Simple fan controller
posted Apr 24th 2008 9:35pm by Will O'Brienfiled under: misc hacks
When I built my LumenLab projector, I used a thermal switch to run the fan. This simple control circuit looks like a nice alternative. The circuit is a simple adjustable temperature triggered Fet. If you know the resistance needed, you can replace the potentiometer with a cheap resistor. (You’ll want to use a DC fan)
I wonder, in the state that the fan doesn’t spin where the voltage is too low for it to start rotating, will it slowly burn out?