Ty for the response,
I was planing on using a DC PC fan with 3 wires, measuring the RPM with the tacho output , puting in a pid control loop and then controlling the speed trought a mosfet.
I'm interested do you have a chip that would hold the fan at a stable rpm, with as little as possible fluctuation. Or something that would hold the fan at a set rpm programmed by either a chip (i'm using an arm development board for now) or some other way.
