Recent content by MrPCB

Basically this is for a 3D printer cooling fan. Its a 40x40x20 Sunon fan rated at 24V. PWM is basically running off of a Rasperry Pi. I have a 24v mosfet in between. On cheaper fans it works no problem I can set duty cycles anywhere between 1 and 99 % without issue. I have the option of setting...

Has anyone ever tried disabling or bypassing the feature on some DC fans that allow them to detect that they've stalled. I'm trying to run a custom built PWM controller for a small DC fan and the fans I've purchased dont seem to like anything that 100% duty cycle. I'm thinking it has to do with...