In electrical engineering, an autotransformer is an electrical transformer with only one winding. The "auto" (Greek for "self") prefix refers to the single coil acting alone. In an autotransformer, portions of the same winding act as both the primary winding and secondary winding sides of the transformer. In contrast, an ordinary transformer ...

2012年2月24日 · An autotransformer (or auto transformer) is a type of electrical transformer with only one winding. The “auto” prefix refers to the single coil acting alone (Greek for “self”) – not to any automatic mechanism.

2024年2月27日 · What is an AutoTransformer? An autotransformer is an electrical transformer characterized by having a solitary winding. The "auto" prefix refers to the single coil acting alone (In Greek "self") - not to any programmed instrument.

Autotransformer is a special type of transformer that consists of a single winding. This winding is used for both primary & secondary (High voltage & low voltage) sides. It is widely used for its variable output voltage function, lower cost & small size.

2024年9月20日 · An auto transformer is a type of electrical transformer that consists of a single winding that serves both as a primary winding as well as a secondary winding.

What is an Auto transformer? An autotransformer is an electrical machine that contains only one winding and is used to transform or change the level of voltage or current in an electrical system or circuit.

The autotransformer has many uses and applications including the starting of induction motors, used to regulate the voltage of transmission lines, and can be used to transform voltages when the primary to secondary ratio is close to unity.

2024年9月8日 · Get an idea about Autotransformer, its design, types, features, applications, auto transformer starter, 3-phase auto transformer & examples.

2025年1月12日 · If an auto transformer is used to supply low voltage from a high voltage and there is a break in the secondary winding, the full primary voltage comes across the secondary terminal which is dangerous to the operator and the equipment. So the auto transformer should not be used to for interconnecting high voltage and low voltage system.

An autotransformer is a single-winding electrical transformer. It is also known as variac or dimmer stat. It is made of a single-winding coil. This single-winding setup makes them cheaper, more efficient, and have better voltage regulation than normal transformers.