Transformers transfer electrical energy from one electrical circuit to another through electromagnetic induction, with no change in frequency. Like people, they come in all sorts of shapes and sizes.

step-down transformers decrease the voltage. The transformer in the diagram above is a step-down transformer – there are fewer turns on the secondary coil than on the primary coil. Type of transformer ...

A journeyman line worker, Trenton Carlock, has created a mobile transformer lab that can fit in your pocket and allows you to practice transformer connections. The device is fully interactive and ...