CN202425106U - LED (light-emitting diode) high-voltage power supply - Google Patents
LED (light-emitting diode) high-voltage power supply Download PDFInfo
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- CN202425106U CN202425106U CN201120481346XU CN201120481346U CN202425106U CN 202425106 U CN202425106 U CN 202425106U CN 201120481346X U CN201120481346X U CN 201120481346XU CN 201120481346 U CN201120481346 U CN 201120481346U CN 202425106 U CN202425106 U CN 202425106U
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Abstract
The utility model discloses an LED (light-emitting diode) high-voltage power supply, relating to the technical field of lighting devices. The LED (light-emitting diode) high-voltage power supply structurally comprises a power supply input positive end V+, a power supply input negative end V-, a conduction and radiation circuit unit, an input filtering circuit unit, a control circuit unit, a boosting circuit unit, a constant-current circuit unit, an output filtering circuit unit, an output load positive end LED+ and an output load negative end LED-. Compared with the prior art, the LED (light-emitting diode) high-voltage power supply provided by the utility model has the advantages of higher output voltage, high power supply efficiency up to 94%, work stability, low cost and high current control precision.
Description
Technical field
The utility model relates to the lighting device technical field, particularly relates to a kind of LED high voltage source.
Background technology
Because LED possesses that volume is little, in light weight, power consumption is low, long service life, high brightness, low in calories, environmental protection, recyclablely utilize again, advantage such as sturdy and durable, in recent years, people brought into use the LED lamp to remove to replace traditional light source.The LED power supply is widely used in building, road and bridge, square Architectural Equipment, lawn, curtain wall, mobile phone, computer, display panel, dynamic billboard, simulation animation, stadiums, the compartment, tailstock, traffic main artery, side lamp, mining industry production etc.
LED power supply and drive circuit; The required forward current output near constant current of certain confession LED should be arranged, high conversion rate is arranged again, the electric light transformation efficiency is a key factor of LED illumination; Otherwise will lose the LED energy-saving advantages; General its efficient of Switching Power Supply is about about 80% at present, and as the illuminating power supply of LED, its conversion efficiency still must further promote.
Power-efficient and power supply designed lines have confidential relation, and high efficiency power supply can improve the service efficiency of electric energy, can also reduce the oneself power consumption and the caloric value of power supply to a certain extent.
The voltage of the power supply output of LED lamp of the prior art is lower, exists power-efficient not high, job insecurity, and cost is high, the defective that the Control current precision is low.
Summary of the invention
The purpose of the utility model is to avoid weak point of the prior art and a kind of LED high voltage source is provided, and the voltage of this LED high voltage source output is higher, and power-efficient is high, can reach 94%, working stability, and cost is low, and the Control current precision is high.
The purpose of the utility model realizes through following technical scheme:
A kind of LED high voltage source includes power supply input anode V+, power supply input negative terminal V-, biography
Lead and raddiating circuit unit, input filter circuit unit, control circuit unit, booster circuit unit, constant-current circuit unit, output filter circuit unit, output loading anode LED+ and output loading negative terminal LED-;
Said conduction and raddiating circuit unit include protective tube FUSE1, adjustable resistance R24, adjustable resistance R2A, resistance R 19, resistance R 20, transformer T4, capacitor C 7, transformer T5, capacitor C 5, capacitor C 9 and rectifier bridge D2;
Said input filter circuit unit includes capacitor C 1;
Said control circuit unit includes resistance R 9, resistance R 13, resistance R 16, resistance R 17, resistance R 10, resistance R 6, resistance R 8, resistance R 7, resistance R 14, resistance R 21, resistance R 22, resistance R 2, resistance R 5, resistance R 12, resistance R 15, resistance R 18, capacitor C 8, capacitor C 10, capacitor C 11, capacitor C 14, diode D8, diode D9, diode D11, transistor D10 and control chip U1;
Said booster circuit unit comprises resistance R 1, resistance R 3, resistance R 4, resistance R 11, capacitor C 4, capacitor C 6, diode D1, diode D3, diode D6, diode D7 and transformer T1;
Said constant-current circuit unit includes capacitor C 12, resistance R 25, resistance R 26, resistance R 27 and diode D12;
Said output filter circuit unit includes capacitor C 2, capacitor C 3, capacitor C 15 and capacitor C 16;
