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HaM (Jul 19, 2001 12:26 a.m.):
A rheostat is a small device that can be used to control the speed of a fan in your computer. Sometimes when i fan is hooked to a readiator for water-cooling, people hook it up to a rheostat to turn the fan's speed down because it is quieter, yet produces the same temps. So its basically a fan speed controller.
I think i got that right...
Hoot (Jul 19, 2001 07:53 a.m.):
Well, almost Matt ;D
If you reduce the voltage to a DC fan, chances are good that you will reduce the speed of the motor.
If you reduce the speed, chances are good that you will reduce the airflow.
If you reduce the airflow, chances are good that it will not cool as well.