keeta Posted January 14, 2004 Report Share Posted January 14, 2004 I am trying to build a temerature controller to control 240VAC at 10-20 amps. It should control using proportional current to a resistive heater element to maintain a temperature (set between 50 and 300 degrees celsius). Please Help! :-[ Quote Link to comment Share on other sites More sharing options...
MP Posted January 20, 2004 Report Share Posted January 20, 2004 I think we need more information. You know a continuous 240 VAC at 20 amps is 4.8 Kilowatts don't you? You could burn down your house with this much power dissipation. Be careful.MP Quote Link to comment Share on other sites More sharing options...
keeta Posted January 21, 2004 Author Report Share Posted January 21, 2004 Thanks for the consideration. The power consumption was a high estimate. The load will be an oven element in a steel thermally insulated oven. If i can get a circuit for the controller i will use it for most projects that are a much lower power loading, eg 2.4KW.Thanks for your reply.Cheers. Quote Link to comment Share on other sites More sharing options...
hotwaterwizard Posted January 22, 2004 Report Share Posted January 22, 2004 I have a circuit that may help but I don't know if it can be posted. I got it out of the Encyclopedia of Electronic Circuits Volume 3 page 626. Quote Link to comment Share on other sites More sharing options...
hotwaterwizard Posted January 22, 2004 Report Share Posted January 22, 2004 Here is a PDF of a temperature controller data sheet.http://www.ee.washington.edu/stores/DataSheets/linear/lm3911.pdf Quote Link to comment Share on other sites More sharing options...
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