CN2857404Y - A.C. 220V LED constant current driving circuit - Google Patents
A.C. 220V LED constant current driving circuit Download PDFInfo
- Publication number
- CN2857404Y CN2857404Y CNU200520036576XU CN200520036576U CN2857404Y CN 2857404 Y CN2857404 Y CN 2857404Y CN U200520036576X U CNU200520036576X U CN U200520036576XU CN 200520036576 U CN200520036576 U CN 200520036576U CN 2857404 Y CN2857404 Y CN 2857404Y
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- China
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- circuit
- led
- led array
- series
- current
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model provides an AC 220V LED array drive circuit and is the application of electronic techniques in the filed of illumination. The AC input terminal of the rectifier circuit is connected in series with a step-down constant-current circuit composed by capacitances and the DC output terminal of the rectifier circuit is connected in parallel with a protection and wave filtering circuit composed by capacitances and LED array. The LED array is formed by a plurality of LEDs connected in series. The LED array is formed by a plurality of LEDs connected in series followed by in parallel. The LED array is formed by a plurality of LEDs connected in parallel followed by in series. The circuit in the utility model is characterized in simple structure, high credibility, low cost, small volume, simple manufacturing and high electricity-saving efficiency. After the adoption of the constant-current and wave filtering technique, the LED light strength is the most stable without flicker and has long service life. Since the whole circuit is of capacitance type, it is beneficial for improving the power factor of the AC electricity network, which produces no pollution to the AC electricity network and is beneficial for absorbing the pollution in the AC electricity network. Therefore, the product in the utility model is an environmental protection electric appliance.
Description
Technical field
The utility model relates to a kind of circuit, particularly a kind of daily life lighting lamp circuit.
Background technology
LED illumination driving circuit commonly used is made up of voltage transformation, rectification, voltage stabilizing, filter circuit.The employing switch power technology that has.Also useful inductance step-down, their weak point is that volume is big, the cost height, what have also pollutes power supply.Also have a kind of resistance capacitance decompression current limliting of using,, increased the loss power of circuit owing to used resistance.When being used as night-light, when only meeting one, two LED, the loss power of circuit is compared just bigger with LED.
The utility model content
In order to overcome above-mentioned deficiency, the utility model provides a kind of led array constant-current drive circuit of alternating current 220V.It is made up of step-down constant-current circuit, rectification circuit, protection, filter circuit.It is characterized in that
The ac input end of described rectification circuit is in series with the step-down constant-current circuit that is made of electric capacity; The dc output end of described rectification circuit is parallel with transient protection, filter circuit and the led array that is made of electric capacity.
Described rectification circuit is made up of the rectifier bridge that diode constitutes.
Described led array is connected in series by one to many LED and forms.
Described led array is formed in parallel after being connected by one to many LED again.
Described led array is in series after by one to many LED parallel connections again.
Compared with prior art, the beneficial effects of the utility model are: (one), circuit are the simplest, and reliability is the highest, and cost is minimum, and the volume minimum is made the simplyst, and power saving is most effective.(2), owing to adopted constant current, filtering technique, the LED light intensity is the most stable, flicker free sense, LED long service life.(3), since entire circuit be capacitive, help improving the power factor (PF) of AC network, pollution-free to AC network.Helping absorbing the pollution of AC network, is environment apparatus.
Description of drawings
Fig. 1 is the utility model alternating current 220V LED constant-current drive circuit schematic diagram.
Fig. 2 is first embodiment of the present utility model.
Fig. 3 is second embodiment of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is elaborated.
First embodiment of the present utility model.
As shown in Figure 2; the step-down constant-current circuit adopts high-voltage capacitance C1; alternating current 220V become low pressure constant current output (when the AC impedance of electric capacity＞＞during the resistance of LED lamp); after the rectification circuit rectification that rectifier bridge D1, D2, D3, D4 constitute, obtain direct current; after transient protection, filter capacitor C2 filtering, obtain direct current more stably again, give the power supply of high-brightness LED array.When disturbing, the voltage at capacitor C 2 two ends can not suddenly change, and has protected the operate as normal of led array.
