A buck-boost transformer is a type of transformer used to either step up or step down voltage levels in an alternating current (AC) electrical system.
It is also known as an autotransformer, as it has a single winding with multiple taps that can be used to adjust the voltage level.
The operation of a buck-boost transformer is similar to that of a conventional transformer. However, in a buck-boost transformer, the primary winding is tapped at different points, allowing the transformer to step up or step down the voltage level by a certain amount.
Buck-boost transformers are commonly used in applications where the input voltage level may vary, or where a different voltage level is required for a specific load. They are often used in AC circuits for various applications, such as in lighting systems, motor control circuits, and power distribution systems.