What is Transformer

What is Transformer?

A transformer is an electric device used to transfers electrical energy from one circuit to another. It works based on the principle of electromagnetic induction and mutual induction. It is commonly used to increase or decrease the voltage levels without a change in the frequency.

TRANSFORMER

WORKING PRINCIPLE

Electrical Energy transfer Between circuits as a result of mutual inductance between two or more coils.

TRANSFORMER - BLOCK DIAGRAM

Explanation

If winding or coil is supplied by an alternating electrical source, the alternating current through the winding produces a continually changing magnetic flux around the winding.

According to Mutual induction, If another winding is brought close to this winding, some portion of this alternating flux will link with the second winding. As this flux is continually changing in its amplitude and direction, there will be a changing flux linkage in the second winding or coil.

According to Faraday’s law of electromagnetic induction, there will be an EMF induced in the second winding. When Circuit of the secondary winding is closed, Then a current will flow through it.

FLUX LINKAGE DRAWING

Construction:

Primary Winding of Transformer - It produces magnetic flux when it is connected to an electrical source.

Magnetic Core of Transformer - The magnetic flux produced by the primary winding, that will pass through this low reluctance path linked with secondary winding and create a closed magnetic circuit.

Secondary Winding of Transformer - The flux, produced by primary winding, passes through the core, will link with the secondary winding. This winding also wounds on the same core and gives the desired output of the transformer