A transformer is an electrical device used to transfer electrical energy between circuits while changing the voltage level—either stepping it up or down—without changing the frequency.
Transformers work based on a scientific concept called Electromagnetic Induction—
Main Parts of a Transformer
Primary Coil – receives electrical power
Secondary Coil – delivers transformed power
Core (Iron Core) – provides a path for magnetic flux
Types of Transformers
Step-Up Transformer
Increases voltage (used in power generation stations)
Step-Down Transformer
Decreases voltage (used in homes and offices)
Distribution Transformer
Supplies electricity to consumers (e.g., street transformers)
Power Transformer
Used in transmission networks for high voltage