Said power supply input anode V+ is connected with protective tube FUSE1 one end of said conduction and raddiating circuit unit; The protective tube FUSE1 other end is connected with 3 pin of adjustable resistance R24 one end, resistance R 19 1 ends and transformer T4; The adjustable resistance R24 other end is connected with 2 pin of adjustable resistance R2A one end, resistance R 20 1 ends, transformer T4; The adjustable resistance R2A other end is connected with power supply input negative terminal V-, and resistance R 19 other ends are connected with resistance R 20 other ends;
4 pin of transformer T4 are connected with 3 pin of capacitor C 7 one ends, transformer T5; Capacitor C 7 other ends are connected with 1 pin of transformer T4,2 pin of transformer T5; 4 pin of transformer T5 are connected with 2 pin of capacitor C 9 one ends, rectifier bridge D2; 1 pin of transformer T5 is connected with 4 pin of capacitor C 5 one ends, rectifier bridge D2, and capacitor C 9 other ends are connected with capacitor C 5 other ends, and 3 pin of rectifier bridge D2 are connected with power supply ground;
1 pin of the rectifier bridge D2 of said conduction and raddiating circuit unit is connected with capacitor C 1 one ends of said input filter circuit unit, and capacitor C 1 other end is connected with power supply ground;
1 pin of the rectifier bridge D2 of said conduction and raddiating circuit unit is connected with resistance R 1 one ends of said booster circuit unit, 8 pin of transformer T1; Resistance R 1 other end is connected with resistance R 3 one ends; Resistance R 3 other ends are connected with resistance R 11 1 ends; Resistance R 11 other ends are connected with 8 pin of diode D3 negative pole, diode D6 negative pole, capacitor C 6 one ends, control chip U1; Diode D6 is anodal to be connected with diode D7 negative pole, capacitor C 4 one ends, and capacitor C 4 other ends are connected with resistance R 4 one ends, diode D9 negative pole, and resistance R 4 other ends are connected with 4 pin of resistance R 6 one ends, transformer T1; 1 pin of transformer T1, diode D3 positive pole, capacitor C 6 other ends, diode D7 positive pole all are connected with power supply ground, and 5 pin of transformer T1 are anodal with diode D1,2 ends of transistor D10 are connected;
1 pin of the rectifier bridge D2 of said conduction and raddiating circuit unit is connected with resistance R 9 one ends of said control circuit unit; Resistance R 9 other ends are connected with resistance R 13 1 ends; Resistance R 13 other ends are connected with 3 pin of resistance R 16 1 ends, capacitor C 10 1 ends, control chip U1; Resistance R 16 other ends are connected with resistance R 17 1 ends, capacitor C 10 other ends, and resistance R 17 other ends are connected with power supply ground;
1 pin of control chip U1 is connected with resistance R 10 1 ends, capacitor C 11 1 ends, resistance R 8 one ends, resistance R 12 1 ends; Resistance R 12 other ends are connected with resistance R 5 one ends; Resistance R 5 other ends are connected with resistance R 2 one ends, and resistance R 2 other ends are connected with diode D1 negative pole, capacitor C 2 one ends, capacitor C 3 one ends, output loading anode LED+;
Resistance R 8 other ends are connected with resistance R 7 one ends, capacitor C 12 1 ends, resistance R 25 1 ends, resistance R 26 1 ends, resistance R 27 1 ends, diode D12 positive pole, output loading negative terminal LED-, and resistance R 7 other ends are connected with power supply ground;
2 pin of control chip U1 are connected with capacitor C 8 one ends, capacitor C 11 other ends, and capacitor C 8 other ends are connected with resistance R 10 other ends;
4 pin of control chip U1 are connected with resistance R 21 1 ends, resistance R 22 1 ends connect; Resistance R 21 other ends are connected with 3 pin, resistance R 18 1 ends of transistor D10; Resistance R 22 other ends are connected with capacitor C 14 1 ends, diode D9 positive pole, and capacitor C 14 other ends, resistance R 8 other ends are connected with power supply ground;
5 pin of control chip U1 are connected with resistance R 6 other ends;
6 pin of control chip U1 are connected with power supply ground;
7 pin of control chip U1 are connected with resistance R 14 1 ends; Resistance R 14 other ends are connected with diode D8 negative pole, resistance R 15 1 ends, diode D11 negative pole; Diode D8 is anodal to be connected with 1 pin, resistance R 15 other ends of transistor D10, and diode D9 is anodal to be connected with power supply ground;
Capacitor C 2 other ends of said output filter circuit unit are connected with capacitor C 3 other ends, capacitor C 15 1 ends, capacitor C 16 1 ends, and capacitor C 15 other ends, capacitor C 16 other ends are connected with power supply ground;
Preferably, said adjustable resistance R24 is set to 470 ohm, and adjustable resistance R2A is set to 470 ohm, and resistance R 19 is set to 1 megohm, and resistance R 20 is set to 1 megohm, and transformer T4 is set to 60,000,000 Henry, and transformer T5 is set to 60,000,000 Henry.
