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Ultrasonic transducers/tweeters

Discussion in 'Electronic Components' started by Salmon Egg, Jul 1, 2007.

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  1. Salmon Egg

    Salmon Egg Guest

    Where can I get cheap high frequency sound generators. I was thinking of
    something like the sirens in smoke alarms that I can drive at their
    fundamental frequency or at harmonics.

    Another possibility is piezoelectric film that I saw demonstrated many years
    ago.

    Bill
     
  2. Eeyore

    Eeyore Guest

    You may well be able to use piezo tweeters beyond the audible range.
    http://www.usspeaker.com/cts index-1.htm

    Some of these are specced up to 30 kHz.

    Graham
     
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