CN106856640A - A kind of LED drive power - Google Patents
A kind of LED drive power Download PDFInfo
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- CN106856640A CN106856640A CN201510907148.8A CN201510907148A CN106856640A CN 106856640 A CN106856640 A CN 106856640A CN 201510907148 A CN201510907148 A CN 201510907148A CN 106856640 A CN106856640 A CN 106856640A
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- electric capacity
- diode
- rectifier bridge
- led
- drive power
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Abstract
The invention discloses a kind of LED drive power, including exchange input, rectifier bridge, LED load, the exchange input is connected with rectifier bridge, it is connected with the output end of rectifier bridge after having electric capacity C1 series diodes VD1, it is connected with the output end of rectifier bridge after having diode VD3 series capacitances C2, there is diode VD2 to be connected with electric capacity C1 negative electrodes and electric capacity C2 anodes, the LED load is connected with electric capacity C1 anodes and electric capacity C2 negative electrodes.LED drive power of the present invention, exchange input carries out PFC by after rectifier bridge rectification, passive power factor circuit being constituted using two electric capacity and three diodes to the electric energy after rectification, the characteristics of drive circuit has simple structure, low cost, PFC effect is obvious.
Description
Technical field
The present invention relates to field of LED drive technology, more particularly to a kind of LED drive power.
Background technology
LED has been referred to as forth generation lighting source or green light source.No matter in structure or luminous LED is
It is all completely different with traditional lamp bulb in principle.Its Bian electroluminescence, therefore less energy consumption, hot spoke
Penetrate low, luminous efficiency high.The single tube power of LED is 0.03-0.06W, in the situation of same illuminating effect
Under, power consumption is a ten thousandth of incandescent lamp bulb, is burn light lamp 1/2nd.The 40W of effect same
LED bulb of the fluorescent lamp equivalent to 8W, and LED can be with turn colors.Due to LED bulb volume
It is small, it is lightweight, encapsulating material can bear high-strength mechanical impact and shake, so it does not allow it is broken.
And the lamp life of LED can typically reach 5-10, the replacement cost of light fixture is greatly reduced.
Compared with conventional bulb, it photochromic soft, not string mesh, without the insalubrious thing such as parent, sodium
Matter, it is safe.With the gradually maturation of White light LED technology, semiconductor illumination technique can not only be answered
For white light general illumination, while being also widely used at other many aspects, such as various instruments
The illumination of all kinds of vehicles such as instruction light source, decorative lighting, the automobile of instrument, traffic signals show,
Background shows, electronic curtain, military illumination and tourism, light industrial products etc..But, the drive of LED
Dynamic circuit structure and control are more complicated, and drive circuit includes integrated chip so that drive circuit
It is relatively costly.
The content of the invention
The purpose of the present invention is complicated, relatively costly in order to solve the problems, such as above-mentioned LED drive circuit control,
There is provided a kind of LED drive power, exchange input by after rectifier bridge rectification, using two electric capacity and
Three diodes constitute passive power factor circuit, and PFC is carried out to the electric energy after rectification,
The characteristics of drive circuit has simple structure, low cost, PFC effect is obvious.
The required technical problem for solving of the invention can be achieved through the following technical solutions：
A kind of LED drive power, including exchange input, rectifier bridge, LED load, the exchange are defeated
Enter and be connected with rectifier bridge, be connected with the output end of rectifier bridge after having electric capacity C1 series diodes VD1, have
It is connected with the output end of rectifier bridge after diode VD3 series capacitances C2, there is diode VD2 and electric capacity
C1 negative electrodes are connected with electric capacity C2 anodes, the LED load and electric capacity C1 anodes and electric capacity C2 negative electrodes
It is connected.
Further, the negative electrode of the electric capacity C1 is connected with the negative electrode of diode VD1.
Further, the anode of the diode VD3 is connected with the anode of electric capacity C2.
Further, the anode of the diode VD2 is connected with electric capacity C1 negative electrodes, diode VD2
Negative electrode be connected with electric capacity C2 anodes.
Further, the LED load has one or more.
Further, the multiple LED load is connected in series.