Another is preferred, and said capacitor C 1 is the electric capacity of 154 pico farads/630 volt, and resistance R 9 is set to 1 megohm; Resistance R 13 is set to 1 megohm, and resistance R 16 is set to 22 kilohms, and resistance R 10 is set to 12 kilohms; Resistance R 8 is set to 11.5 kilohms, and resistance R 7 is set to 100 ohm, and resistance R 21 is set to 220 ohm; Resistance R 22 is set to 91 kilohms, and resistance R 2 is set to 750 kilohms, and resistance R 5 is set to 750 kilohms; Resistance R 15 is set to 10 ohm, and resistance R 18 is set to 0.5 ohm.
Another is preferred, and said capacitor C 8 is set to 105 microfarads, and capacitor C 10 is set to 102 microfarads, and capacitor C 11 is the electric capacity of 154 microfarads/630 volt, and capacitor C 14 is the electric capacity of 10 microfarads/35 volt, and transistor D10 is 7 amperes/600 volts a transistor.
Another is preferred, and said resistance R 1 is set to 200 kilohms, and resistance R 3 is set to 200 kilohms.
Another is preferred, and said capacitor C 4 is set to 105 microfarads, and capacitor C 6 is the electric capacity of 47 microfarads/35 volt, and capacitor C 12 is set to 105 microfarads.
Another is preferred, and the model of said control chip U1 is L6561, and the model of transistor D10 is 4N60C, and the model of diode D6 is FR104, and the model of transformer T1 is EER24L.
Another is preferred, and the model of said diode D8, diode D9, diode D11, diode D12 is IN4148.
Another is preferred, and said diode D3 and diode D7 are set to voltage stabilizing didoe.
Another is preferred, and said capacitor C 2, capacitor C 3, capacitor C 6, capacitor C 15, capacitor C 16 all have been set to polar capacitor.
The beneficial effect of the utility model:
A kind of LED high voltage source of the utility model includes power supply input anode V+, power supply input
Negative terminal V-, conduction and raddiating circuit unit, input filter circuit unit, control circuit unit, booster circuit unit, constant-current circuit unit, output filter circuit unit, output loading anode LED+ and output loading negative terminal LED-; Conduction and raddiating circuit unit include protective tube FUSE1, adjustable resistance R24, adjustable resistance R2A, resistance R 19, resistance R 20, transformer T4, capacitor C 7, transformer T5, capacitor C 5, capacitor C 9 and rectifier bridge D2; The input filter circuit unit includes capacitor C 1; Control circuit unit includes resistance R 9, resistance R 13, resistance R 16, resistance R 17, resistance R 10, resistance R 6, resistance R 8, resistance R 7, resistance R 14, resistance R 21, resistance R 22, resistance R 2, resistance R 5, resistance R 12, resistance R 15, resistance R 18, capacitor C 8, capacitor C 10, capacitor C 11, capacitor C 14, diode D8, diode D9, diode D11, transistor D10 and control chip U1; The booster circuit unit comprises resistance R 1, resistance R 3, resistance R 4, resistance R 11, capacitor C 4, capacitor C 6, diode D1, diode D3, diode D6, diode D7 and transformer T1; The constant-current circuit unit includes capacitor C 12, resistance R 25, resistance R 26, resistance R 27 and diode D12; The output filter circuit unit includes capacitor C 2, capacitor C 3, capacitor C 15 and capacitor C 16.
