Homonym: transformer (Device)
A transformer is an electrical device that changes the voltage of alternating current (AC) in a circuit. It consists of two coils of wire, known as the primary and secondary windings, wrapped around a core. When electricity flows through the primary winding, it creates a magnetic field that induces a voltage in the secondary winding, allowing for either an increase or decrease in voltage.
Transformers are essential in power distribution systems, enabling electricity to be transmitted over long distances efficiently. They are commonly found in substations and are crucial for supplying power to homes and businesses while maintaining safety and reliability in the electrical grid.