What is a isolation transformer?

An isolation transformer is a transformer in which the electrical circuits on the primary and secondary sides are not connected by wires. Transformer is called "transformer" in Japanese and is used to change the power supply voltage. In a general electric circuit, the power supply and the demand equipment are connected by conductors, but by using an isolation transformer, the conductors of the power supply and the demand equipment can be separated. Most transformers used for power supplies are isolation transformers.

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