Compared with prior art, the voltage of the utility model output is higher, and power-efficient is high, can reach 94%, working stability, and cost is low, and the Control current precision is high.
Description of drawings
Utilize accompanying drawing that the utility model is further specified, but the content in the accompanying drawing does not constitute any restriction to the utility model.
Fig. 1 is the structural representation of an embodiment of the utility model.
In Fig. 1, include:
Conduction and raddiating circuit unit 1;
Input filter circuit unit 2;
Constant-current circuit unit 5;
Output filter circuit unit 6.
Embodiment
In conjunction with following examples the utility model is described further.
A kind of LED high voltage source of present embodiment is as shown in Figure 1, include power supply input anode V+,
Power supply input negative terminal V-, conduction and raddiating circuit unit 1, input filter circuit unit 2, control circuit unit 3, booster circuit unit 4, constant-current circuit unit 5, output filter circuit unit 6, output loading anode LED+ and output loading negative terminal LED-.
Conduction and raddiating circuit unit 1 include protective tube FUSE1, adjustable resistance R24, adjustable resistance R2A, resistance R 19, resistance R 20, transformer T4, capacitor C 7, transformer T5, capacitor C 5, capacitor C 9 and rectifier bridge D2.
Input filter circuit unit 2 includes capacitor C 1.
Constant-current circuit unit 5 includes capacitor C 12, resistance R 25, resistance R 26, resistance R 27 and diode D12.
Output filter circuit unit 6 includes capacitor C 2, capacitor C 3, capacitor C 15 and capacitor C 16.
Power supply input anode V+ is connected with protective tube FUSE1 one end of conduction and raddiating circuit unit 1; The protective tube FUSE1 other end is connected with 3 pin of adjustable resistance R24 one end, resistance R 19 1 ends and transformer T4; The adjustable resistance R24 other end is connected with 2 pin of adjustable resistance R2A one end, resistance R 20 1 ends, transformer T4; The adjustable resistance R2A other end is connected with power supply input negative terminal V-, and resistance R 19 other ends are connected with resistance R 20 other ends.
4 pin of transformer T4 are connected with 3 pin of capacitor C 7 one ends, transformer T5; Capacitor C 7 other ends are connected with 1 pin of transformer T4,2 pin of transformer T5; 4 pin of transformer T5 are connected with 2 pin of capacitor C 9 one ends, rectifier bridge D2; 1 pin of transformer T5 is connected with 4 pin of capacitor C 5 one ends, rectifier bridge D2, and capacitor C 9 other ends are connected with capacitor C 5 other ends, and 3 pin of rectifier bridge D2 are connected with power supply ground.
1 pin of the rectifier bridge D2 of conduction and raddiating circuit unit 1 is connected with capacitor C 1 one ends of input filter circuit unit 2, and capacitor C 1 other end is connected with power supply ground.
1 pin of the rectifier bridge D2 of conduction and raddiating circuit unit 1 is connected with resistance R 1 one ends of booster circuit unit 4,8 pin of transformer T1; Resistance R 1 other end is connected with resistance R 3 one ends; Resistance R 3 other ends are connected with resistance R 11 1 ends; Resistance R 11 other ends are connected with 8 pin of diode D3 negative pole, diode D6 negative pole, capacitor C 6 one ends, control chip U1; Diode D6 is anodal to be connected with diode D7 negative pole, capacitor C 4 one ends, and capacitor C 4 other ends are connected with resistance R 4 one ends, diode D9 negative pole, and resistance R 4 other ends are connected with 4 pin of resistance R 6 one ends, transformer T1; 1 pin of transformer T1, diode D3 positive pole, capacitor C 6 other ends, diode D7 positive pole all are connected with power supply ground, and 5 pin of transformer T1 are anodal with diode D1,2 ends of transistor D10 are connected.
