Date:         Mon, 6 Jan 2003 23:46:37 -0600
Reply-To:     John Rodgers <j_rodgers@CHARTER.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         John Rodgers <j_rodgers@CHARTER.NET>
Subject:      Computers (no Vanagon content)
Content-Type: text/plain; charset=us-ascii; format=flowed

Sorry for taking up bandwidth here but I am hoping that some of our
Vanagon List members who are electronic whizescan help me with this.

I need to build a programmable controller that can regulate temperature
up to about 1250C or around 2250F-2500F. It needs to be triggered by a
signal from a K-coupling, and control a 75Amp 240V AC circuit. Needs
both ramp/hold and ramp rate configuration.  I would like to build this
thing with basic components - ie, IC.s, transistors, resistors, relays,
LED or liquid crystal readouts, all or most mounted on a perf board
and/or in a cabinet.

I do pottery and other clay artwork and want to control some electric
kilns used for the clay and also for silver and gold work. The factory
controllers are near $1000 each and I think that can be gotten around
handily. I think  Darrel Boehler's Digifant Digi-tool is a slick example
of what can be done with a little ingenuity and know-how. I
unfortuanately am short in both departments and thus I  solicit the
indulgence of  The Membership  for help.

Any input would be appreciated. Please respond off list via p-mail to
avoid clutter with non-vanagon content.

TIA.

John Rodgers
88 GL Driver