Beneficial effects of the present invention：A kind of LED drive power, exchange input by after rectifier bridge rectification,
Passive power factor circuit is constituted using two electric capacity and three diodes, the electric energy after rectification is carried out
PFC, the characteristics of the drive circuit has simple structure, low cost, PFC
Effect is obvious.
Brief description of the drawings
Fig. 1 is circuit diagram of the present invention.
Specific embodiment
In order that technological means, creation characteristic, reached purpose and effect that the present invention is realized are readily apparent from
Understand, with reference to being specifically illustrating, the present invention is expanded on further.
During specific implementation, with reference to Fig. 1, a kind of LED drive power, including exchange input, rectifier bridge,
Circuit of power factor correction, LED load.Exchange input, rectifier bridge, circuit of power factor correction,
LED load is sequentially connected.Exchange input is 220V alternating currents, and rectifier bridge is 4 diode D1-D4
The full bridge rectifier of composition.Circuit of power factor correction includes electric capacity C1, electric capacity C2, diode
VD1, diode VD2, diode VD3.Output after electric capacity C1 series diodes VD1 with rectifier bridge
End is connected, and the negative electrode of the electric capacity C1 is connected with the negative electrode of diode VD1；Diode VD3 series electricals
It is connected with the output end of rectifier bridge after holding C2, the anode of diode VD3 is connected with the anode of electric capacity C2；
Diode VD2 is connected with electric capacity C1 negative electrodes and electric capacity C2 anodes, the anode and electric capacity of diode VD2
C1 negative electrodes are connected, and the negative electrode of diode VD2 is connected with electric capacity C2 anodes.LED load and electric capacity C1
Anode is connected with electric capacity C2 negative electrodes.LED load can have one or more, i.e. DL1-DLn.It is multiple
LED load is connected in series.
Circuit of power factor correction is made up of two electric capacity and three diodes, circuit of power factor correction
It is used for increasing considerably the angle of flow of commutation diode after rectifier bridge so that input circuit is from spike arteries and veins
Punching is changed into the waveform close to sine wave, so as to follow the input voltage waveform of alternating current, can be by power
Factor brings up to 0.9.
When input voltage is higher, due to the access of VD2, voltage is simply entered higher than electricity on C1 and C2
Pressure sum, electric capacity C1 and C2 are electrically charged in series；When voltage is not all additional on C1 or C2
Voltage is high, so the two electric capacity can not be discharged, and the diode VD1 and VD3 that C1, C2 connect
It is reverse biased；When the half for dropping to crest voltage of input voltage, the positive guides of VD1 and VD3
Logical, C1 and C2 starts electric discharge and provides energy to load；When input voltage is less than the voltage on C1 and C2,
Rectifier bridge is in cut-off state.After input voltage is from just half week to negative half period, input voltage is higher than C1
During with voltage on C2, rectifier can just recover conducting, and input voltage charges to C1 and C2 again,
And so on.
A kind of LED drive power, exchange is input into by after rectifier bridge rectification, using two electric capacity and three
Individual diode constitutes passive power factor circuit, and PFC is carried out to the electric energy after rectification, should
The characteristics of drive circuit has simple structure, low cost, PFC effect is obvious.
General principle of the invention, principal character and advantages of the present invention has been shown and described above.This
The technical staff of industry it should be appreciated that the present invention is not limited to the above embodiments, above-described embodiment and
Merely illustrating the principles of the invention described in specification, before spirit and scope of the invention is not departed from
Put that various changes and modifications of the present invention are possible, these changes and improvements both fall within claimed sheet
In invention scope.The claimed scope of the invention is defined by appending claims and its equivalent.
Claims (6)
1. a kind of input of LED drive power, including exchange, rectifier bridge, LED load, institute
Exchange input is stated to be connected with rectifier bridge, it is characterised in that：There is electric capacity C1 series diodes VD1
Be connected with the output end of rectifier bridge afterwards, have after diode VD3 series capacitances C2 with rectifier bridge
Output end is connected, and has diode VD2 to be connected with electric capacity C1 negative electrodes and electric capacity C2 anodes, described
LED load is connected with electric capacity C1 anodes and electric capacity C2 negative electrodes.
