... transformer ADSL transformer EFD series transformer ER series transformer RM series transformer EP series transformer EPC series transformer EE series transformer EC, EE, ... T (ring) iron power core and DC filter inductor RM series: RM-4, 5, 6, 8, 10, 12, ... types:sinle-terminal backward start,single-terminal forward start,push-pull.Applied in home electronic appliances,communitcation system,illumination, ...