EFD transformateur yibanze ikomatanya byombi bikabije hamwe nimbaraga nyinshi zinjiza imbaraga-ubucucike kuri frequence igera kuri 1MHz kandi irenga. Buri transformateur, ishingiye kumurongo wa EFD, ifite uburebure bwinyubako yo hasi kurenza iyindi miterere isanzwe iriho igishushanyo mbonera gifite amajwi amwe.