Use constant current to drive LED The isolation buck topologies,with high conversion efficiency Main specification:1,Input voltage:220VAC2,Inputinput frequency:40~60Hz3,Input current:0.096~0.1A4,Power factor:0.92~0.945,Output voltage:60~130V6,Max Output power:20W7,Output current:120~140mA 180~200mA 240~260mA8,Efficiency:90%9,Prohibit no-load10,Protect function:overcurrent,overvoltage11,Work ...