CN201365359Y - Driving circuit for light emitting diode - Google Patents
Driving circuit for light emitting diode Download PDFInfo
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- CN201365359Y CN201365359Y CNU200920052193XU CN200920052193U CN201365359Y CN 201365359 Y CN201365359 Y CN 201365359Y CN U200920052193X U CNU200920052193X U CN U200920052193XU CN 200920052193 U CN200920052193 U CN 200920052193U CN 201365359 Y CN201365359 Y CN 201365359Y
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Abstract
The utility model discloses a driving circuit for a light emitting diode, and relates to the technical field of driving circuits. The driving circuit comprises an alternating current input terminal (S1), an alternating current input terminal (S2), a rectifier bridge, a chip (iW1692, resistors (R1, R2, R3, R4, R5, R6, R7, R8, R9, R10 and FR1), capacitors (C1, C2, C3, C4, C5, C6 and C7), a field effect transistor (Q1), an inductor (L1), diodes (D1, D2 and D3), a voltage stabilizing diode (Z1), a transformer (T1), a circuit positive electrode output terminal and a circuit negative electrode output terminal. Because of the adoption of the chip (iW1692), the rectifier bridge, the transformer and other components and parts, a grid can avoid voltage reduction, and harmonic currents and earth wire pulse currents can be reduced.
Description
Technical field
The utility model relates to the drive circuit technical field, relates in particular to a kind of LED driving circuit.
Background technology
Existing LED driving circuit, use simple diode rectification to add the structure of electrolysis capacitor filtering, there are the following problems for sort circuit: external power source charges to empty electrochemical capacitor by rectifier diode when 1, switching on, form the large impact electric current that is close to short circuit, situation will become serious when a large amount of this structural circuits use simultaneously, the electric network electric voltage drop that energising causes moment influence the operate as normal of miscellaneous equipment on the electrical network, even the safe operation of threat electrical network; 2, the power supply input current of sort circuit is not a sine-wave current, but concentrate on the pulse current of sinusoidal wave half cycles mid portion, so just on electrical network, produce a large amount of harmonic currents, when a large amount of this structural circuits use simultaneously electrical network is caused lasting Harmonic Interference, even threaten electric power netting safe running; 3,, be output as when high-power, even 3 phase linear loads are identical because the input current non-sinusoidal waveform; electric current can not be cancelled out each other on ground wire, causes the very big pulse current of existence on the ground wire, makes the line loss increase even burns ground wire; and make the Electric net protector action easily, cause tripping operation.
The utility model content
The utility model provides a kind of LED driving circuit, can avoid electric network electric voltage drop, reduces harmonic current and ground wire pulse current.
A kind of LED driving circuit comprises alternating current input S1, alternating current input S2, rectifier bridge, chip iW1692, resistance R 1, R2, R3, R4, R5, R6, R7, R8, R9, R10, FR1, capacitor C 1, C2, C3, C4, C5, C6, C7, field-effect transistor Q1, inductance L 1, diode D1, D2, D3, voltage stabilizing didoe Z1, transformer T1, circuit anode output, circuit cathode output end; Wherein, FR1 is connected between alternating current input S1 and rectifier bridge ac input end the 1st pin, alternating current input S2 is connected with rectifier bridge ac input end the 3rd pin, rectifier bridge cathode output end the 4th pin and C1 one end, the C2 negative pole, power supply ground connects, cathode rectifier output the 2nd pin and the C1 other end, L1 one end, R1 one end connects, the L1 other end and the R1 other end, the C2 positive pole, R2 one end, C3 one end, R4 one end, T1 input the 1st pin connects, the D1 negative pole and the C3 other end, the R4 other end connects, anodal and T1 input the 2nd pin of D1, the Q1 connection that drains, the R2 other end is connected with R3 one end, the R3 other end and iW1692 the 6th pin, C5 one end connects, Q1 source electrode and R7 one end, R6 one end, iW1692 the 5th pin connects, the R6 other end and Q1 grid, R5 one end connects, the R5 other end is connected with iW1692 the 3rd pin, iW1692 the 2nd pin and the R7 other end, C4 one end, the C5 other end, the Z1 positive pole, C6 one end, R9 one end, T1 output the 4th pin, power supply ground connects, iW1692 the 1st pin and the C4 other end, the R9 other end, R8 one end connects, iW1692 the 4th pin and Z1 negative pole, the C6 other end, the D2 negative pole connects, anodal and the R8 other end of D2, T1 output the 3rd pin connects, T1 output the 5th pin is connected with D3 is anodal, D3 negative pole and R10 one end, C7 one end, the circuit anode output connects, T1 output the 6th pin and the R10 other end, the C7 other end, the circuit cathode output end connects.
