لینک دانلود و خرید پایین توضیحات فرمت فایل word و قابل ویرایش و پرینت تعداد صفحات: 26 Transformer From Wikipedia, the free encyclopedia Jump to: navigation, search For other uses, see Transformer (disambiguation). / Three-phase pole-mounted step-down transformer. A transformer is a device that transfers electrical energy from one circuit to another through inductively coupledelectrical conductors. A changing current in the first circuit (the primary) creates a changing magnetic f ...