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From: richard@bison.DEC (MIKE RICHARD CX01-2/M26 DTN 522-2256)
Newsgroups: net.analog
Subject: Posting
Message-ID: <3556@decwrl.UUCP>
Date: Sat, 10-Aug-85 14:31:41 EDT
Article-I.D.: decwrl.3556
Posted: Sat Aug 10 14:31:41 1985
Date-Received: Mon, 12-Aug-85 22:50:49 EDT
Sender: daemon@decwrl.UUCP
Organization: Digital Equipment Corporation
Lines: 14

I am trying to build a temperature controller for a heating element which
will keep the temperature of the element within around 5 deg. F.  by varying
the voltage into the element.   At present I plan to use a switching power
supply and an adjustable regulator.  So far, that is about the extent of
my plans.  I would like to be able to use an analog feedback network, but
I don't know much about analog control systems design.  Most of my experience 
is in digital design.   If anyone in net.analog has any suggestions, they 
would be most appreciated.  I would especially be interested in inexpensive
ic's that might do what I want.  The heating element, by the way, is less
than .5 ohm and has to consume 1200 - 2000 watts.  Please send replies to
me personally, so as not to clutter the network.  Thanks.

/Mike Richard