Wherein, R1 is that 4.7K, R2 are that 2.4M, R3 are that 2.4M, R4 are that 100K, R5 are that 300R, R6 are that 22K, R7 are that 2.7R, R8 are that 22K, R9 are that 3.3K, R10 are that 3.3K, FR1 are 10R.
Wherein, C1 is that 104/400V, C2 are that 3.3UF/400V, C3 are that 102/1000V, C4 are that 68P, C5 are that 470P, C6 are that 4.7UF, C7 are 22UF/16V.
Wherein, the Q1 model is IN60.
Wherein, the rectifier bridge model is MB8S.
Wherein, the D1 model is that IN4007, D2 model are that IN4148, D3 model are IN4148.
Wherein, Z1 is 1 5V voltage stabilizing didoe.
Wherein, L1 is 1.0mH.
From above technical scheme as can be seen, the utility model comprises alternating current input S1, alternating current input S2, rectifier bridge, chip iW1692, resistance R 1, R2, R3, R4, R5, R6, R7, R8, R9, R10, FR1, capacitor C 1, C2, C3, C4, C5, C6, C7, field-effect transistor Q1, inductance L 1, diode D1, D2, D3, voltage stabilizing didoe Z1, transformer T1, circuit anode output, circuit cathode output end; The technical program has adopted chip iW1692, and components and parts such as rectifier bridge and transformer can be avoided electric network electric voltage drop, reduces harmonic current and ground wire pulse current.
Description of drawings
Fig. 1 is the utility model circuit theory schematic diagram
Embodiment
Referring to Fig. 1, the utility model is described in detail below in conjunction with accompanying drawing.
LED driving circuit of the present utility model comprises alternating current input S1, alternating current input S2, rectifier bridge, chip iW1692, resistance R 1, R2, R3, R4, R5, R6, R7, R8, R9, R10, FR1, capacitor C 1, C2, C3, C4, C5, C6, C7, field-effect transistor Q1, inductance L 1, diode D1, D2, D3, voltage stabilizing didoe Z1, transformer T1, circuit anode output, circuit cathode output end; Wherein, FR1 is connected between alternating current input S1 and rectifier bridge ac input end the 1st pin, alternating current input S2 is connected with rectifier bridge ac input end the 3rd pin, rectifier bridge cathode output end the 4th pin and C1 one end, the C2 negative pole, power supply ground connects, cathode rectifier output the 2nd pin and the C1 other end, L1 one end, R1 one end connects, the L1 other end and the R1 other end, the C2 positive pole, R2 one end, C3 one end, R4 one end, T1 input the 1st pin connects, the D1 negative pole and the C3 other end, the R4 other end connects, anodal and T1 input the 2nd pin of D1, the Q1 connection that drains, the R2 other end is connected with R3 one end, the R3 other end and iW1692 the 6th pin, C5 one end connects, Q1 source electrode and R7 one end, R6 one end, iW1692 the 5th pin connects, the R6 other end and Q1 grid, R5 one end connects, the R5 other end is connected with iW1692 the 3rd pin, iW1692 the 2nd pin and the R7 other end, C4 one end, the C5 other end, the Z1 positive pole, C6 one end, R9 one end, T1 output the 4th pin, power supply ground connects, iW1692 the 1st pin and the C4 other end, the R9 other end, R8 one end connects, iW1692 the 4th pin and Z1 negative pole, the C6 other end, the D2 negative pole connects, anodal and the R8 other end of D2, T1 output the 3rd pin connects, T1 output the 5th pin is connected with D3 is anodal, D3 negative pole and R10 one end, C7 one end, the circuit anode output connects, T1 output the 6th pin and the R10 other end, the C7 other end, the circuit cathode output end connects.
