If you ever work with a circuit that controls a decent amount of current, you will often encounter a FET – a Field-Effect Transistor. Whether you want to control a couple of powerful LEDs, sw… ...

How Do Transistors Work? At its core, a transistor is an electronic gatekeeper. It controls the flow of electric current through a semiconductor material.

Remove the voltage, and the channel vanishes—switching it “off.” Despite these technical differences, all transistors perform the same job: using a small input to control a larger output.

WEST LAFAYETTE, Ind. — Computer chips use billions of tiny switches, called transistors, to process information. The more transistors on a chip, the faster the computer. A material shaped like a ...