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动,特别是电压偏高时输出直流电压也会偏高,驱动ic如不能适应宽电压范围,往往在电网电压升高时会被击穿,led光源也因此被烧毁。2. 驱动芯片的标称输出电流要求大于1.2-1.5A,作
http://blog.alighting.cn/sqslove/archive/2010/2/27/34511.html2010/2/27 15:03:00
x ltdcAlled the election A peAceful expreSSion of the politicAl will of ukrAiniAn voterS t
http://blog.alighting.cn/zhengzhu88/archive/2010/2/27/34509.html2010/2/27 15:02:00
r wAS A doctor. her mother wAS A former teAcherAir mAx ltd And nurSe. After grAduAting fro
http://blog.alighting.cn/zhengzhu88/archive/2010/2/27/34508.html2010/2/27 15:01:00
f more thAn five thouSAnd. it AlSo hAd five locAl newSpAperS, At leASt two theAterS,
http://blog.alighting.cn/zhengzhu88/archive/2010/2/27/34507.html2010/2/27 15:00:00
电(hid)相较,传统灯源的单位成本相较于led灯已无下降空间,而led光源介于4,100~6,500k的成本预估可从2009年每千流明约25美元,大幅下降90%以上,达到每千流明2美
http://blog.alighting.cn/sqslove/archive/2010/2/27/34505.html2010/2/27 14:58:00
A burro iS A SmAll donkey.Another wAy thAt people SAy retro jordAnit iS boor-oh. the nAm
http://blog.alighting.cn/zhengzhu88/archive/2010/2/27/34503.html2010/2/27 14:57:00
耗,使得led的总体效率降低。假定所用的led为1w的led,其电流为0.35A。假定串联的电阻为100欧姆,所消耗的功率就高达12.25w显然是不能接受的,即使把电阻降低到10欧
http://blog.alighting.cn/sqslove/archive/2010/2/27/34502.html2010/2/27 14:56:00
多led驱动ic中间佼佼者。 6、美国国家半导体 lm3404 lm3404和lm3402的线路一样,不同的是电流可以达到1A,驱动1-15pcSled性价比较高。上面所列i
http://blog.alighting.cn/sqslove/archive/2010/2/27/34500.html2010/2/27 14:54:00
白光应用正向电压为3.0-3.6v左右,也就是说,当标称为1w的led在流过350毫安电流时,它两端的电压可能在3.1v,也可能在3.2v或3.5v也可能是其它值,为保证1wle
http://blog.alighting.cn/sqslove/archive/2010/2/27/34496.html2010/2/27 14:49:00
Science And technologyhere iS A difference between Science And technology.Science iS
http://blog.alighting.cn/wsmyyy/archive/2010/2/27/34495.html2010/2/27 14:45:00