Question

What is the difference between transformer and autotransformer?

Answer 1

Autotransformer is a single winding transformer that works on the principle of Faraday's Law of electromagnetic induction. Mostly used in low voltage range, for industrial, commercial and laboratory purposes. Also known as variac, dimmer stat, etc. autotransformer can be single and three-phase.Apr 8, 2020

Autotransformer : Principle of Operation, Constructional and ...

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There are several differences between the autotransformer and the conventional transformer. One of the major difference between them is that the autotransformer has only one winding whereas the conventional transformer has two separate windings.