You want a spherically focused transducer.  Fishfinder and rangefinder
transducers will not work.  Get a cheap ultrasonic humidifier and look
at how they focus the untrasonic energy at the water surface.  This can
be done with a cup shaped piezo element, or a cheaper way for small
quantities is to use a lens.  An epoxy lens used with water would be
thin in the middle and thick at the edges.

Sherpa Doug

> -----Original Message-----
> From: Gabriel Caffese [mailto:gabrielsdi@IMPSAT1.COM.AR]
> Sent: Sunday, July 15, 2001 9:42 PM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: [EE]: Ultrasound/Cavitation transductor for nebulizer
>
>
> Hi everyone,
>
>     I am looking for an ultrasound piezoelectric transducer,
> wich (with the help of a PIC) will be used on a nebulizer,
> using the cavitation priciple.
>    Here goes the question:
>
>      Does anynoe know about a company wich may manufacture
> this kind of transductors ??
>
>
>    Thanks to all.-
>        Gabriel.-
>
> --
> http://www.piclist.com hint: PICList Posts must start with ONE topic:
> [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads
>
>

--
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