照明工程学报Issue(3)：74-79,6.DOI:10.3969/j.issn.1004-440X.2014.03.015
LED 脉冲电流驱动与发光效率的研究
The Study of LED Pulse Current Drive and Luminous Efficacy
温怀疆1
作者信息
- 1. 浙江传媒学院电子信息学院，浙江杭州 310018
- 折叠
摘要
Abstract
This thesis demonstrates that the amplitude , duty ratio , frequency and waveform of pulse will affect LED luminous efficacy , through research and experiment on the relationship between pulse current drivers and luminous efficacy of white LEDs .The luminous efficacy of LED will be more strongly affected when pulse current is high peak with low duty ratio .LED has relatively higher luminous efficacy when the pulse frequency in the range of 200~2000Hz.LED luminous efficacy will be improved certainly when pulse is rated peak with low duty ratio .The smaller the pulse ripple factor , the higher the LED luminous efficacy is.Compared to triangular wave , sine wave , square wave of pulse waveform , pulse of the triangular wave will produce higher luminous efficacy .关键词
LED/脉冲驱动/发光效率/占空比Key words
LED/pulse drive/luminous efficacy/duty ratio分类
信息技术与安全科学引用本文复制引用
温怀疆..LED 脉冲电流驱动与发光效率的研究[J].照明工程学报,2014,(3):74-79,6.
