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لینک دانلود و خرید پایین توضیحات فرمت فایل word و قابل ویرایش و پرینت تعداد صفحات: 50 Transformer Transformer This article is about device in electrical energy. For the toy line franchise, see Transformers. For other uses, see Transformer (disambiguation). Pole-mounted single-phase transformer with center-tapped secondary. Note use of the ground conductor as one leg of the primary feeder. A transformer is a device that transfers electrical energy from one circuit to another through inductively coupled conductors — the transformer's coils or "windings". Except for air-core transformers, the conductors are commonly wound around a single iron-rich core, or around separate but magnetically-coupled cores. A varying current in the first or "primary" winding creates a varying magnetic field in the core (or cores) of the transformer. This varying magnetic field induces a varying electromotive force (EMF) or "voltage" in the "secondary" winding. This effect i ...
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