From: "Spehro Pefhany"
Subject: Re: Need help with temp-control design!
User-Agent: tin/pre-1.4-19990216 ("Styrofoam") (UNIX) (Linux/2.2.14 (i586))
Date: Wed, 04 Sep 2002 02:10:06 GMT
NNTP-Posting-Date: Tue, 03 Sep 2002 22:10:06 EDT
In sci.electronics.design Basher wrote:
> Now, this is what I need help with... I want to add an 'overheat
> protection' system, so in case I leave my fan system off, and the
> computer gets too hot, it'll turn all the fans on high (12v) to prevent
> system damage. This system needs to be user-adjustable (a 10-turn
> potentiometer would do, right?)
Overkill, but you guys like overkill, right? A single turn screwdriver
adjust 3/8" trimot pot covering a 20'C span would be as good, you don't
need 0.1'C resolution.
> Anyone know parts I need, or maybe can toss me a rough schematic like
> '12vdc > thermistor > etc...'. Remember, this has to be able to handle
> enough power for -SEVEN- high-speed (>120cfm in most cases) fans as
> Much MUCH thanks in advance! Once I finish drawing out the schematics on
> my computer (graph paper is my medium of choice for such) I'll post them
> if nobody minds. Share the wealth, you know... And I could probably use
> a little proofreading, anyway. :)
Don't post it here, go to alt.binaries.schematics.electronic, post it
there and post a notice or a pointer to back there in sed. Binaries are
not allowed in this group, and many people will never see it if you try
(they get stripped automatically).
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