A Power transformer designed to transfer periodic current or energy. It is an electrical device which transfers power from one electric circuit to another by way of electromagnetic stimulation.Transformer is an absolutely inert and solid shape apparatus which does not have any moving part. It can be operated in standard working conditions and this is generally assure unproblematic and a long life. A very simple transformer made of two or more coil of shield, where wire wound on a plastic-coated steel interior. Primary voltage apply a pull on the iron core, this initiate to one coil then the secondary or output coil voltage which bring on the other coil.

Adjustment of these primary and secondary depends on the rotate fraction of the two coils. Only one output coil cannot limit the transformers. These power transformers have the capacity to provide a whole range of power supply from that one input coil, with the help of windings on the secondary side separately. The electricity which is being formed depends on how many times the coil is lesion around the center. If voltage is high then it means the more times it's wounded round the center. Power transformer becomes very useful by providing absolute systems with all requirements from the one resource.