Reply-To: "fred bartoli"
From: "fred bartoli"
Subject: Re: 12V computer fans run from 27 to 38V, speeding up at high temperature
Date: Tue, 22 Oct 2002 10:27:09 +0200
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NNTP-Posting-Date: 22 Oct 2002 10:25:19 MEST
Winfield Hill a écrit dans le message :
> email@example.com wrote...
> >-Thinking kindly on the hungry masses here at s.e.d., here's a bone
> > for yo'all to knaw on. I'd like to run various generic 12V computer
> > heat-sink fans from a 27 to 38V supply, using a PWM buck regulator.
> > The fan should run slowly at room temp, but increase to full speed
> > by ~ 40C heat-sink temperature. Full speed would be 12V fan drive,
> > which shouldn't be exceeded even if the temperature rises over 40C.
> > I have faith that s.e.d. engineers can find a good solution, while
> > I sleep peacefully, awaiting the results of your feverish efforts.
> Pardon the patronizing, insolent tone of the above posting, but
> 171 messages on the subject, "How does a mixer work?" Sheesh,
> all you fellows need something to get your teeth into!
> - Win
if you had the time to count all the 171 messages one after another, then
you sure had time to design your magnificient high-efficiency-low-noise
gadget and share it with us !