CN202425106U

CN202425106U - A LED high voltage power supply

Info

Publication number: CN202425106U
Application number: CN201120481346XU
Authority: CN
Inventors: 王维昀; 陈中坤; 陈小东
Original assignee: DONGGUAN FORTUNE ELECTRONIC MATERIAL CO LTD
Current assignee: DONGGUAN FORTUNE ELECTRONIC MATERIAL CO LTD
Priority date: 2011-11-28
Filing date: 2011-11-28
Publication date: 2012-09-05
Anticipated expiration: 2021-11-28

Abstract

The utility model provides a LED high voltage power supply, relates to lighting device technical field, and its structure is including power input positive terminal V +, power input negative terminal V-, conduction and radiation circuit unit, input filter circuit unit, control circuit unit, boost circuit unit, constant current circuit unit, output filter circuit unit, the positive terminal LED + of output load and output load negative terminal LED-, compare with prior art, the utility model discloses a LED high voltage power supply has the voltage of output higher, and power efficiency is high, can reach 94%, and job stabilization, with low costs, characteristics that the control current precision is high.

Description

A kind of LED high voltage source

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;

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.

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;

Control circuit unit 3;

Booster circuit unit 4;

Constant-current circuit unit 5;

Output filter circuit unit 6.

Embodiment

In conjunction with following examples the utility model is described further.

embodiment 1.

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.

Control circuit unit 3 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.

Booster circuit unit 4 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.

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+.

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 output filter circuit unit 6 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 constant-current circuit unit 5, 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.

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.

Capacitor C 1 in the above-mentioned LED high voltage source is the electric capacity of 154 pico farads/630 volt, and resistance R 9 is set to 1 megohm, and resistance R 13 is set to 1 megohm; Resistance R 16 is set to 22 kilohms, and resistance R 10 is set to 12 kilohms, and resistance R 8 is set to 11.5 kilohms; Resistance R 7 is set to 100 ohm, and resistance R 21 is set to 220 ohm, and resistance R 22 is set to 91 kilohms; Resistance R 2 is set to 750 kilohms; Resistance R 5 is set to 750 kilohms, and resistance R 15 is set to 10 ohm, and resistance R 18 is set to 0.5 ohm.

Capacitor C 8 in the above-mentioned LED high voltage source 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.

Resistance R 1 in the above-mentioned LED high voltage source is set to 200 kilohms, and resistance R 3 is set to 200 kilohms.

Capacitor C 4 in the above-mentioned LED high voltage source 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.

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.

embodiment 2.

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.

Capacitor C 2, capacitor C 3, capacitor C 6, capacitor C 15, capacitor C 16 all have been set to polar capacitor.There are the withstand voltage and the capacity of polar capacitor all bigger.

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

1. A LED high-voltage power supply, characterized in that it includes a power input positive terminal V+, a power input negative terminal V-, a conduction and radiation circuit unit, an input filter circuit unit, a control circuit unit, a boost circuit unit, and a constant current circuit Unit, output filter circuit unit, output load positive terminal LED+ and output load negative terminal LED-;

The conduction and radiation circuit unit includes a fuse FUSE1, an adjustable resistor R24, an adjustable resistor R2A, a resistor R19, a resistor R20, a transformer T4, a capacitor C7, a transformer T5, a capacitor C5, a capacitor C9 and a rectifier bridge D2;

The input filter circuit unit includes a capacitor C1;

The control circuit unit includes resistor R9, resistor R13, resistor R16, resistor R17, resistor R10, resistor R6, resistor R8, resistor R7, resistor R14, resistor R21, resistor R22, resistor R2, resistor R5, resistor R12, resistor R15, resistor R18, capacitor C8, capacitor C10, capacitor C11, capacitor C14, diode D8, diode D9, diode D11, transistor D10 and control chip U1;

