CN202059614U - Miniwatt power supply for LED lightening - Google Patents
Miniwatt power supply for LED lightening Download PDFInfo
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- CN202059614U CN202059614U CN2010206999204U CN201020699920U CN202059614U CN 202059614 U CN202059614 U CN 202059614U CN 2010206999204 U CN2010206999204 U CN 2010206999204U CN 201020699920 U CN201020699920 U CN 201020699920U CN 202059614 U CN202059614 U CN 202059614U
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- 238000001914 filtration Methods 0.000 claims abstract description 11
- 238000004804 winding Methods 0.000 claims description 19
- 230000003139 buffering effect Effects 0.000 claims description 16
- 239000003990 capacitor Substances 0.000 claims description 6
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000002277 temperature effect Effects 0.000 abstract description 2
- 230000005670 electromagnetic radiation Effects 0.000 abstract 1
- 238000005286 illumination Methods 0.000 description 12
- 238000005070 sampling Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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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
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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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
本实用新型是一种LED照明用小功率电源，它包括整流滤波、缓冲驱动电路、输出整流和LED负载组成，其结构简单独特体积小巧适合于安装在球泡灯头内，在次级外叠加一组作为输出反馈，再将反馈信号采用电阻进行电压电流采用，送入受控的反馈端，控制电路根据输出电流电压的变化在初级进行调整，进而达到恒压恒流输出以满足LED驱动要求，以实现要求结构简单体积小又能恒流的LED球泡灯的照明。与现有技术相比，最大的特点是以全电压(85V～260V)恒流为LED提供照明用电源。结构简单独特、体积小、成本低廉、光电效率高，可以LED实现主体照明，在同等亮度的前提下，比紧凑型荧光灯节电约10％。温度低、寿命长(达10万小时)及无电磁辐射等优点，可降低室温效应，利于环保，是真正节能环保的绿色照明。
The utility model is a low-power power supply for LED lighting, which consists of rectification and filtering, buffer drive circuit, output rectification and LED load. The group is used as output feedback, and then the feedback signal is used for voltage and current by resistors, and sent to the controlled feedback terminal. The control circuit adjusts the primary stage according to the change of output current and voltage, and then achieves constant voltage and constant current output to meet LED drive requirements. In order to realize the lighting of the LED bulb lamp that requires a simple structure, small size and constant current. Compared with the prior art, the biggest feature is that the full voltage (85V-260V) constant current provides lighting power for the LED. The structure is simple and unique, the volume is small, the cost is low, and the photoelectric efficiency is high. LEDs can be used to realize the main body lighting. Under the premise of the same brightness, the power saving is about 10% compared with the compact fluorescent lamp. The advantages of low temperature, long life (up to 100,000 hours) and no electromagnetic radiation can reduce the room temperature effect, which is beneficial to environmental protection. It is a truly energy-saving and environmentally friendly green lighting.
Description
One, technical field
The utility model relates to a kind of LED illumination small-power power, and (constant-current driving LED that uses of the scope of 85V～260V) throws light on and uses small-power power especially a kind of simple in structure, with low cost, full voltage.
Two, background technology
At present, LED (light-emitting diode) is so that its volume is little, in light weight, energy consumption is low, long (reaching 100,000 hours), photoelectric efficiency height of safe and reliable, life-span, help advantage such as environmental protection in the extensive use of a plurality of fields, as is applied to the lamp of demonstration usefulness of stop lamp, Landscape Lamp, decorative lamp, background light, indicator light, alarm lamp, traffic lights and the display screen etc. of automobile.The power supply that existing LED uses all be usually low pressure (constant voltage of 3V～36V), the basic structure form has following two kinds: a kind of is the voltage stabilizing circuit that is provided with transforming circuit and joins with it, can the unnecessary energy of elimination in the process of transformation voltage stabilizing, cause energy waste; Another kind is a high frequency switch power, can produce multiple harmonic and electrical network is polluted.No matter be the LED power supply of which kind of form, all exist complex structure, shortcoming such as volume is big, cost is high and load is low, to such an extent as to existing LED can't be applied to the illumination such as places such as family, market, hotel, office buildings, causing lighting energy consumption is about 5% of total power consumption.
Three, summary of the invention
The purpose of this utility model is can't be in the technical problem of lighting field widespread usage in order to solve LED that prior art exists, provide a kind of simple in structure, volume is little, with low cost, full voltage (the constant-current driving LED illumination small-power power that the scope of 85V～260V) is used.
