what is a 1 phase transformer?

A single-phase transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction, using a single alternating current (AC) phase. It consists of primary and secondary windings wrapped around a magnetic core. The primary winding receives input voltage, creating a magnetic field that induces a voltage in the secondary winding. Single-phase transformers are commonly used in residential and light commercial applications for voltage step-up or step-down purposes.