Clever ways to use ordinary parts to sense temperature? Answered
While designing a flyback driver circuit I figured the best way to cool the transistors in use would be to use the stock intel CPU cooler. They are small, compact, and effective, and the delta fan is of reasonable quality. I would like to control this PWM (4 pin) fan with the 2 extra comparators I have left over from my LM339.
What common passive (or active) components have a large enough temp-co to allow their use in sensing tempurature? Or will I just need to buy some specialized ICs purpose designed for this task?