INTRODUCTION TO TRANSFORMER

A transformer may bee defined as a static electric device that transfers electrical energy from one circuit to another circuit at the same frequency but with changed voltage(or current or both) through a magnetic circuit.

Principle of Operation

When alternating voltage V

When a load is connected to the secondary side, current will start flowing in the secondary winding. Voltage induced in the secondary winding is responsible to deliver power to the load connected to it.

In this way power is transferred from one circuit (primary) to another (secondary) winding through a magnetic circuit by electromagnetic induction. This is the working principle of the transformer.