Owing to adopted constant current technology, the group number of LED series connection is the amount doesn't matter, minimumly meets a LED.
Second embodiment of the present utility model: night-light.
As shown in Figure 3; the step-down constant-current circuit adopts high-voltage capacitance C1; alternating current 220V is become low pressure constant current output; after the rectification circuit rectification that rectifier bridge D1, D2, D3, D4 constitute, obtain direct current; after transient protection, filter capacitor C2 filtering, obtain direct current more stably again, give high-brightness LED 1, LED2 power supply.
Claims (5)
1, a kind of LED constant-current drive circuit of alternating current 220V comprises rectification circuit, it is characterized in that, the ac input end of described rectification circuit is in series with the step-down constant-current circuit that is made of electric capacity; The dc output end of described rectification circuit is parallel with transient protection, filter circuit and the led array that is made of electric capacity.
2, the LED constant-current drive circuit of a kind of alternating current 220V according to claim 1 is characterized in that, described rectification circuit is made up of the rectifier bridge that diode constitutes.
3, the LED constant-current drive circuit of a kind of alternating current 220V according to claim 1 is characterized in that, described led array is connected in series by one to many LED and forms.
4, the LED constant-current drive circuit of a kind of alternating current 220V according to claim 1 is characterized in that, described led array is formed in parallel after being connected by one to many LED again.
5, the LED constant-current drive circuit of a kind of alternating current 220V according to claim 1 is characterized in that, described led array is in series after by one to many LED parallel connections again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200520036576XU CN2857404Y (en) | 2005-12-20 | 2005-12-20 | A.C. 220V LED constant current driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200520036576XU CN2857404Y (en) | 2005-12-20 | 2005-12-20 | A.C. 220V LED constant current driving circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2857404Y true CN2857404Y (en) | 2007-01-10 |
Family
ID=37600709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200520036576XU Expired - Fee Related CN2857404Y (en) | 2005-12-20 | 2005-12-20 | A.C. 220V LED constant current driving circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2857404Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102573244A (en) * | 2012-02-28 | 2012-07-11 | 福建农林大学 | High-power factor low-aberration rate high-power light-emitting diode (LED) driving circuit |
| WO2012139403A1 (en) * | 2011-04-12 | 2012-10-18 | 青岛海信信芯科技有限公司 | Led backlight source drive circuit, led backlight source and liquid crystal display device |
| CN103096566A (en) * | 2011-11-07 | 2013-05-08 | 深圳市长运通光电技术有限公司 | Light-emitting diode (LED) lamp and drive circuit thereof |
| CN104168683A (en) * | 2013-05-20 | 2014-11-26 | 深圳市海洋王照明工程有限公司 | LED drive circuit |
| CN110418571A (en) * | 2017-03-16 | 2019-11-05 | Mt艾迪巴株式会社 | Plant culture light generating apparatus, with the plant culture equipment and plant cultivation method using it |
-
2005
- 2005-12-20 CN CNU200520036576XU patent/CN2857404Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012139403A1 (en) * | 2011-04-12 | 2012-10-18 | 青岛海信信芯科技有限公司 | Led backlight source drive circuit, led backlight source and liquid crystal display device |
| US9182629B2 (en) | 2011-04-12 | 2015-11-10 | Hisense Hiview Tech Co., Ltd. | LED backlight source drive circuit, LED backlight source and liquid crystal display device |
| CN103096566A (en) * | 2011-11-07 | 2013-05-08 | 深圳市长运通光电技术有限公司 | Light-emitting diode (LED) lamp and drive circuit thereof |
| CN102573244A (en) * | 2012-02-28 | 2012-07-11 | 福建农林大学 | High-power factor low-aberration rate high-power light-emitting diode (LED) driving circuit |
| CN104168683A (en) * | 2013-05-20 | 2014-11-26 | 深圳市海洋王照明工程有限公司 | LED drive circuit |
| CN110418571A (en) * | 2017-03-16 | 2019-11-05 | Mt艾迪巴株式会社 | Plant culture light generating apparatus, with the plant culture equipment and plant cultivation method using it |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070110 Termination date: 20101220 |