Transformer

 Transformer

A Transformer is a static electrical device which is used to transfer electrical energy from one AC circuit to another AC circuit with increase or decease voltage/current but without any change in frequency.

Construction:-

The Construction of a single phase transformer is as shown in below figure. It consists of two highly inductive coil wound on an iron or steel core. The Winding connected to AC Supply is called as Primary Winding and Winding Connected to load is called as secondary winding.

The Primary and Secondary Winding are Isolated from Each Other as well as from the iron core.

The Physical Basis Of Transformer is mutual induction between two circuits linked by a common magnetic flux.

Working Principle:-

When the Primary winding is connected to the 1 phase AC supply, an AC current produces an alternating flux in the core. Most of this changing flux gets linked with the secondary winding through the core. The varying flux will induce voltage in the secondary winding according to Faraday's laws of Electromagnetic Induction.

Types Of Transformer:-

a) Based on Construction:-

1. Core type transformer
2. Shell type transformer

b) Based on Application:-

1. Step-up transformer
2. Step-down transformer
3. 1:1 transformer