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reostats

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Hoot

Inactive Moderator
Joined
Feb 13, 2001
Location
Twin Cities
When considering the wattage of a rheostat, you must consider the voltage the fan runs at and the current it consumes at that voltage. Based upon most 120s, a 25 ohm 10W should suffice.

Hoot
 
OP
P

peewee

Member
Joined
Apr 23, 2001
Hoot (Jul 19, 2001 09:34 p.m.):
When considering the wattage of a rheostat, you must consider the voltage the fan runs at and the current it consumes at that voltage. Based upon most 120s, a 25 ohm 10W should suffice.

Hoot

i got a 25ohm 3 watt my fans say 2.7 watts..
 

Colin

Arctic Silver Senior
Joined
Dec 19, 2000
Hoot's got a great point and unlike most engineers, I think the same way. None the less, I have had good luck with the 25 ohm rheostats at the Shack and 120 mm fans. I would recommend a voltage regulator over any rheostat though. That's the "Hoot" in me comming out. The only rheostats I have installed in computers are for friends that won't pay a few extra bucks for a voltage regulator circuit.