Transformer – Definition, Types, Working Principle, Diagram

What is Transformer?

A transformer is a device that transfers electric power from one alternating-current circuit to another circuit without a change in frequency.

Working Principle

It works on the principle of Faraday’s Law of Electromagnetic Induction which states that “ the magnitude of voltage is directly proportional to the rate of change of flux.”

Construction of a Transformer

It mainly consists of

1. Magnetic circuit (consisting of core, limbs, yoke and damping structure).
2. Electrical circuit (consisting of primary and secondary windings)
3. Dielectric circuit (consisting of insulations in different forms and used at different places)
4. Tanks and accessories (conservator, breather, bushings, cooling tubes, etc.)

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