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fan speed control

Started by Coolbrew, 11/21/2007 06:43PM
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Posted 11/21/2007 06:43PM Opening Post
Bruce Rodgers
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Join Date: Apr 2003

Location: Mickleton NJ, US

Posts: 5

I recently got a 12v dc power source for my dob and want to use it to run my cooling fan. I have a cigarette adapter plug to hook up to the fan. My question is: what do I use to control the speed of the fan? I want to be able to adjust it.

Thanks,

Bruce Rodgers
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Posted 11/21/2007 06:52PM #1
Floyd Blue
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Join Date: Mar 2003

Location: Bakersfield CA, US

Posts: 4913

Hi Broose,
I use a Rheostat to control the speed. 100 ohm is perfect, it will slow it down to almost a stop. A little loss from heat, but negligible.
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