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What should be value of PTC/ Resistance to raise its temperature to 150 deg Celsius

  1. Nov 30, 2011 #1
    What should be value of PTC/ Resistance to raise its temperature to 150 deg Celsius for 220V AC and 24V DC..
    Please explain this with required formula...
     
  2. jcsd
  3. Nov 30, 2011 #2

    f95toli

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    Re: What should be value of PTC/ Resistance to raise its temperature to 150 deg Celsi

    Impossible to answer. It depends on how quickly it losses heat.
    Remember that a resistor wil heat up only if it can't dump the dissipated energy quickly enough.
     
  4. Nov 30, 2011 #3

    berkeman

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    Staff: Mentor

    Re: What should be value of PTC/ Resistance to raise its temperature to 150 deg Celsi

    What is the context of the question? Is it for a project or for schoolwork?
     
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