![]() If you are using this mod on your CPU fan then use the 20 ohm rheostat to prevent fan stall at the slowest speed setting. The rheostat should be rated at least 3 Watt, (for fans up to 10Watt), and have a resistance of 20 – 50 Ohms. ![]() ![]() Here is a simple mod to allow the speed of any 12V fan to be varied.Īll we need to do is insert a rheostat or variable resistor in the 12V wire to the fan. ![]()
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