INTELEC 2009 - 31st International Telecommunications Energy Conference, Page. 1-5
Abstract
This paper presents and LED color control system using color control algorithm which adjusts its color temperature and illuminance independently. The proposed system consists of a power factor correction (PFC) circuit, LED driving circuit, and a digital controller. The color temperature variation range of the proposed LED lighting system is 3500-7500°K, and its illuminance one is 500-1500 lux. Within these range, the color temperature and illuminance relative deviations are as low as ±1%.