rabidscottsman has added a photo to the pool:
Breaking the Mosfet Rule
Photographed on a boxcar in Northfield Minnesota
Friday November 10th, 2023
Having no idea what Mosfet is, I consulted Wikipedia
The metal–oxide–semiconductor field-effect transistor (MOSFET, MOS-FET, or MOS FET) is a type of field-effect transistor (FET), most commonly fabricated by the controlled oxidation of silicon. It has an insulated gate, the voltage of which determines the conductivity of the device. This ability to change conductivity with the amount of applied voltage can be used for amplifying or switching electronic signals.