The boost circuit unit includes a resistor R1, a resistor R3, a resistor R4, a resistor R11, a capacitor C4, a capacitor C6, a diode D1, a diode D3, a diode D6, a diode D7 and a transformer T1;

The constant current circuit unit includes a capacitor C12, a resistor R25, a resistor R26, a resistor R27 and a diode D12;

The output filtering circuit unit includes a capacitor C2, a capacitor C3, a capacitor C15 and a capacitor C16;

The power input positive terminal V+ is connected to one end of the fuse FUSE1 of the conduction and radiation circuit unit, the other end of the fuse FUSE1 is connected to one end of the adjustable resistor R24, one end of the resistor R19 and the 3 pin of the transformer T4, and the other end of the adjustable resistor R24 One end is connected to one end of the adjustable resistor R2A, one end of the resistor R20, and pin 2 of the transformer T4, the other end of the adjustable resistor R2A is connected to the negative terminal V- of the power input, and the other end of the resistor R19 is connected to the other end of the resistor R20;

Pin 4 of the transformer T4 is connected to one end of the capacitor C7 and pin 3 of the transformer T5, the other end of the capacitor C7 is connected to pin 1 of the transformer T4 and pin 2 of the transformer T5, pin 4 of the transformer T5 is connected to one end of the capacitor C9, and the rectifier bridge D2 The 2-pin connection of the transformer T5 is connected to one end of the capacitor C5 and the 4-pin of the rectifier bridge D2, the other end of the capacitor C9 is connected to the other end of the capacitor C5, and the 3-pin of the rectifier bridge D2 is connected to the power ground;

Pin 1 of the rectifier bridge D2 of the conduction and radiation circuit unit is connected to one end of the capacitor C1 of the input filter circuit unit, and the other end of the capacitor C1 is connected to the power ground;

Pin 1 of the rectifier bridge D2 of the conduction and radiation circuit unit is connected to one end of the resistor R1 of the booster circuit unit and pin 8 of the transformer T1, the other end of the resistor R1 is connected to one end of the resistor R3, and the other end of the resistor R3 is connected to the resistor R11 One end is connected, the other end of the resistor R11 is connected to the negative pole of the diode D3, the negative pole of the diode D6, one end of the capacitor C6, and the pin 8 of the control chip U1, the positive pole of the diode D6 is connected to the negative pole of the diode D7, and one end of the capacitor C4, and the other end of the capacitor C4 is connected to the one end of the resistor R4, Connect the negative pole of diode D9, the other end of resistor R4 is connected to one end of resistor R6, and the 4 pin of transformer T1, the 1 pin of transformer T1, the positive pole of diode D3, the other end of capacitor C6, and the positive pole of diode D7 are all connected to the power ground, and the 5 pin of transformer T1 Connect with the anode of diode D1 and the 2 terminals of transistor D10;

Pin 1 of the rectifier bridge D2 of the conduction and radiation circuit unit is connected to one end of the resistor R9 of the control circuit unit, the other end of the resistor R9 is connected to one end of the resistor R13, the other end of the resistor R13 is connected to one end of the resistor R16, and one end of the capacitor C10. The 3 pins of the chip U1 are connected, the other end of the resistor R16 is connected to one end of the resistor R17, the other end of the capacitor C10 is connected, and the other end of the resistor R17 is connected to the power ground;

Pin 1 of the control chip U1 is connected to one end of the resistor R10, one end of the capacitor C11, one end of the resistor R8, and one end of the resistor R12, the other end of the resistor R12 is connected to one end of the resistor R5, the other end of the resistor R5 is connected to one end of the resistor R2, and the other end of the resistor R2 Connect with the cathode of diode D1, one end of capacitor C2, one end of capacitor C3, and the positive end of output load LED+;

The other end of the resistor R8 is connected to one end of the resistor R7, one end of the capacitor C12, one end of the resistor R25, one end of the resistor R26, one end of the resistor R27, the positive pole of the diode D12, and the negative output load terminal LED-, and the other end of the resistor R7 is connected to the power ground;