The purpose of this utility model is achieved like this: it comprises rectifying and wave-filtering, buffering drive circuit, output rectification and LED load are formed, rectifying and wave-filtering (BD1, L1, C1) output termination transformer ground floor winding is drawn 6 pin and buffering drive circuit (C2, R2) and starting resistance (R1), transformer ground floor winding is drawn 5 pin and is connect the positive pole of buffering drive circuit diode (D1) and the collector electrode of power drive pipe (Q1), the negative pole of buffering drive circuit diode (D1) meets drive circuit (C2, R2) the other end, transformer second layer winding is drawn the positive pole that 4 pin connect output rectifier diode (D4), the negative pole of output rectifier diode (D4) connects the positive pole of output filter capacitor (C5) and the positive pole of LED load, transformer second layer winding is drawn 1 pin and is connect the negative pole of output filter capacitor (C5) and the negative pole of LED load, the 3rd layer of winding of transformer drawn the upper end of 7 pin connecting resistances (R7) and the positive pole of diode (D3), the lower end of resistance (R7) links to each other with the upper end of resistance (R8) and inserts 1 pin of driving governor chip (U1), the 3rd layer of winding of transformer drawn 2 of the lower end of 8 pin connecting resistances (R8) and driving governor chip (U1), 3 pin, driving governor chip (U1) is adjusted the level of 4 pin according to the variation of 1 pin, 4 pin of driving governor chip (U1) connect the emitter of power drive pipe (Q1), the negative pole of diode (D3) is by a current-limiting resistance (R4) and resistance (R1, R3, R5), the negative pole of electric capacity (C3) and diode (D2) links to each other, 5 pin of another termination driving governor chip (U1) of resistance (R5) are that driving governor chip (U1) provides power supply, 2 of another termination driving governor chip (U1) of electric capacity (C3), 3 pin are driving governor chip (U1) power filter, another termination rectification output end of resistance (R1) is that driving governor PT4201 (U1) provides starting current, and the base stage that the positive pole of resistance (R3) other end and diode (D2) connects power drive pipe (Q1) is that power drive pipe (Q1) provides drive current.
The utility model is compared with prior art, and maximum characteristics are that (85V～260V) constant current is that LED provides the electric consumption on lighting source with full voltage.Simple in structure, volume is little, with low cost, photoelectric efficiency is high, can the LED realization body illumination, under the prerequisite of equal brightness, economize on electricity about 10% than compact fluorescent lamp.Simultaneously the utility model have also that volume is little, with low cost, photoelectric efficiency is high, temperature is low, advantages such as life-span long (reaching 100,000 hours) and electromagnetic-radiation-free, can reduce room temperature effect, be beneficial to environmental protection, be the green illumination of real energy-conserving and environment-protective.
Four, description of drawings
Accompanying drawing 1 is the utility model LED illumination small-power power schematic diagram.
Accompanying drawing 2 is the utility model LED illumination small-power power theory diagrams.
Five, embodiment
Below in conjunction with description of drawings embodiment of the present utility model.
With reference to accompanying drawing, the utility model LED illumination small-power power, input links to each other with output, and output links to each other with feedback, and feedback links to each other with control, and control links to each other with power switch, and power switch drives with elementary buffering and links to each other.
The utility model LED illumination small-power power, it comprises: rectifying and wave-filtering, buffering drive circuit, output rectification and LED load are formed, rectifying and wave-filtering (BD1 L1 C1) output termination transformer ground floor winding is drawn 6 pin and buffering drive circuit (C2 R2) and starting resistance (R1), transformer ground floor winding is drawn 5 pin and is connect the positive pole of buffering drive circuit diode (D1) and the collector electrode of power drive pipe (Q1), and the negative pole of buffering drive circuit diode (D1) connects the other end of drive circuit (C2 R2) to realize elementary driving; Transformer second layer winding is drawn the positive pole that 4 pin connect output rectifier diode (D4), the negative pole of output rectifier diode (D4) connects the positive pole of output filter capacitor (C5) and the positive pole of load LED, transformer second layer winding is drawn 1 pin and is connect the negative pole of output filter capacitor (C5) and the negative pole of load LED, drives to realize output; The 3rd layer of winding of transformer drawn the upper end of 7 pin connecting resistances (R7) and the positive pole of diode (D3), the lower end of resistance (R7) links to each other with the upper end of resistance (R8) and inserts 1 pin of driving governor chip (U1), the 3rd layer of winding of transformer drawn the lower end of 8 pin connecting resistances (R8) and 2,3 pin (U1), to realize following the tracks of the variation of output voltage electric current, in time feed back; The level of 4 pin is adjusted in the variation of driving governor chip (U1) foundation 1 pin, and 4 pin of driving governor chip (U1) connect the emitter of power drive pipe (Q1), power controlling driving tube (Q1) Guan Yukai; The negative pole of diode (D3) links to each other with (R1 R3 R5 C3) and the negative pole of diode (D2) by a current-limiting resistance (R4), 5 pin of another termination driving governor chip (U1) of resistance (R5) are that driving governor chip (U1) provides power supply, 2 of another termination driving governor chip (U1) of electric capacity (C3), 3 pin are driving governor chip (U1) power filter, another termination rectification output end of resistance (R1) is that driving governor PT4201 (U1) provides starting current, and the base stage that the positive pole of resistance (R3) other end and diode (D2) connects power drive pipe (Q1) is that power drive pipe (Q1) provides drive current.This winding of transformer is in order to realize output and input and feedback and output close coupling.