In the present embodiment, R1 is that 4.7K, R2 are that 2.4M, R3 are that 2.4M, R4 are that 100K, R5 are that 300R, R6 are that 22K, R7 are that 2.7R, R8 are that 22K, R9 are that 3.3K, R10 are that 3.3K, FR1 are 10R; C1 is that 104/400V, C2 are that 3.3UF/400V, C3 are that 102/1000V, C4 are that 68P, C5 are that 470P, C6 are that 4.7UF, C7 are 22UF/16V; The Q1 model is IN60; The rectifier bridge model is MB8S; The D1 model is that IN4007, D2 model are that IN4148, D3 model are IN4148; Z1 is the 15V voltage stabilizing didoe; L1 is 1.0mH.Certainly, above-mentioned parameter is only for reference, when implementing this programme, can make modification according to actual environment.
Adopt above-mentioned components and parts and parameter, evidence has following advantage:
1. meet the GS authentication requesting, can cross the isolation voltage of 3750V, when spending for 10 seconds, leakage current is less than 1mA;
2. meet the CE/EMC authentication requesting, reach the EN55015/EN61000/EN61547 standard;
3. constant-current driving output;
4. power factor (PF): PF 〉=0.55;
5. reactive power consumption≤20%;
6. cooperate the back temperature rise≤30 ℃ of lighting a lamp with the high-capacity LED lamp pearl;
7. have lightning protection, open circuit and short-circuit protection and overheat protector function;
8. life-span 〉=50000 of driving power hour;
9. driving power is with low cost, with the cost basically identical of general common non-EMC circuit.
Input voltage of the present utility model is interchange 100V～260V/50Hz-60Hz, but driving power is not more than the LED lamp of 5W.This programme both had been applicable to the country of voltage 110～130V, and U.S. for example also is applicable to the country of voltage 220～240V, for example China.This small product size of the utility model is extra small, can place the product the inside of Φ 26mm*H17mm, can be placed in general the E27 lamp holder and GU10 holder structure, power factor (PF) reaches more than 0.55, and can be by the standard of light fixture class EMC (EN55015A), using great power LED to replace electricity-saving lamp becomes possibility.This programme can be avoided electric network electric voltage drop, reduces harmonic current and ground wire pulse current.
Existing active PFC (Power Factor Correction, power factor correction) circuit, directly the unidirectional sine wave after the rectification is made boosting inverter with booster circuit earlier and produce the 400V direct voltage, and then the 400V direct voltage is made quadratic transformation output burning voltage or stabling current.Though do the current harmonics problem that has solved input like this, but will be during owing to start shooting to empty electrochemical capacitor charging, the current impact of input when still having start, and twice conversion causes the circuit structure complexity, the converter volume is big, the cost height, transducer effciency is low, problems such as reliability decrease.With respect to existing active PFC circuit, circuit structure of the present utility model is simple, and volume is little, the reliability height, and cost is low.
Above content only is preferred embodiment of the present utility model, for those of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, this description should not be construed as restriction of the present utility model.
