File failed to load: https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/latest/jax/input/TeX/config.js

Sunday, January 3, 2021

Understanding MOSFETs for use in a thermostat

Basic MOSFET background and operation

MOSFET is basically a switch that can be controlled electronically - it's an acronym for Metal-Oxide-Semiconductor Field-Effect Transistor.  Here is the electronic diagram of a MOSFET, note it has 3 leads labelled D, G, S: