OFFLINE LED DRIVER (Up to 277VAC) NO INDUCTORS, FILTERs, 0.9,">PF>0.9, THD<25%离线式LED驱动器(高达277VAC ) NO电感,滤波器, 0.9 “ \u003e PF \u003e 0.9 , THD \u003c 25 %