... for LED driver,transformers for fluorescent lights,mini led transformer,led transformer 110v 1.features: transformer bobbin,ETD transformer bobbin,plastic bobbin for ... 20 to 80kHz Frequency Range,switching power supply, PCB, STB and other communication and medical equipments;EE, ... EC Type Transformer:Canter section of the core is round, easily design high-power switch transformer.Application:1, ...