What is a power transformer?

A power transformer is a static electrical device used to convert an alternating current (AC) voltage (or current) of a certain value into one or more different voltages (or currents) at the same frequency.

It is a static device with two or more windings that, in order to transmit electrical energy, converts the AC voltage and current of one system into the voltage and current of another system through electromagnetic induction at the same frequency. Typically, the values ​​of these currents and voltages are different.