Candle wavelength

Discussion in 'General Electronics Chat' started by Voltboy, Aug 23, 2007.

  1. Voltboy

    Thread Starter Active Member

    Jan 10, 2007
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    0
    Hello.
    I'm trying to do a project with a infrared phototransistor to detect a flame of a candle, not a big flame but almost every IR phototransistor's peak sensivity wavelenght is 880nm-940nm and I wanted to know if a small falme emits this wavelenght or more.

    Thanks
    -Yoda
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    If the flame is luminous, then there will be emission in the visible region, too. You might experiment with the phototranistor to see what emisstivity there is in the 880 - 940 nm range.
     
  3. Voltboy

    Thread Starter Active Member

    Jan 10, 2007
    197
    0
    i know there is normal light but ill be using a IR filter
     
  4. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    Candles are cheap - make an experiment & compare it with, say an alcohol flame.
     
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