An electrical transformer is a device that is used to transfer electrical energy from one circuit to another through electromagnetic induction. It is designed to change the voltage of an alternating current (AC) electrical power supply, and it does this by using the principles of electromagnetic induction to convert the electrical energy from one voltage level to another.
A transformer consists of two or more windings of insulated wire, which are wound around a core of magnetic material. When an AC voltage is applied to one of the windings (the primary winding), it creates an alternating magnetic field in the core. This alternating magnetic field then induces an AC voltage in the other winding (the secondary winding). The ratio of the number of turns in the primary winding to the number of turns in the secondary winding determines the transformation ratio of the transformer, and therefore the output voltage.
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