... ,transformers for fluorescent lights,mini led transformer,led transformer 110v 1.features: transformer bobbin,ETD transformer bobbin,plastic bobbin for transformer,transformers nylon bobbin 2.advantage:1. various ... supply,main power transformer•EFD core : Auxiliary powr transformer,main power transformer,choke coils•EPC core :Auxiliary powr transformer,main power transformer•PQ core : applied ...