[c-nsp] Inline Fan Controllers?

chris tknchris at gmail.com
Wed Dec 17 12:54:20 EST 2014

I had 2 of the same exact fan controllers both do the same thing so I'm
counting out that both are defective but guessing that most likely theres
something they arent doing right. The controllers I have say they control
any 12V fan, and the fan on the 2950g im playing with says its 12V 0.46A so
i think it "should" work. You don't happen to remember a model or part # of
one you used that worked?


On Wed, Dec 17, 2014 at 12:35 PM, Steve Mikulasik <Steve.Mikulasik at civeo.com
> wrote:
> I have used those before, it should decrease the voltage, forcing the fan
> spin slower. It should work in theory on any device using a 3pin connector.
> Possibly a defective or junky fan controller. You could put a volt meter on
> the end of it to see if turning the knob has any affect.
> Stephen
> -----Original Message-----
> From: cisco-nsp [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of
> chris
> Sent: Wednesday, December 17, 2014 10:02 AM
> To: cisco-nsp at pu ck.nether.net
> Subject: [c-nsp] Inline Fan Controllers?
> Hello,
> Has anyone on the list ever messed putting in a fan controller in a switch
> so its inline between the motherboard and fan? I had one of these (
> http://www.quietpc.com/images/products/gel-fan-controller.jpg ) laying
> around and plugged into a spare 2950g and 3560g I have kicking around and
> the fan powers up and the fan works like normal and turning the knob has no
> effect. I thought it would be like a standard 3 wire computer fan and that
> this would be easy way to lower rpm on a stock fan with replacing the fan.
> This is only to minimize noise when labbing, we arent lookinng to do this
> to any production equipment. Anyone ever tried anything like this and had
> any success? I was hoping it would work because the controllers are only a
> few dollars and it would be cheaper and more flexible as we could move the
> controllers around from box to box as needed
> If you have any experience with anything that worked, I would be
> interested to hear about it
> chris
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