Transistors, MOSFETs and Relays, Simplified
A microcontroller pin can only give a tiny current. Transistors, MOSFETs and relays are how it switches motors, pumps and lamps.
Words to know
- Transistor
- Think of it like a tap on a big water pipe, turned by a small hand.
- MOSFET
- Think of it like a gate opened by pressing on it, not by water flowing through it.
- Relay
- Think of it like a guard who opens a big gate when you ring a small bell.
