A transformer is a device that uses the principle of electromagnetic induction to change the AC voltage. Its main components are the primary coil, secondary coil, and iron core (magnetic core). The main functions include voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization, etc.

Transformers can be divided into distribution transformers, power transformers, combination transformers, dry-type transformers, oil immersed transformers, single-phase transformers, electric furnace transformers, rectifier transformers, etc. according to their uses, and are widely used in industries, agriculture, transportation, urban communities, and other fields.

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