jzamora3
Well-Known Member
I'm building a stir plate but can't seem to get the fan to spin at lower speeds.
I'm using this PWM http://www.ebay.com/itm/112306248234 and just a regular 12v pc fan with three wires. I have it wired as indicated in the item description but the fan will only spin at 99 or 100. A slight movement about 88 but no spinning. Any idea what's going on here? I'm using a 9v power supply.
I'm using this PWM http://www.ebay.com/itm/112306248234 and just a regular 12v pc fan with three wires. I have it wired as indicated in the item description but the fan will only spin at 99 or 100. A slight movement about 88 but no spinning. Any idea what's going on here? I'm using a 9v power supply.