Common PWN FAN doesn't stop on 0% PWM signal and still running on minimum RPM. It is possible to control the fan speed not by fan PWM, but by PWM of DC input. In that case the fan can be stopped, but ...

Of course, the standard way of controlling CPU fans these days is with PWM, so he built a circuit which essentially converts the PWM signal from the motherboard into a phantom thermistor.

We have a fan driver circuit from a customer that doesn't work. I think the design intent was to filter the gained-up (logic level) pwm signal. The pi-filter LC section has a cutoff of 72Khz, so I ...

This circuit is meant for a 12V fan. I use this controller for the Noctua NF-P12 redux-1700 PWM Fan. This is a dead-simple PWM fan controller that simply lowers the speed of the Noctua NF-P12 ...