Possible to use a Ultrasonic Transducer from 3v?

Discussion in 'The Projects Forum' started by solexious, Mar 7, 2011.

  1. solexious

    Thread Starter Active Member

    Nov 20, 2007
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  2. Kermit2

    AAC Fanatic!

    Feb 5, 2010
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    It requires an AC voltage of 20 volt or less.

    Says so right on the data sheet.

    So NO, it cannot be used with a 3 v DC supply
     
  3. solexious

    Thread Starter Active Member

    Nov 20, 2007
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    Sorry, I didn't mean 3v directly, but you are able to get these modules with supporting circuits that are powered from 5v, was wondering if it was possible to construct one that runs on 3v

    sol
     
  4. Kermit2

    AAC Fanatic!

    Feb 5, 2010
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    You need a source of AC voltage for this transducer. Best if you look a little longer for a device you can use directly with your power supply.

    3.3 volts is a new modern standard voltage for many IC packages, so it should be possible to find such a support circuit. Be Aware. These IC's will most likely NOT BE dual inline packages; they will be surface mount packages and will be very small.
     
  5. Bernard

    AAC Fanatic!

    Aug 7, 2008
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    A National LM 4951 amp will operate on 2.7V to 9V. @ 3.3V output is 280 mW-should be enough to drive US tranducer via step-up transformer. Max frequency not specified, but no rollover noted at 20 kHz. Use RC phase shift to make 40 kHz oscillator.
     
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