Quick notes on MOSFET modes of operation.


I’ve used FETs for a few projects. For switches they are fairly simple rudimentary components that are fairly easy to build into a circuit.

Basic Modes of Operation

N-Channel

For Enhancement Mode FETs

Cutoff: Vgs > Vth

Linear: Vgs > Vth and Vds < (Vgs - Vth)

Saturation: Vgs > Vth and Vds > (Vgs - Vth)

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