CN203435183U - LED lamp drive circuit - Google Patents
LED lamp drive circuit Download PDFInfo
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- CN203435183U CN203435183U CN201320416053.2U CN201320416053U CN203435183U CN 203435183 U CN203435183 U CN 203435183U CN 201320416053 U CN201320416053 U CN 201320416053U CN 203435183 U CN203435183 U CN 203435183U
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- led lamp
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Abstract
The utility model discloses an LED lamp drive circuit, comprising an input end, a rectification module, a filtering module, a current-limiting module and an output which are connected in series. The LED lamp drive circuit further comprises a feedback module. The feedback module is connected with the output end and the filtering module. The filtering module is composed of a first diode, a second diode, a third diode, fourth diode and first capacitor. The feedback module comprises a light emitting diode, a photosensitive switch and an LED drive control chip. The light emitting diode and the output end forms a loop, and the photosensitive switch and the light emitting diode are encapsulated together. The LED lamp drive circuit is mainly used for rectifying and filtering alternating current of an outer electrical network, and adopts a closed loop feedback element to control current and voltage of the output end, so that current and voltage output by the output end are reliable, and further, an LED lamp is enabled to operate stably, and the illumination effect and the service life are guaranteed.
Description
Technical field
The utility model belongs to lighting field, relates in particular to a kind of LED lamp drive circuit.
Background technology
LED lamp is applied widely as a kind of efficient lighting device, and when directly civil power being accessed driving LED lamp, there will be some problem main manifestations to be: city's electrical stability is inadequate, the stability that affects the illumination of LED lamp, causes LED lamp to occur flicker effects illuminating effect and useful life.
Utility model content
The problem existing for prior art, the purpose of this utility model is to provide a kind of LED lamp drive circuit, connect the settings of external power grid and LED lamp, it is mainly processed in order to the alternating current of external power grid is carried out to rectification and filtering, and adopts closed loop feedback link to control the electric current of output and voltage, thereby, electric current and the voltage stabilization of its output output are reliable, and then, can make LED lamp be able to steady operation, guarantee illuminating effect and useful life.
A kind of LED lamp drive circuit that the utility model provides, it comprises the input connecting successively, rectification module, filtration module, current limliting module and output, further comprise feedback module, described feedback module connects described output and described filtration module setting, described input connects external power grid, described output connects LED lamp, wherein, described rectification module is by the first diode, the second diode, the 3rd diode and the 4th diode form, described rectification module consists of the first electric capacity, described feedback module comprises light-emitting diode, photosensitive switch and LED drive control chip, described light-emitting diode and described output form loop, described photosensitive switch is together with described LED package, described photosensitive switch drives control chip to be connected with described LED, in order to open described LED, drive control chip, described LED drives control chip in order to stablize output voltage and the electric current of described output, and described LED drives control chip to provide power supply by wire-wound transformer, described wire-wound transformer is connected with described output.
Based on disclosing of above technical scheme, the utility model possesses following beneficial effect:
A kind of LED lamp drive circuit that the utility model provides, it comprises the input connecting successively, rectification module, filtration module, current limliting module and output, further comprise feedback module, described feedback module connects described output and described filtration module setting, described input connects external power grid, described output connects LED lamp, wherein, described rectification module is by the first diode, the second diode, the 3rd diode and the 4th diode form, described rectification module consists of the first electric capacity, described feedback module comprises light-emitting diode, photosensitive switch and LED drive control chip, described light-emitting diode and described output form loop, described photosensitive switch is together with described LED package, described photosensitive switch drives control chip to be connected with described LED, in order to open described LED, drive control chip, described LED drives control chip in order to stablize output voltage and the electric current of described output, and described LED drives control chip to provide power supply by wire-wound transformer, described wire-wound transformer is connected with described output, described LED lamp drive circuit is mainly processed in order to the alternating current of external power grid is carried out to rectification and filtering, and adopt closed loop feedback link to control the electric current of output and voltage, thereby, electric current and the voltage stabilization of its output output are reliable, and then, can make LED lamp be able to steady operation, guarantee illuminating effect and useful life.
Accompanying drawing explanation
The structured flowchart of a kind of LED lamp drive circuit that Fig. 1 provides for the utility model;
The circuit diagram of a kind of LED lamp drive circuit that Fig. 2 provides for the utility model.
Drawing reference numeral explanation
Photosensitive switch 1
LED drives control chip 2
Wire-wound transformer 3
Embodiment
Below in conjunction with accompanying drawing and by embodiment, further illustrate the technical solution of the utility model:
The problem existing for prior art, the purpose of this utility model is to provide a kind of LED lamp drive circuit, connect the settings of external power grid and LED lamp, it is mainly processed in order to the alternating current of external power grid is carried out to rectification and filtering, and adopts closed loop feedback link to control the electric current of output and voltage, thereby, electric current and the voltage stabilization of its output output are reliable, and then, can make LED lamp be able to steady operation, guarantee illuminating effect and useful life.
