This article introduces the principle and application of transformers. Transformers work based on electromagnetic induction, consisting of a primary coil, secondary coil, and core, altering AC voltage and current to transmit electrical energy. They are classified into power, test, instrument, and special - purpose transformers. Power transformers convert voltage to transmit electrical energy, with rated capacity indicating their transmission ability. Amorphous alloy core distribution transformers are energy - saving due to low no - load losses. Design and structural layout should prevent external forces on the core and involve proper parameter selection. Read More »