A Thyristor LED Dimming Control Method and Dimming Circuit Design
Conventional thyristor dimming technology has many drawbacks when dimming LED light sources.This work designed a thyristor LED dimming control method and dimming circuit.The method used the analog dimming voltage out-put by the thyristor dimmer for open/closure switch of the power supply (flyback converter)chip,and converted the ana-log signal of the chopping AC power into a periodic square wave (PWM)current output to the LED,thereby achieving digitalized dimming of the LED.The specific circuit and design suggestions were given,and preliminary simulative verifi-cation was conducted.
万方数据
维普
