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Questions about a Piezo igniter

  1. Nov 6, 2011 #1
    Questions about a Piezo igniter......

    About how many times can one strike a piezo igniter before it wears out, or before it's electrical output is severely reduced?
     
  2. jcsd
  3. Nov 7, 2011 #2

    davenn

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    Re: Questions about a Piezo igniter......

    hi there

    if the constant deformation of the quartz crystal as its struck doesnt physically damage the crystal ... ie crack/shatter it, then I have no reason to believe that it would ever fail to produce a spark.
    it is interesting to note tho (wiki...) that piezo igniters become unreliable at altitude...significantly so at >8000ft.

    here's a page where a guy set up a test jig to test a piezo igniter. firing it 25 times a minute, at 111,000 strikes it was the mechanics that gave up, not the quartz crystal!!!!
    http://www.gswagner.com/piezo/piezo.html

    cheers
    Dave
     
  4. Nov 9, 2011 #3
    Re: Questions about a Piezo igniter......

    Also, does a piezo lighter/igniter have a distinct 'positive' and 'negative' terminals, or does it create and rapid 'alternating current' (a strong negative voltage followed by an equally strong positive voltage)?
     
  5. Nov 9, 2011 #4

    davenn

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    Re: Questions about a Piezo igniter......

    I cant answer that, maybe one of the guru's can. I havent personally seen anything in print.

    Dave
     
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