An approach to reduce AC LED flicker

Abstract

In this paper, we investigate a circuit design to reduce light flicker from an alternating current (AC) light-emitting diode (LED) lighting system. AC LEDs in the commercial marketplace have been criticized for the light flicker that they produce. In general, light flicker is an unwelcome phenomenon in a lighting application because of the health hazards it may cause. Some solutions have been proposed to reduce flicker from light sources, but they suffer from issues such as low power factor, low power efficiency, or bulky size. Here we propose an approach that can effectively reduce light flicker from an AC LED lighting system while maintaining normal power factor and high power efficiency.