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LED constant-current drive power source

A technology of constant current drive and power supply, applied in the field of LED constant current drive power supply, can solve problems such as long life of LED, LED aging, poor constant current effect, etc., and achieve simple and reasonable structure, high stability, and improved work efficiency Effect

Inactive Publication Date: 2017-05-10
温朋亮
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The led constant current drive power supply is a voltage converter that converts the power supply into a specific voltage and current to drive the LED to emit light. The conventional drive power supply has disadvantages such as poor constant current effect and poor stability, which will cause premature aging of the LED and cannot achieve The characteristics of LED long life, etc.

Method used

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  • LED constant-current drive power source

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Embodiment Construction

[0011] In the following, the present invention will be further described in conjunction with the accompanying drawings and specific embodiments, so as to understand the technical idea claimed in the present invention more clearly.

[0012] See figure 1 , the present invention relates to a constant current driving power supply for LEDs, and its preferred embodiment includes a lightning protection unit 1, an EMI unit 2, a rectification unit 3, a voltage conversion unit 4, a filter unit 5, an output unit 6, a sampling unit 7, and a PWM control unit Unit 8 , short circuit protection unit 9 , current limiting protection unit 10 and output overvoltage protection unit 11 .

[0013] The lightning protection unit 1 , the EMI unit 2 , the rectification unit 3 , the voltage conversion unit 4 , the filter unit 5 and the output unit 6 are electrically connected in sequence. When the commercial power is connected to the LED constant current drive power supply of the present invention, the ...

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PUM

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Abstract

The invention discloses an LED constant-current drive power source, comprising a lightning-proof circuit, an EMI (electromagnetic interference) unit for removing high-frequency clutter and interfering signal , a rectifying unit, a voltage conversion unit, a filter unit, an output unit, a sampling unit and a PWM (pulse width modulation) control unit that are electrically connected in sequence; the sampling unit is used for collecting voltage and current signals of the output unit in real time and transmitting to the PWM control unit, and the PWM control unit outputs PWM wave of corresponding duty ratio to the voltage conversion unit according to the voltage and current signals so as to adjust working current of the output unit. The LED constant-current drive power source is simple and reasonable in structure, allows effectively improved working efficiency and reduced cost, has high stability, and can provide good constant-current control.

Description

technical field [0001] The invention relates to an LED driving power supply, in particular to an LED constant current driving power supply. Background technique [0002] LED has the advantages of high efficiency, long life, low power consumption, and safety, and has been widely used in public facilities such as urban landscape decoration, traffic stations, and commercial advertisements. In recent years, with the continuous development of output power, luminous efficiency and high-power packaging technology of single-crystal single-tube LEDs, LEDs have wider application prospects as general lighting. The led constant current drive power supply is a voltage converter that converts the power supply into a specific voltage and current to drive the LED to emit light. The conventional drive power supply has disadvantages such as poor constant current effect and poor stability, which will cause premature aging of the LED and cannot achieve The characteristics of LED long life, etc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/50H05B45/37Y02B20/30
Inventor 温朋亮
Owner 温朋亮
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