毛细管润湿LED实验设计毕业论文
上传时间： 2013-10-20
上传用户：yuanwenjiao
主要探讨LED光源与传统光源在光电转换效率、亮度、灯具形态等方面的比较
上传时间： 2013-12-17
上传用户：cuibaigao
A light-emitting diode (LED) is a semiconductor device that emits narrow-spectrum incoherent light when forward-biased.The color of the emitted light depends on the chemical composition of the semiconductor material used, and can benear-ultraviolet, visible or infrared. LEDs are more prevalent today than ever before, replacing traditional incandescent andfluorescent bulbs in many lighting applications. Incandescents use a heated filament, are subject to breakage and burnoutand operate at a luminous efficiency of 2% to 4%. Fluorescents are more efficient, at 7% to 12%, but require highdrive voltage and contain mercury, a toxic substance that may be eventually banned in certain countries. LEDs, however,produce light directly through electroluminescence, operate at low voltage and can deliver over 20% luminous efficiency.
上传时间： 2013-11-07
上传用户：xiaoyuer
LED驱动
上传时间： 2013-11-13
上传用户：pol123
LED交流与经验
上传时间： 2013-10-16
上传用户：ynzfm
LED方面的
上传时间： 2013-11-06
上传用户：hustfanenze
钲铭科电子SM7022芯片（7-12W）LED电源方案设计文档，购买电源芯片，整套方案免费
上传时间： 2013-10-31
上传用户：13788529953
钲铭科电子SM7012_7022_芯片（4-7W）LED电源方案设计文档，购买芯片的话，整套方案免费
上传时间： 2013-10-08
上传用户：pkzz021
led驱动方案
上传时间： 2014-11-29
上传用户：tianjinfan
LED照明的优化设计
上传时间： 2013-10-10
上传用户：momofiona