During use, (85V～260V) inserts input with alternating voltage, sending into elementary buffering behind rectifying and wave-filtering drives, offer load LED realization illumination to exporting rectifying and wave-filtering again, the situation of change of the sampling resistor sampling output loading of feedback end, load information is delivered to control, control receives that feedback information adjusts the Push And Release frequency and the time of the power tube of switch element, thereby control the purpose that elementary buffering drove and then reached the adjustment output loading, output voltage is decided by the ratio of sampling resistor, and output current is decided by the value of sampling resistor.
(FR1) antisurge protection, (BD1, L1; C1) input rectifying filtering, (R2, C2; D1) elementary buffering, (D4, C5) the output rectifying and wave-filtering offers load LED and realizes illumination; resistance (R7; R8) situation of change of sampling output loading is delivered to control with load information, (D2; R3, Q1) power drive switch element.
Claims (1)
1. a LED throws light on and uses small-power power, it comprises: rectifying and wave-filtering, buffering drive circuit, output rectification and LED load are formed, it is characterized in that: rectifying and wave-filtering (BD1, L1, C1) output termination transformer ground floor winding is drawn 6 pin and buffering drive circuit (C2, R2) and starting resistance (R1), transformer ground floor winding is drawn 5 pin and is connect the positive pole of buffering drive circuit diode (D1) and the collector electrode of power drive pipe (Q1), the negative pole of buffering drive circuit diode (D1) meets drive circuit (C2, R2) the other end, transformer second layer winding is drawn the positive pole that 4 pin connect output rectifier diode (D4), the negative pole of output rectifier diode (D4) connects the positive pole of output filter capacitor (C5) and the positive pole of LED load, transformer second layer winding is drawn 1 pin and is connect the negative pole of output filter capacitor (C5) and the negative pole of LED load, the 3rd layer of winding of transformer drawn the upper end of 7 pin connecting resistances (R7) and the positive pole of diode (D3), the lower end of resistance (R7) links to each other with the upper end of resistance (R8) and inserts 1 pin of driving governor chip (U1), the 3rd layer of winding of transformer drawn 2 of the lower end of 8 pin connecting resistances (R8) and driving governor chip (U1), 3 pin, driving governor chip (U1) is adjusted the level of 4 pin according to the variation of 1 pin, 4 pin of driving governor chip (U1) connect the emitter of power drive pipe (Q1), the negative pole of diode (D3) is by a current-limiting resistance (R4) and resistance (R1, R3, R5), the negative pole of electric capacity (C3) and diode (D2) links to each other, 5 pin of another termination driving governor chip (U1) of resistance (R5) are that driving governor chip (U1) provides power supply, 2 of another termination driving governor chip (U1) of electric capacity (C3), 3 pin are driving governor chip (U1) power filter, another termination rectification output end of resistance (R1) is that driving governor chip (U1) provides starting current, and the base stage that the positive pole of resistance (R3) other end and diode (D2) connects power drive pipe (Q1) is that power drive pipe (Q1) provides drive current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206999204U CN202059614U (en) | 2010-12-31 | 2010-12-31 | Miniwatt power supply for LED lightening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206999204U CN202059614U (en) | 2010-12-31 | 2010-12-31 | Miniwatt power supply for LED lightening |
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| Publication Number | Publication Date |
|---|---|
| CN202059614U true CN202059614U (en) | 2011-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206999204U Expired - Fee Related CN202059614U (en) | 2010-12-31 | 2010-12-31 | Miniwatt power supply for LED lightening |
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| Country | Link |
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| CN (1) | CN202059614U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104900195A (en) * | 2015-05-12 | 2015-09-09 | 来安县新元机电设备设计有限公司 | Backlight control circuit and device thereof |
| CN116347706A (en) * | 2023-04-05 | 2023-06-27 | 杭州方千科技有限公司 | Traffic signal lamp power supply and control method |
-
2010
- 2010-12-31 CN CN2010206999204U patent/CN202059614U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104900195A (en) * | 2015-05-12 | 2015-09-09 | 来安县新元机电设备设计有限公司 | Backlight control circuit and device thereof |
| CN116347706A (en) * | 2023-04-05 | 2023-06-27 | 杭州方千科技有限公司 | Traffic signal lamp power supply and control method |
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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: 20111130 Termination date: 20121231 |