One dollar variable fan controller
Mountaindude has been spending some time lately working on 12V fan controllers and thought he’d share his experiences so far.
“While trying out various computer and network gear, I quite often find the fans too loud. They are of course there for a good reason, but experience tells that the device usually works just fine with less cooling.
Going through a 7805 data sheet for other reasons, I suddenly realized that a 7805 set up in variable voltage configuration should work great as a fan controller. These 12V fans usually run just fine down to 5-6 volts, but at lower RPMs, and thus quieter. Just what was needed!”
You can find project details and schematic at Ptarmigan Labs.
Via the contact form.This entry was posted in components, how-to and tagged 7805, fan controller.