An autotransformer is a transformer that uses a common winding for both the primary and secondary windings. Essentially an inductor with a center-tap, an autotransformer is often used in power-supply boost-converter applications to achieve a higher output voltage, while limiting the peak flyback voltage seen by the power switch.

 - A transformer in which at least two windings have a common section. They are use to either "buck" or "boost" the incoming line voltage.

A transformer used to step voltage up or down. The primary and secondary windings share common turns, and it provides no isolation.

     A power transformer having one continuous winding that is tapped.

A special type of single coil transformer in which the output voltage can be easily varied. The autotransformer is thus employed to adjust the primary voltage applied to the stepup transformer which p [..]

A transformer in which part of the winding is common to both the primary and the secondary circuits.

Transformer in which both the primary and secondary currents flow through one common part of the coil. Auxiliary Power

A transformer that contains only one winding that serves as both the primary and the secondary winding.

A single winding transformer where the output is taken from taps on the winding.

1. A transformer with a single winding (electrically) in which the whole winding acts as the primary winding, and only part of the winding acts as the secondary (step-down); or part of the winding acts as the secondary (step-up).

interfacebus.com/Glossary-of-Terms.html">Dictionary of Engineering Terms Equipment Component Chassis Terms Wire Terms Antenna Terms Capacitor Terms Radar Terms Diode Terms Encoding Ter [..]

A transformer in which both primary and secondary coils, have turns in common. The step up or step down of voltage, is accomplished by taps in common windings.

A transformer in which both the primary and the secondary windings share common turns. It provides no isolation.