... coil for led lighting,coil with led light,bobbin core coil,transformer coil former 1.features: EFDtransformer for LED driver,magnetic ... type transformer:Switching Transformer with 20 to 80kHz Frequency Range,switching power supply, PCB, STB and other communication ... Specifications including bobbin, core, dimensional and winding drawing.2. Additional requirements.3. Estimated order quantity.EC Type ...