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入电压的变化。与传统两级转换(buck to Boost)电路结构相比, speic电路省掉一级功率转换电路,可以显著提高背光效率,实验结果如图8所示。 图8 sepic电路效率
http://blog.alighting.cn/sqslove/archive/2010/2/27/34473.html2010/2/27 14:01:00
g you can Boost to trip an automobile. types of the freight you scope to the spark. there i
http://blog.alighting.cn/helloalight/archive/2010/1/18/25569.html2010/1/18 12:14:00
何产生?通常白光 led 驱动器都属于开关电源器件(buck、Boost 、charge pump 等),其开关频率都在 1mhz左右,因此在驱动器的典型应用中是不会产生人耳听得
http://blog.alighting.cn/lux1923/archive/2009/9/24/10353.html2009/9/24 9:26:00
阻就设定了一串wled的工作电流。但是它的最大问题在于:由于使用了电感来进行升压(Boost),电感是通过把电能转换成磁能来储存能量的,在工作过程中,不停的进行电磁转换、这样就可能产
http://blog.alighting.cn/gaogong123/archive/2009/8/31/5762.html2009/8/31 18:02:00
e wall, not glare. 4. changes in more than: a small bulb can be used to make the effect o
http://blog.alighting.cn/v-photron/archive/2009/6/24/4124.html2009/6/24 15:21:00
器。按照电路功能划分,有降压的step-down、升压的Boost,还有能升降压的buck-Boost或sepic等,以及正压转成负压的invertor等。其中品种最多,发展最
http://blog.alighting.cn/kuaiguan/archive/2009/5/30/3662.html2009/5/30 12:46:00
案例相关信息:
http://blog.alighting.cn/winhos/archive/2009/2/28/13219.html2009/2/28 20:43:00
bulb type:par38 led bulbbase type:e27input voltage:85--260v ac with reversed polarit
http://blog.alighting.cn/aweiekr/archive/2009/2/19/2430.html2009/2/19 17:51:00
bulb type: mr16 led bulbbase type: gu5.3input voltage: ac/dc 12vinput power: 3.6woutpu
http://blog.alighting.cn/aweiekr/archive/2009/2/19/2428.html2009/2/19 17:39:00
d with a salty bag! a hypnotic staff of the magi was devilish. when another bul
http://blog.alighting.cn/wqsgqx1/archive/2009/2/16/2376.html2009/2/16 10:58:00