I have been tasked with retrofitting some small fans to an old car, to help move heated air into the footwells. Being a computer-type, I immediately bought some standard computer cooling fans.
The fans are DC, and the only rating information is 8-12V.
It was my hope that a basic potential divider with knobbed potentiometer would provide a voltage-based fan control:
I only ask because any search for "Fan Control" leads to pulse-width-modulation. Is it possible to control fan speed using this basic circuit above?