Undoqo wesiguquli se-EFD udibanisa ukutyeba okugqithisileyo kunye noxinano lwamandla aphezulu kakhulu ukuya kuthi ga kwi-1MHz nangaphezulu. Yonke i-transformer, esekelwe kuluhlu lwe-EFD, inobude obuphantsi besakhiwo kunalo naluphi na ulwakhiwo olukhoyo olusezantsi olunomthamo ofanayo wemagnethi.