Low-voltage transformers below 600V become low voltage transformer. A low-voltage transformer is a device that is composed of a primary coil, a secondary coil, and an iron core (magnetic core), and changes the voltage through electromagnetic induction. In electrical equipment and wireless circuits, it is often used for voltage rise and fall, impedance matching, and safety isolation. The main functions of the transformer are: voltage transformation; current transformation, impedance transformation; isolation; voltage stabilization (magnetic saturation transformer) and so on.