The core part of the transformer is that the transformer is a device that converts the AC voltage, current and impedance. When an AC current is passed through the primary coil, an AC flux is generated in the core (or core) to induce a voltage in the secondary coil ( Or current).
Classified by cooling method: dry (self-cooling) transformer, oil immersed (self-cooling) transformer, fluoride (evaporative cooling) transformer.
Classified according to the moisture-proof method: open transformer, potted transformer, sealed transformer.
According to the core or coil structure classification: core transformer (insert core, C core, ferrite core), shell transformer (insert core, C core, ferrite core), Ring transformer, metal foil transformer.
Classified by power phase number: single-phase transformer, three-phase transformer, multi-phase transformer.
Classified by use: power transformer, voltage regulator, audio transformer, intermediate frequency transformer, high frequency transformer, pulse transformer.