1 pin of the rectifier bridge D2 of conduction and raddiating circuit unit 1 is connected with resistance R 9 one ends of control circuit unit 3; Resistance R 9 other ends are connected with resistance R 13 1 ends; Resistance R 13 other ends are connected with 3 pin of resistance R 16 1 ends, capacitor C 10 1 ends, control chip U1; Resistance R 16 other ends are connected with resistance R 17 1 ends, capacitor C 10 other ends, and resistance R 17 other ends are connected with power supply ground.
1 pin of control chip U1 is connected with resistance R 10 1 ends, capacitor C 11 1 ends, resistance R 8 one ends, resistance R 12 1 ends; Resistance R 12 other ends are connected with resistance R 5 one ends; Resistance R 5 other ends are connected with resistance R 2 one ends, and resistance R 2 other ends are connected with diode D1 negative pole, capacitor C 2 one ends, capacitor C 3 one ends, output loading anode LED+.
2 pin of control chip U1 are connected with capacitor C 8 one ends, capacitor C 11 other ends, and capacitor C 8 other ends are connected with resistance R 10 other ends.
4 pin of control chip U1 are connected with resistance R 21 1 ends, resistance R 22 1 ends connect; Resistance R 21 other ends are connected with 3 pin, resistance R 18 1 ends of transistor D10; Resistance R 22 other ends are connected with capacitor C 14 1 ends, diode D9 positive pole, and capacitor C 14 other ends, resistance R 8 other ends are connected with power supply ground.
5 pin of control chip U1 are connected with resistance R 6 other ends.
6 pin of control chip U1 are connected with power supply ground.
7 pin of control chip U1 are connected with resistance R 14 1 ends; Resistance R 14 other ends are connected with diode D8 negative pole, resistance R 15 1 ends, diode D11 negative pole; Diode D8 is anodal to be connected with 1 pin, resistance R 15 other ends of transistor D10, and diode D9 is anodal to be connected with power supply ground.
Adjustable resistance R24 in the above-mentioned LED high voltage source is set to 470 ohm, and adjustable resistance R2A is set to 470 ohm, and resistance R 19 is set to 1 megohm, and resistance R 20 is set to 1 megohm, and transformer T4 is set to 60,000,000 Henry, and transformer T5 is set to 60,000,000 Henry.
The operation principle of the utility model is following:
Import 85 to 235 volts alternating voltage through power supply input anode V+ and power supply input negative terminal V-, handle entering input filter circuit unit, back 2, carry out filtering by the 2 pairs of voltages in input filter circuit unit through conduction and raddiating circuit unit 1; Reach the purpose of power conditioner; This voltage signal is handled through booster circuit unit 4, boosting is the electrical potential difference that can puncture PN junction among the LED in order to provide again, and is transferred to control circuit unit 3 through the voltage signal after boosting and carries out power factor correction; Judge whether to accomplish puncture through power factor correction and form conducting; Handle through constant-current circuit unit 5 after the conducting, make for certain change in voltage, change in current levels off to zero in the circuit; Stablizing of holding current; After carrying out filtering through output filter circuit unit 6 at last, by the high pressure of output loading anode LED+ with 360 volts of output loading negative terminal LED-outputs, be applicable to power 250 watts and 250 watts with interior LED lamp use.
The utility model compared with prior art, the voltage with output is higher, power-efficient is high, can reach 94%, working stability, cost is low, characteristics such as Control current precision height.
A kind of LED high voltage source, other structures of present embodiment are identical with embodiment 1, and difference is: the model of control chip U1 is L6561, and the model of transistor D10 is 4N60C, and the model of diode D6 is FR104, the model of transformer T1 is EER24L.
Model is that the control chip of L6561 is a power factor corrector, has stable performance, and cost is low, and band initiatively PFC is a power factor emendation function, characteristics such as Control current precision height.Model is that the diode of FR104 is a fast recovery diode.