2. according to a kind of LED drive power described in claim 1, it is characterised in that：Institute
The negative electrode for stating electric capacity C1 is connected with the negative electrode of diode VD1.
3. according to a kind of LED drive power described in claim 1, it is characterised in that：Institute
The anode for stating diode VD3 is connected with the anode of electric capacity C2.
4. according to a kind of LED drive power described in claim 1, it is characterised in that：Institute
The anode for stating diode VD2 is connected with electric capacity C1 negative electrodes, the negative electrode and electric capacity of diode VD2
C2 anodes are connected.
5. according to a kind of LED drive power described in claim 1, it is characterised in that：Institute
Stating LED load has one or more.
6. according to a kind of LED drive power described in claim 5, it is characterised in that：Institute
Multiple LED loads are stated to be connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510907148.8A CN106856640A (en) | 2015-12-08 | 2015-12-08 | A kind of LED drive power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510907148.8A CN106856640A (en) | 2015-12-08 | 2015-12-08 | A kind of LED drive power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106856640A true CN106856640A (en) | 2017-06-16 |
Family
ID=59132577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510907148.8A Pending CN106856640A (en) | 2015-12-08 | 2015-12-08 | A kind of LED drive power |
Country Status (1)
| Country | Link |
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| CN (1) | CN106856640A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201315691Y (en) * | 2009-04-18 | 2009-09-23 | 深圳市丰泰晶电子科技有限公司 | Power control circuit of high-power LED lamp |
| CN201515524U (en) * | 2009-07-22 | 2010-06-23 | 肇庆市端州区晶裕光电照明电器厂 | LED fluorescent lamp driving power |
| CN201742622U (en) * | 2010-08-12 | 2011-02-09 | 无锡科尔华电子有限公司 | Constant-current control power supply for LED (light-emitting diode) street lamp |
| CN201795360U (en) * | 2010-08-26 | 2011-04-13 | 常熟市保得利计算机科技有限公司 | LED fluorescent lamp |
| CN202602995U (en) * | 2012-04-28 | 2012-12-12 | 淄博职业学院 | LED daylight lamp driving power supply |
| CN203167368U (en) * | 2013-03-29 | 2013-08-28 | 惠州学院 | LED driving power supply with passive power factor correction |
| CN204157140U (en) * | 2014-11-07 | 2015-02-11 | 四川嘉汇电子科技有限公司 | Based on the constant current LED power supplies of power factor compensation |
| CN205320350U (en) * | 2015-12-08 | 2016-06-15 | 池州学院 | LED (Light emitting diode) driving power |
-
2015
- 2015-12-08 CN CN201510907148.8A patent/CN106856640A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201315691Y (en) * | 2009-04-18 | 2009-09-23 | 深圳市丰泰晶电子科技有限公司 | Power control circuit of high-power LED lamp |
| CN201515524U (en) * | 2009-07-22 | 2010-06-23 | 肇庆市端州区晶裕光电照明电器厂 | LED fluorescent lamp driving power |
| CN201742622U (en) * | 2010-08-12 | 2011-02-09 | 无锡科尔华电子有限公司 | Constant-current control power supply for LED (light-emitting diode) street lamp |
| CN201795360U (en) * | 2010-08-26 | 2011-04-13 | 常熟市保得利计算机科技有限公司 | LED fluorescent lamp |
| CN202602995U (en) * | 2012-04-28 | 2012-12-12 | 淄博职业学院 | LED daylight lamp driving power supply |
| CN203167368U (en) * | 2013-03-29 | 2013-08-28 | 惠州学院 | LED driving power supply with passive power factor correction |
| CN204157140U (en) * | 2014-11-07 | 2015-02-11 | 四川嘉汇电子科技有限公司 | Based on the constant current LED power supplies of power factor compensation |
| CN205320350U (en) * | 2015-12-08 | 2016-06-15 | 池州学院 | LED (Light emitting diode) driving power |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170616 |
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| WD01 | Invention patent application deemed withdrawn after publication |