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Rheostat heatsink question

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Novex

Registered
Joined
Jan 10, 2002
Location
Syracuse, New York
Pcmods.com and Caseetc.com both have Rheostat fanbuses for sale. On both of them there are heatsinks on each rheostat. Do you need these? Could I buy the rheostat kit at sidewindercomputers.com and install them without a heatsink and not have them overheat?
 

Hoot

Inactive Moderator
Joined
Feb 13, 2001
Location
Twin Cities
If a rheostat needs a heatsink on it to perform then you are using the wrong wattage rheostat for the job. Are you sure you were not looking at a semiconductor voltage regulator device? Quite often, they have a heatsink on them to dissipate waste heat. Real rheostats (variable power resistors) can tolerate running warm to hot. They are designed for it. That is why they are made out of ceramic. This is what a real rheostat looks like:

Hoot
 

donny_paycheck

Inactive Super Quad Mod
Joined
Oct 25, 2001
Yes, that is a variable voltage regulator circuit. The heatsinks are mounted on the voltage regulator ICs themselves.