Design of Drived by AC Directly High Power LED Lighting System with Dimming
PAN Chao
LIU Tingzhang
ZOU Yajun
ZHANG Yingqi
ZHOU Zhuangli
Abstract：Driving LED chip by alternating current is the direction of the LED power supply development . The LED lighting system is designed in the paper. The LED lighting system with PWM dimming is directly driven by Power Frequency AC, and it is not driven by electrolytic capacitor or transformer. The Analysis of the principle of sectional LED circuit directly driven by AC and the design of PWM dimming circuit are introduced. The experimental results show that, the LED lighting system has good dimming performance, and the characteristics of low THD value and high power factor have certain application value.
Keywords：AC drivesectional drivingPWM dimmingLED
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 56-60 )