Claims (8)
1. a LED driving circuit is characterized in that, comprises alternating current input S1, alternating current input S2, rectifier bridge, chip iW1692, resistance R 1, R2, R3, R4, R5, R6, R7, R8, R9, R10, FR1, capacitor C 1, C2, C3, C4, C5, C6, C7, field-effect transistor Q1, inductance L 1, diode D1, D2, D3, voltage stabilizing didoe Z1, transformer T1, the circuit anode output, the circuit cathode output end; Wherein, FR1 is connected between alternating current input S1 and rectifier bridge ac input end the 1st pin, alternating current input S2 is connected with rectifier bridge ac input end the 3rd pin, rectifier bridge cathode output end the 4th pin and C1 one end, the C2 negative pole, power supply ground connects, cathode rectifier output the 2nd pin and the C1 other end, L1 one end, R1 one end connects, the L1 other end and the R1 other end, the C2 positive pole, R2 one end, C3 one end, R4 one end, T1 input the 1st pin connects, the D1 negative pole and the C3 other end, the R4 other end connects, anodal and T1 input the 2nd pin of D1, the Q1 connection that drains, the R2 other end is connected with R3 one end, the R3 other end and iW1692 the 6th pin, C5 one end connects, Q1 source electrode and R7 one end, R6 one end, iW1692 the 5th pin connects, the R6 other end and Q1 grid, R5 one end connects, the R5 other end is connected with iW1692 the 3rd pin, iW1692 the 2nd pin and the R7 other end, C4 one end, the C5 other end, the Z1 positive pole, C6 one end, R9 one end, T1 output the 4th pin, power supply ground connects, iW1692 the 1st pin and the C4 other end, the R9 other end, R8 one end connects, iW1692 the 4th pin and Z1 negative pole, the C6 other end, the D2 negative pole connects, anodal and the R8 other end of D2, T1 output the 3rd pin connects, T1 output the 5th pin is connected with D3 is anodal, D3 negative pole and R10 one end, C7 one end, the circuit anode output connects, T1 output the 6th pin and the R10 other end, the C7 other end, the circuit cathode output end connects.
2. LED driving circuit according to claim 1, it is characterized in that described R1 is that 4.7K, R2 are that 2.4M, R3 are that 2.4M, R4 are that 100K, R5 are that 300R, R6 are that 22K, R7 are that 2.7R, R8 are that 22K, R9 are that 3.3K, R10 are that 3.3K, FR1 are 10R.
3. LED driving circuit according to claim 2 is characterized in that, described C1 is that 104/400V, C2 are that 3.3UF/400V, C3 are that 102/1000V, C4 are that 68P, C5 are that 470P, C6 are that 4.7UF, C7 are 22UF/16V.
4. LED driving circuit according to claim 3 is characterized in that, described Q1 model is IN60.
5. LED driving circuit according to claim 4 is characterized in that, described rectifier bridge model is MB8S.
6. LED driving circuit according to claim 5 is characterized in that, described D1 model is that IN4007, D2 model are that IN4148, D3 model are IN4148.
7. LED driving circuit according to claim 6 is characterized in that, described Z1 is the 15V voltage stabilizing didoe.
8. LED driving circuit according to claim 7 is characterized in that, described L1 is 1.0mH.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920052193XU CN201365359Y (en) | 2009-03-06 | 2009-03-06 | Driving circuit for light emitting diode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920052193XU CN201365359Y (en) | 2009-03-06 | 2009-03-06 | Driving circuit for light emitting diode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201365359Y true CN201365359Y (en) | 2009-12-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200920052193XU Expired - Fee Related CN201365359Y (en) | 2009-03-06 | 2009-03-06 | Driving circuit for light emitting diode |
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| Country | Link |
|---|---|
| CN (1) | CN201365359Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104812118A (en) * | 2015-04-17 | 2015-07-29 | 华南理工大学 | Light emitting diode illumination drive circuit and method using alternating current commercial power |
-
2009
- 2009-03-06 CN CNU200920052193XU patent/CN201365359Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104812118A (en) * | 2015-04-17 | 2015-07-29 | 华南理工大学 | Light emitting diode illumination drive circuit and method using alternating current commercial power |
| CN104812118B (en) * | 2015-04-17 | 2017-03-01 | 华南理工大学 | A kind of LED illumination drive circuit of employing electric main and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Chongqing Eurostar Lighting Electric Appliance Co., Ltd. Assignor: Dongguan Anshang Chongguang Technology Co., Ltd. Contract record no.: 2012500000020 Denomination of utility model: Light emitting diode driving circuit Granted publication date: 20091216 License type: Exclusive License Record date: 20120411 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091216 Termination date: 20140306 |