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Piezo sourcing help?

Discussion in 'Electronic Basics' started by Kate Broughton, Dec 19, 2005.

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  1. Does anyone know where I could buy a handful of piezoceramic vibration
    units, of the type used in mobiles/cellphones? I can only find people
    selling them by the thousand.

    Also, does anyone know where I could find out more about these things,
    in layman's language? I'm interested to know things like how much power
    they use, whether they can be made to vibrate at different
    intensities/frequencies (by altering voltage?), what sizes they come
    in, and all sorts of basic questions. I've an idea I want to try to
    build, an am quite technically competent, but don't know the first
    thing about electronics! Any help appreciated.

    Thanks

    Kate

    PS - if you want to email me, you'll need to edit the address!
     
  2. John Fields

    John Fields Guest

    ---
    Try this:

    http://www.piezo.com/tech2intropiezotrans.html

    And then, for more, this:

    http://www.google.com/search?hl=en&lr=&q=Piezo+bender+bimorph+transducer
     
  3. Jasen Betts

    Jasen Betts Guest

    AFAIK the usey small electric motors with unbalanced weights on the shaft.
    not by much, go too low and they don't spin up, too high and they don't last
    too long.

    someone cut one up and posted the pictures in
    alt.binaries.schematics.electronics a few month back.

    Bye.
    Jasen
     
  4. Sjouke Burry

    Sjouke Burry Guest

    I have used them by the hundreds, they are just dc motors,
    the smaller 4mm thick body , and others up to 6 or 9 mm.
    Length 20-30mm.
    Attatched to the shaft is an excentric weight, and they
    run on a nominal voltage(depending on type) of 1 to 3 volt.
    We used them in a vest as 3 dimensional display on the skin
    and had an astronaut from Holland wear that in a few
    experiments in the international spacestation.(google vest tno).
    There is also a pancake model,(thin 2-3mm disk 10-12mm diameter)
    either as a stepper motor, or a dc motor. They left onethird
    of the rotor inside open,so no other excentric weight is
    needed.
     
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