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LED driving circuit and LED lamp

A technology of LED driving and LED lights, which is applied in the direction of circuit layout, lamp circuit layout, electric light source, etc., can solve the problems of ineffective LED brightness adjustment, poor output current accuracy and stability, etc., to improve accuracy and stability, Realize the effect of multi-level adjustment

Active Publication Date: 2010-05-12
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an LED driving circuit, aiming at solving the problems of the existing LED driving circuit that the adjustment effect on the LED brightness is not obvious, and the accuracy and stability of the output current are relatively poor

Method used

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  • LED driving circuit and LED lamp
  • LED driving circuit and LED lamp
  • LED driving circuit and LED lamp

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Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0022] figure 1 The structure of the LED driving circuit provided by the embodiment of the present invention is shown.

[0023] The LED driving circuit includes a rectification and filtering unit 100 , a switch unit 200 , a feedback unit 300 , an input current detection unit 400 , and a control unit 500 whose input terminals are connected to AC power terminals.

[0024] The input end of the switch unit 200 is connected to the output end of the rectification and filtering unit 100, and the output end of the switch unit 200 is connected to the LED lamp for controlling the output current of the LED d...

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Abstract

The invention is applicable to the technical field of an LED and provides an LED driving circuit and an LED lamp. In the invention, the LED driving circuit is provided with an input current detection unit, a feedback unit, a control unit and a switch unit, wherein the feedback unit leads the LED driving circuit to be a closed loop circuit, the control unit controls the switch unit and the LED driving circuit to output current according to signals sent by the input current detection unit and the feedback unit, thus improving the effect of the LED driving circuit in adjusting the brightness of LED, further realizing the multi-stage adjustment of the brightness of the LED and boosting the accuracy and stability when the LED driving circuit outputs current.

Description

technical field [0001] The invention belongs to the technical field of LEDs, and in particular relates to an LED driving circuit and an LED lamp. Background technique [0002] The LED drive circuit is an important part of the LED lamp. The LED drive circuit converts the AC power input from the input terminal of the AC power supply into the current that drives the LED to work. [0003] By changing the AC input of the LED drive circuit, the LED drive circuit can output drive currents of different sizes, thereby adjusting the brightness of the LED, but the existing LED drive circuit has no obvious adjustment effect on the LED brightness, and the existing LED drive circuit output The accuracy and stability of the current are relatively poor. Contents of the invention [0004] The object of the present invention is to provide an LED driving circuit, aiming at solving the problems of the existing LED driving circuit that the adjustment effect on the brightness of the LED is not...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02H02M7/08F21V23/00F21Y101/02F21Y115/10
Inventor 周明杰谭威
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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