The transformer is an electrical device that consists of a cable coil located next to one or more coils and used to join two or more alternate current circuits (AC) taking advantage of the induction effect between the coils.

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While it is true that we are not certain when the electricity originated, it is no less true that we have reference to the year 600 BC, the Greek philosopher TALES DE MILETO rubbed a rod of amber with a wool or skin, loads were obtained that attracted small Objects, and rubbing a lot of time could cause the appearance of a spark; However, it was the Greek philosopher THEOPHRASTUS (374-287 BC), the first to establish in a treaty that other substances have this same power, thus leaving a record of the first scientific study on electricity

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