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What's the best way to make a warm metal plate?

  1. May 14, 2010 #1
    As the title says (and yes, I know it sounds a bit weird), what's the best way to make a warmable metal plate (70*45 cm big), using electrical warming? I've been thinking about using induction heating to make the plate warm, but I don't know the best way to do it. It should be battery driven and also have a switch, but that's basically the only components that I want the plate to have. So what's the best way to make it? And also, I would appreciate a simple circuit diagram.
     
  2. jcsd
  3. May 14, 2010 #2

    mgb_phys

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    A bunch of resistors bolted to the back of the plate, or you can buy adhesive warming pads that have a resistor spread through them.

    Depends on how much power and who hot you need it to get - if you are running from a battery you aren't going to be able to heat it very much.
     
  4. May 14, 2010 #3
    Ok, thanks for the tip.
     
  5. May 14, 2010 #4

    mgb_phys

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    How hot do you need and how much power - ie is the plate insulated or does it have cold water pouring over it?
     
  6. May 14, 2010 #5
    I'll need power enough to melt snow on it, ie not that much power I guess. The warmer the better though.
     
  7. May 14, 2010 #6

    mgb_phys

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    Best way probably tank/block heaters.
    Adhesive pads about 6x6 or 12x12 inches that put out about as much heat as a lightbulb. You use them to stop fuel tanks freezing or frost in greenhouses.

    Something like this (http://www.kennedydiesel.com/detail.cfm?ID=372) you can also get smaller ones that run off a car battery.
     
  8. May 14, 2010 #7
    Alright, I'll try that, thanks again for the help. :)
     
  9. May 14, 2010 #8
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