module |
| EP2953430A4 (en) * | 2013-01-31 | 2016-09-14 | Sichuan Sunfor Light Co Ltd | Alternating current rectifying circuit and alternating current rectifying method for driving led module |
| CN103945610A (en) * | 2014-04-21 | 2014-07-23 | 王开 | High-speed pulsation constant current LED driving power circuit |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120912 Termination date: 20180109 |