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Dumb thermistor question

Discussion in 'Electronic Design' started by R.Lewis, Jul 15, 2003.

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  1. R.Lewis

    R.Lewis Guest

    I have a NTC thermistor with a nominal resistance of 100R at 25 degC and a
    beta value of 3600.
    How do I calculate its resistance at 80 degC (or any other temperature) from
    this?

    Thanks in anticipation
     
  2. cpemma

    cpemma Guest

    R @ T = R @ 25 * e^(B/(T + 273) - B/(25 + 273))

    where T is Centigrade

    so R @ 80 = 100 * e^(3600/353 - 3600/298)

    (e = 2.7183)
     
  3. Jim Thompson

    Jim Thompson Guest

    IIRC, it's:

    R = Ro*exp(Beta*(1/T-1/To)) T in °K

    ...Jim Thompson
     
  4. Siol

    Siol Guest

    Homework?

    :)

    Siol
     
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