Variable AutoTransformer

A variable autotransformer is a type of transformer that allows for adjustable voltage output. Unlike standard transformers that have fixed primary and secondary windings, a variable autotransformer has a single winding that acts as both the primary and secondary winding. The adjustable feature is achieved by tapping into this winding at different points, allowing for continuous voltage regulation.

Advantages:

Efficiency: Variable autotransformers are more efficient than traditional transformers because they have lower losses.

Compact Size: They are usually smaller and lighter due to the shared winding.

Fine Voltage Control: They offer a smooth and precise range of voltage control, which is useful in many applications, such as testing equipment or regulating motors.