Fluorescent lamp control circuit and fluorescent lamp thereof

Abstract

The invention relates to a fluorescent lamp control circuit, comprising an MCU control unit, and at least one drive unit, wherein the MCU control unit generates at least one path of first PWM signals; each drive unit controls the conduction or cutting off of a switch tube therein respectively according to one corresponding PWM signal so as to generate high-frequency alternating-current voltage; and each high-frequency alternating-current voltage respectively controls a corresponding fluorescent lamp tube to emit light and work. The invention also relates to a fluorescent lamp using the control circuit. The fluorescent lamp control circuit adopts an MCU main control unit to output a plurality of paths of independent PWM signals, thus being capable of controlling a plurality of fluorescent lamp tubes to emit light and work independently. The invention has simple circuit structure, lower cost, easier judgment for fault branches and convenient maintenance.

Description

technical field [0001] The invention relates to the technical field of lighting fixtures, and more specifically, to a fluorescent lamp control circuit and a fluorescent lamp thereof. Background technique [0002] With the development of science and technology, fluorescent lamps are widely used in people's lives. The control circuit generally uses an integrated drive chip to output a fixed PWM signal to the drive circuit, and the drive circuit then inverts the DC voltage into a high-frequency AC voltage output required by the lamp. , so as to drive the fluorescent tube to work [0003] However, this integrated driver chip only outputs a pair of PWM signals, and can only independently control one driving circuit. Control, so that when a short circuit occurs, it is impossible to judge which path is the fault, which brings a lot of inconvenience during use. It can be seen that if multiple driving circuits need to be independently controlled, multiple integrated driving chips m...

AI Technical Summary

Problems solved by technology

[0003] However, this integrated driver chip only outputs a pair of PWM signals, and can only independently control one driving circuit. control, so that when a short circuit occurs, it is impossible to judge which path is the fault, which brings a lot of inconvenience during use

It can be seen that if it is necessary to independently control multiple drive circuits, multiple integrated drive chips must be used, which makes the circuit structure complex and increases the cost.

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