Define Transformer
What is the principle of transformer
How it works??
Answers
A transformer is an electrical apparatus designed to convert alternating current from one voltage to another. It can be designed to "step up" or "step down" voltages and works on the magnetic induction principle. A transformer has no moving parts and is a completely static solid state device, which insures, under normal operating conditions, a long and trouble-free life. It consists, in its simplest form, of two or more coils of insulated wire wound on a laminated steel core. When voltage is introduced to one coil, called the primary, it magnetizes the iron core. A voltage is then induced in the other coil, called the secondary or output coil. The change of voltage (or voltage ratio) between the primary and secondary depends on the turns ratio of the two coils.
Explanation:
The basic principle on which the transformer works is Faraday's Law of Electromagnetic Induction or mutual induction between the two coils. It works on the alternating current only because an alternating flux is required for mutual induction between the two windings.