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LED driver

A technology of LED driver and PCB board, which is applied in the direction of lighting devices, light sources, electrical components, etc., can solve the problems of low reliability and poor driving performance of LED drive circuits, achieve uniform brightness, prevent burnout, and ensure service life Effect

Inactive Publication Date: 2016-08-10
ZHONGSHAN GAOLE ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This is due to the unidirectional conductivity of the LED, so that the LED must be equipped with an LED driving circuit to work, and the reliability of the LED driving circuit is not high, and the driving performance is not good.

Method used

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Embodiment Construction

[0014] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0015] refer to Figure 1 to Figure 2 , propose an embodiment of the LED driver of the present invention:

[0016] The LED driver includes a PCB board, an electrically connected input protection circuit set on the PCB board, a step-down circuit 1 and a rectification filter circuit 2 . The AC input terminal is connected to the input protection circuit. The input protection circuit is composed of a fuse F. The function of the fuse F is to provide circuit safety protection. In the case of a circuit short circuit or severe overload, the fuse F will automatically fuse to break the circuit. open for short circuit protection or severe overload protection. The input end of the step-down circuit 1 is connected to the output end of the input protection circuit, and is used for stepping down the input high-voltage alternating ...

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Abstract

The present invention discloses an LED driver, which comprises an input protection circuit, a step-down circuit, a rectifying and filtering circuit and a voltage-dividing and current-limiting resistor. The input protection circuit, the step-down circuit, the rectifying and filtering circuit and the voltage-dividing and current-limiting resistor are electrically connected. The voltage-dividing and current-limiting resistor is used for the current-limiting protection of the LED. A filtering capacitor in the rectifying and filtering circuit comprises a housing and a disposed within the housing. The epoxy resin is filled between the inner cavity of the housing and the capacitor element. In this way, the insulation effect is good and the capacitor element can be well protected. The short-circuit phenomenon or the leakage phenomenon can be avoided. The opening end cover of the housing is provided with a rubber sealing plug. The rubber sealing plug is provided with a plug. The plug is electrically connected with a positive electrode lead and a negative electrode lead. The filtering capacitor is inserted onto a socket adapted to a PCB via the plug. The LED driver is convenient to install and replace.

Description

technical field [0001] The invention relates to the field of LED driving, in particular to an LED driver. Background technique [0002] LED lighting is a new type of light source that has developed rapidly in recent years, and its many good features make it more and more widely used. LED is a kind of electric light source with extremely long service life, and its service life can reach 100,000 hours. However, in practical applications, the actual service life of LED lights is not high, and some even break down in less than a year. This is due to the unidirectional conductivity of the LED, so that the LED must be equipped with an LED driving circuit to work, and the reliability of the LED driving circuit is not high, and the driving performance is not good. In the LED driving circuit, especially when the AC mains is driving the LED lamp, the LED driving circuit must have an input rectification filter circuit and an output rectification filter circuit. The input rectificatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/40
Inventor 吴高冰
Owner ZHONGSHAN GAOLE ELECTRONICS TECH CO LTD
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