The model of diode D8, diode D9, diode D11, diode D12 is IN4148.IN4148 is a kind of small-sized speed-sensitive switch diode, and on-off ratio is rapider, in circuit, realizes the effect that unidirectional conducting is isolated.
Diode D3 and diode D7 are set to voltage stabilizing didoe.Voltage stabilizing didoe is a kind of very high-resistance semiconductor device that before critical reverse breakdown voltage, all has, and after the puncture, the voltage at its two ends remains unchanged basically.After the voltage stabilizing didoe place in circuit, if because supply voltage fluctuates, or other reason is when causing in the circuit each point variation in voltage, the voltage at load two ends will remain unchanged basically.
Should be noted that at last; Above embodiment only be used to explain the utility model technical scheme but not to the restriction of the utility model protection range; Although the utility model has been done detailed description with reference to preferred embodiment; Those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement the technical scheme of the utility model, and do not break away from the essence and the scope of the utility model technical scheme.
Claims (10)
1. a LED high voltage source is characterized in that: include power supply input anode V+, power supply input negative terminal V-, conduction and raddiating circuit unit, input filter circuit unit, control circuit unit, booster circuit unit, constant-current circuit unit, output filter circuit unit, output loading anode LED+ and output loading negative terminal LED-;
Said conduction and raddiating circuit unit include protective tube FUSE1, adjustable resistance R24, adjustable resistance R2A, resistance R 19, resistance R 20, transformer T4, capacitor C 7, transformer T5, capacitor C 5, capacitor C 9 and rectifier bridge D2;
Said input filter circuit unit includes capacitor C 1;
Said control circuit unit includes resistance R 9, resistance R 13, resistance R 16, resistance R 17, resistance R 10, resistance R 6, resistance R 8, resistance R 7, resistance R 14, resistance R 21, resistance R 22, resistance R 2, resistance R 5, resistance R 12, resistance R 15, resistance R 18, capacitor C 8, capacitor C 10, capacitor C 11, capacitor C 14, diode D8, diode D9, diode D11, transistor D10 and control chip U1;
Said booster circuit unit comprises resistance R 1, resistance R 3, resistance R 4, resistance R 11, capacitor C 4, capacitor C 6, diode D1, diode D3, diode D6, diode D7 and transformer T1;
Said constant-current circuit unit includes capacitor C 12, resistance R 25, resistance R 26, resistance R 27 and diode D12;
Said output filter circuit unit includes capacitor C 2, capacitor C 3, capacitor C 15 and capacitor C 16;
Said power supply input anode V+ is connected with protective tube FUSE1 one end of said conduction and raddiating circuit unit; The protective tube FUSE1 other end is connected with 3 pin of adjustable resistance R24 one end, resistance R 19 1 ends and transformer T4; The adjustable resistance R24 other end is connected with 2 pin of adjustable resistance R2A one end, resistance R 20 1 ends, transformer T4; The adjustable resistance R2A other end is connected with power supply input negative terminal V-, and resistance R 19 other ends are connected with resistance R 20 other ends;
4 pin of said transformer T4 are connected with 3 pin of capacitor C 7 one ends, transformer T5; Capacitor C 7 other ends are connected with 1 pin of transformer T4,2 pin of transformer T5; 4 pin of transformer T5 are connected with 2 pin of capacitor C 9 one ends, rectifier bridge D2; 1 pin of transformer T5 is connected with 4 pin of capacitor C 5 one ends, rectifier bridge D2, and capacitor C 9 other ends are connected with capacitor C 5 other ends, and 3 pin of rectifier bridge D2 are connected with power supply ground;
1 pin of the rectifier bridge D2 of said conduction and raddiating circuit unit is connected with capacitor C 1 one ends of said input filter circuit unit, and capacitor C 1 other end is connected with power supply ground;