Pin 2 of the control chip U1 is connected to one end of the capacitor C8 and the other end of the capacitor C11, and the other end of the capacitor C8 is connected to the other end of the resistor R10;

Pin 4 of the control chip U1 is connected to one end of resistor R21 and one end of resistor R22, the other end of resistor R21 is connected to pin 3 of transistor D10 and one end of resistor R18, the other end of resistor R22 is connected to one end of capacitor C14 and the positive pole of diode D9. The other end of C14 and the other end of resistor R8 are connected to the power ground;

Pin 5 of the control chip U1 is connected to the other end of the resistor R6;

Pin 6 of the control chip U1 is connected to the power ground;

Pin 7 of the control chip U1 is connected to one end of the resistor R14, the other end of the resistor R14 is connected to the negative pole of the diode D8, one end of the resistor R15, and the negative pole of the diode D11, the positive pole of the diode D8 is connected to pin 1 of the transistor D10, and the other end of the resistor R15, and the diode D9 The positive pole is connected to the power ground;

The other end of the capacitor C2 of the output filter circuit unit is connected to the other end of the capacitor C3, one end of the capacitor C15, and one end of the capacitor C16, and the other end of the capacitor C15 and the other end of the capacitor C16 are connected to the power ground;

The other end of the capacitor C12, the other end of the resistor R25, the other end of the resistor R26, the other end of the resistor R27, and the cathode of the diode D12 of the constant current circuit unit are all connected to the power ground.

2. A LED high-voltage power supply according to claim 1, characterized in that: the adjustable resistor R24 is set to 470 ohms, the adjustable resistor R2A is set to 470 ohms, the resistor R19 is set to 1 megaohm, and the resistor R20 is set to is 1 megohm, transformer T4 is set to 60 mehenry, and transformer T5 is set to 60 mehenry.

3. A LED high-voltage power supply according to claim 1, characterized in that: the capacitor C1 is a capacitor of 154 picofarads/630 volts, the resistor R9 is set to 1 megaohm, the resistor R13 is set to 1 megaohm, and the resistor R16 is set to 22 kohms, resistor R10 is set to 12 kohms, resistor R8 is set to 11.5 kohms, resistor R7 is set to 100 ohms, resistor R21 is set to 220 ohms, resistor R22 is set to 91 kohms, and resistor R2 is set to 750 kohms, resistor R5 is set to 750 kohms, resistor R15 is set to 10 ohms, and resistor R18 is set to 0.5 ohms.

4. A LED high-voltage power supply according to claim 1, characterized in that: the capacitor C8 is set to 105 microfarads, the capacitor C10 is set to 102 microfarads, the capacitor C11 is a capacitor of 154 microfarads/630 volts, and the capacitor C14 is a 10 microfarad/35 volt capacitor and transistor D10 is a 7 amp/600 volt transistor.

5. A LED high-voltage power supply according to claim 1, characterized in that: the resistor R1 is set to 200 kohms, and the resistor R3 is set to 200 kohms.

6 . The LED high-voltage power supply according to claim 1 , wherein the capacitor C4 is set to 105 microfarads, the capacitor C6 is a capacitor of 47 microfarads/35 volts, and the capacitor C12 is set to 105 microfarads.

7. The LED high-voltage power supply according to claim 1, wherein the model of the control chip U1 is L6561, the model of the transistor D10 is 4N60C, the model of the diode D6 is FR104, and the model of the transformer T1 is EER24L.

8. The LED high-voltage power supply according to claim 1, wherein the diode D8, the diode D9, the diode D11, and the diode D12 are all models of IN4148.

9. A LED high-voltage power supply according to claim 1, characterized in that: the diode D3 and the diode D7 are set as Zener diodes.

10 . The LED high voltage power supply according to claim 1 , wherein the capacitors C2 , C3 , C6 , C15 and C16 are all set as polarized capacitors. 11 .