Refer to Fig. 1 and Fig. 2, a kind of LED lamp drive circuit that the utility model provides, it comprises the input (not label) connecting successively, rectification module 100, filtration module 200, current limliting module 300 and output (not label), further comprise feedback module 400, described feedback module 400 connects described output and described filtration module 200 arranges, described input connects external power grid, described output connects LED lamp, wherein, described rectification module 100 is by the first diode D1, the second diode D2, the 3rd diode D3 and the 4th diode D4 form, described rectification module 100 consists of the first capacitor C 1, described feedback module 400 comprises light-emitting diode Dz, photosensitive switch 1 and LED drive control chip 2, described light-emitting diode Dz and described output form loop, and in this loop, be provided with current-limiting resistance (not label), described photosensitive switch 1 is packaged together with described light-emitting diode Dz, described photosensitive switch 1 drives control chip 2 to be connected with described LED, in order to open described LED, drive control chip 2, described LED drives control chip 2 in order to stablize output voltage and the electric current of described output, and described LED drives control chip 2 to provide power supply by wire-wound transformer 3, described wire-wound transformer 3 is connected with described output, described current limliting module 300 comprises the first resistance R 1 and the second resistance R 2, when the voltage of described output or electric current are when unstable, the photo-labile that described light-emitting diode Dz sends, and then, trigger described photosensitive switch 1 work, to open described LED, drive control chip 2 work, described LED drives control chip 2 to described output afford redress voltage or offset current, to stablize the voltage and current of described output.
Based on disclosing of above technical scheme, the utility model possesses following beneficial effect:
A kind of LED lamp drive circuit that the utility model provides, it comprises the input connecting successively, rectification module 100, filtration module 200, current limliting module 300 and output, further comprise feedback module 400, described feedback module 400 connects described output and described filtration module 200 arranges, described input connects external power grid, described output connects LED lamp, wherein, described rectification module 100 is by the first diode D1, the second diode D2, the 3rd diode D3 and the 4th diode D4 form, described rectification module 100 consists of the first electric capacity, described feedback module 400 comprises light-emitting diode Dz, photosensitive switch 1 and LED drive control chip 2, described light-emitting diode Dz and described output form loop, described photosensitive switch 1 is packaged together with described light-emitting diode Dz, described photosensitive switch 1 drives control chip 2 to be connected with described LED, in order to open described LED, drive control chip 2, described LED drives control chip 2 in order to stablize output voltage and the electric current of described output, and described LED drives control chip 2 to provide power supply by wire-wound transformer 3, described wire-wound transformer 3 is connected with described output, described LED lamp drive circuit is mainly processed in order to the alternating current of external power grid is carried out to rectification and filtering, and adopt closed loop feedback link to control the electric current of output and voltage, thereby, electric current and the voltage stabilization of its output output are reliable, and then, can make LED lamp be able to steady operation, guarantee illuminating effect and useful life.
By reference to the accompanying drawings the utility model has been carried out to exemplary description above; obvious realization of the present utility model is not subject to the restrictions described above; as long as the various improvement that adopted method design of the present utility model and technical scheme to carry out; or without improving, design of the present utility model and technical scheme are directly applied to other occasion, all in protection range of the present utility model.
Claims (1)
1. a LED lamp drive circuit, it is characterized in that, it comprises the input connecting successively, rectification module, filtration module, current limliting module and output, further comprise feedback module, described feedback module connects described output and described filtration module setting, described input connects external power grid, described output connects LED lamp, wherein, described rectification module is by the first diode, the second diode, the 3rd diode and the 4th diode form, described rectification module consists of the first electric capacity, described feedback module comprises light-emitting diode, photosensitive switch and LED drive control chip, described light-emitting diode and described output form loop, described photosensitive switch is together with described LED package, described photosensitive switch drives control chip to be connected with described LED, in order to open described LED, drive control chip, described LED drives control chip in order to stablize output voltage and the electric current of described output, and described LED drives control chip to provide power supply by wire-wound transformer, described wire-wound transformer is connected with described output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320416053.2U CN203435183U (en) | 2013-07-12 | 2013-07-12 | LED lamp drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320416053.2U CN203435183U (en) | 2013-07-12 | 2013-07-12 | LED lamp drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203435183U true CN203435183U (en) | 2014-02-12 |
Family
ID=50064192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320416053.2U Expired - Fee Related CN203435183U (en) | 2013-07-12 | 2013-07-12 | LED lamp drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203435183U (en) |
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2013
- 2013-07-12 CN CN201320416053.2U patent/CN203435183U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| C56 | Change in the name or address of the patentee | ||
| CB03 | Change of inventor or designer information |
Inventor after: Feng Jinsong Inventor before: Tu Ju |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: TU JU TO: FENG JINSONG |
|
| CP02 | Change in the address of a patent holder |
Address after: 410000 Hunan province Changsha Kaifu District Youth Road Jiahai Industrial Park building A2 Room 501 Patentee after: HUNAN KEYI PHOTOELECTRIC TECHNOLOGY CO., LTD. Address before: 414400 1 groups of Xinli village, new town, Yueyang, Hunan, Miluo Patentee before: HUNAN KEYI PHOTOELECTRIC TECHNOLOGY CO., LTD. |
|
| 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: 20140212 Termination date: 20160712 |