1 pin of the rectifier bridge D2 of said conduction and raddiating circuit unit is connected with resistance R 1 one ends of said booster circuit unit, 8 pin of transformer T1; Resistance R 1 other end is connected with resistance R 3 one ends; Resistance R 3 other ends are connected with resistance R 11 1 ends; Resistance R 11 other ends are connected with 8 pin of diode D3 negative pole, diode D6 negative pole, capacitor C 6 one ends, control chip U1; Diode D6 is anodal to be connected with diode D7 negative pole, capacitor C 4 one ends, and capacitor C 4 other ends are connected with resistance R 4 one ends, diode D9 negative pole, and resistance R 4 other ends are connected with 4 pin of resistance R 6 one ends, transformer T1; 1 pin of transformer T1, diode D3 positive pole, capacitor C 6 other ends, diode D7 positive pole all are connected with power supply ground, and 5 pin of transformer T1 are anodal with diode D1,2 ends of transistor D10 are connected;
1 pin of the rectifier bridge D2 of said conduction and raddiating circuit unit is connected with resistance R 9 one ends of said control circuit unit; Resistance R 9 other ends are connected with resistance R 13 1 ends; Resistance R 13 other ends are connected with 3 pin of resistance R 16 1 ends, capacitor C 10 1 ends, control chip U1; Resistance R 16 other ends are connected with resistance R 17 1 ends, capacitor C 10 other ends, and resistance R 17 other ends are connected with power supply ground;
1 pin of said control chip U1 is connected with resistance R 10 1 ends, capacitor C 11 1 ends, resistance R 8 one ends, resistance R 12 1 ends; Resistance R 12 other ends are connected with resistance R 5 one ends; Resistance R 5 other ends are connected with resistance R 2 one ends, and resistance R 2 other ends are connected with diode D1 negative pole, capacitor C 2 one ends, capacitor C 3 one ends, output loading anode LED+;
Said resistance R 8 other ends are connected with resistance R 7 one ends, capacitor C 12 1 ends, resistance R 25 1 ends, resistance R 26 1 ends, resistance R 27 1 ends, diode D12 positive pole, output loading negative terminal LED-, and resistance R 7 other ends are connected with power supply ground;
2 pin of said control chip U1 are connected with capacitor C 8 one ends, capacitor C 11 other ends, and capacitor C 8 other ends are connected with resistance R 10 other ends;
4 pin of said control chip U1 are connected with resistance R 21 1 ends, resistance R 22 1 ends connect; Resistance R 21 other ends are connected with 3 pin, resistance R 18 1 ends of transistor D10; Resistance R 22 other ends are connected with capacitor C 14 1 ends, diode D9 positive pole, and capacitor C 14 other ends, resistance R 8 other ends are connected with power supply ground;
5 pin of said control chip U1 are connected with resistance R 6 other ends;
6 pin of said control chip U1 are connected with power supply ground;
7 pin of said control chip U1 are connected with resistance R 14 1 ends; Resistance R 14 other ends are connected with diode D8 negative pole, resistance R 15 1 ends, diode D11 negative pole; Diode D8 is anodal to be connected with 1 pin, resistance R 15 other ends of transistor D10, and diode D9 is anodal to be connected with power supply ground;
Capacitor C 2 other ends of said output filter circuit unit are connected with capacitor C 3 other ends, capacitor C 15 1 ends, capacitor C 16 1 ends, and capacitor C 15 other ends, capacitor C 16 other ends are connected with power supply ground;
Capacitor C 12 other ends of said constant-current circuit unit, resistance R 25 other ends, resistance R 26 other ends, resistance R 27 other ends, diode D12 negative pole all are connected with power supply ground.
2. a kind of LED high voltage source according to claim 1; It is characterized in that: said adjustable resistance R24 is set to 470 ohm; Adjustable resistance R2A is set to 470 ohm, and resistance R 19 is set to 1 megohm, and resistance R 20 is set to 1 megohm; Transformer T4 is set to 60,000,000 Henry, and transformer T5 is set to 60,000,000 Henry.
