摘要
基于脉宽调制电路(PWM)原理,研究设计大电流小占空比驱动大功率LED直流脉冲电源,实验测试比较了不同占空比脉冲方式下,点亮LED的实际消耗功率、瞬态光亮强度、温升情况等,探索通过脉冲电源驱动提高LED发光效率的实现方案,并取得初步实验结果。
Based on the pulse width modulate （PWM）principle, this paper designed a DC pulse power with small duty cycle and high current to drive high-power LED. The actual consumption power, transient light intensity and temperature conditions of LED with different pulse duty cycle mode, were tested in laboratory, and explore through pulse power flooding fixed to enhance the luminous efficiency of LED, and achieved the preliminary experimental results.
出处
《电子技术应用》
北大核心
2008年第6期67-69,共3页
Application of Electronic Technique
关键词
PWM
脉冲电流驱动
大功率LED
光效
电源效率
PWM
current pulse drive
high-power LED
luminous efficiency
power efficiency
