... bobbin coil for led lighting,coil with led light,bobbin core coil,transformer coil former 1.features: EFDtransformer for LED driver,magnetic ... with 20 to 80kHz Frequency Range,switching power supply, PCB, STB and other communication and medical equipments;EE, ... filters, creepage-alamers. Note: Various specifications can be produced based on the customer’s requirement.1. Specifications including bobbin, ...