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Ultrasonic transducers/tweeters

S

Salmon Egg

Jan 1, 1970
0
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
 
E

Eeyore

Jan 1, 1970
0
Salmon said:
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.

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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