3. a kind of LED high voltage source according to claim 1 is characterized in that: said capacitor C 1 is the electric capacity of 154 pico farads/630 volt, and resistance R 9 is set to 1 megohm; Resistance R 13 is set to 1 megohm, and resistance R 16 is set to 22 kilohms, and resistance R 10 is set to 12 kilohms; Resistance R 8 is set to 11.5 kilohms, and resistance R 7 is set to 100 ohm, and resistance R 21 is set to 220 ohm; Resistance R 22 is set to 91 kilohms, and resistance R 2 is set to 750 kilohms, and resistance R 5 is set to 750 kilohms; Resistance R 15 is set to 10 ohm, and resistance R 18 is set to 0.5 ohm.
4. a kind of LED high voltage source according to claim 1; It is characterized in that: said capacitor C 8 is set to 105 microfarads; Capacitor C 10 is set to 102 microfarads; Capacitor C 11 is the electric capacity of 154 microfarads/630 volt, and capacitor C 14 is the electric capacity of 10 microfarads/35 volt, and transistor D10 is 7 amperes/600 volts a transistor.
5. a kind of LED high voltage source according to claim 1 is characterized in that: said resistance R 1 is set to 200 kilohms, and resistance R 3 is set to 200 kilohms.
6. a kind of LED high voltage source according to claim 1 is characterized in that: said capacitor C 4 is set to 105 microfarads, and capacitor C 6 is the electric capacity of 47 microfarads/35 volt, and capacitor C 12 is set to 105 microfarads.
7. a kind of LED high voltage source according to claim 1 is characterized in that: the model of said control chip U1 is L6561, and the model of transistor D10 is 4N60C, and the model of diode D6 is FR104, and the model of transformer T1 is EER24L.
8. a kind of LED high voltage source according to claim 1 is characterized in that: the model of said diode D8, diode D9, diode D11, diode D12 is IN4148.
9. a kind of LED high voltage source according to claim 1 is characterized in that: said diode D3 and diode D7 are set to voltage stabilizing didoe.
10. a kind of LED high voltage source according to claim 1 is characterized in that: said capacitor C 2, capacitor C 3, capacitor C 6, capacitor C 15, capacitor C 16 all have been set to polar capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120481346XU CN202425106U (en) | 2011-11-28 | 2011-11-28 | LED (light-emitting diode) high-voltage power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120481346XU CN202425106U (en) | 2011-11-28 | 2011-11-28 | LED (light-emitting diode) high-voltage power supply |
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| Publication Number | Publication Date |
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| CN202425106U true CN202425106U (en) | 2012-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201120481346XU Withdrawn - After Issue CN202425106U (en) | 2011-11-28 | 2011-11-28 | LED (light-emitting diode) high-voltage power supply |
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| CN102858076A (en) * | 2012-10-24 | 2013-01-02 | 东莞健达照明有限公司 | LED (Light Emitting Diode) spotlight circuit compatible with electronic transformer |
| CN103139961A (en) * | 2011-11-28 | 2013-06-05 | 东莞市福地电子材料有限公司 | Light-emitting dioxide (LED) high voltage power source |
| CN105722283A (en) * | 2014-12-02 | 2016-06-29 | 中兴通讯股份有限公司 | Current-type LCD backlight boosting method and current-type LCD backlight boosting circuit |
-
2011
- 2011-11-28 CN CN201120481346XU patent/CN202425106U/en not_active Withdrawn - After Issue
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103139961A (en) * | 2011-11-28 | 2013-06-05 | 东莞市福地电子材料有限公司 | Light-emitting dioxide (LED) high voltage power source |
| CN103139961B (en) * | 2011-11-28 | 2014-12-10 | 东莞市福地电子材料有限公司 | Light-emitting dioxide (LED) high voltage power source |
| CN102858076A (en) * | 2012-10-24 | 2013-01-02 | 东莞健达照明有限公司 | LED (Light Emitting Diode) spotlight circuit compatible with electronic transformer |
| CN102858076B (en) * | 2012-10-24 | 2014-09-10 | 东莞健达照明有限公司 | LED (Light Emitting Diode) spotlight circuit compatible with electronic transformer |
| CN105722283A (en) * | 2014-12-02 | 2016-06-29 | 中兴通讯股份有限公司 | Current-type LCD backlight boosting method and current-type LCD backlight boosting circuit |
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Granted publication date: 20120905 Effective date of abandoning: 20141210 |
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