现在的LED芯片价格都是大高,其实可以用简单的三极管电路来做DC-DC,AC-DC,1-3W的LED电路,降压电路效率在70%左右,恒流精度在10%以内,升压电路效率在90%以上,这是我目前能做到的,附上图,我不喜欢拿个什么专利垃圾IC来做什么恒流,丢人死了,大多专利的国产IC,没看出什么技术来,拿了国外IC抄的还说专利,那个IC是中国先有的?主要是天价
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