Transformer basic


Transformers are electrical devices consisting of two or more coils of wire used to transfer electrical energy by means of a changing magnetic field One of the main reasons that we use alternating AC voltages and currents in our homes and the workplace is that AC supplies can be easily generated at a convenient voltage, transformed (hence the name transformer) into much higher voltages and then distributed around the country using a national grid of pylons and cables over very long distances. you can know more from here...


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