Transformer realizes the transmission of electric energy or signal through the principle of electromagnetic induction, which has the effect of voltage, current and impedance transformation. At present, there are many kinds of transformers in the market, and they have a wide range of applications. In power system, in order to reduce the loss of point energy in the transmission process, step-up transformer usually increases the voltage from the generator before long-distance transmission, At the same time, the transmission area is reached, and then the voltage is reduced through the step-down transformer, which is convenient for users.<br>
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