iron-core transformer

An iron-core transformer is an electronic device that transfers alternating-current electricity between circuits, altering the voltage. It operates on the principle of electromagnetic induction, where a changing current in a primary coil creates a magnetic field that induces a current in a secondary coil. The ratio of turns in the coils determines whether the voltage is increased (stepped up) or decreased (stepped down). Iron cores are used for audio-frequency applications and help confine the magnetic flux between coils. To minimize energy loss due to eddy currents, the iron core is laminated.12