I have scoured the internet looking for a supplier of PCB-mounting
16KHz ultrasonic transmitters that will operate at 10-12VDC.Most seem to be 40KHz and/or require 20V plus.
Can anyone recommend a definite part source? Given the desired specs, would I be better off using a small piezo tweeter?
Jim Porter
On a sunny day (Fri, 20 Apr 2012 20:35:26 +1000) it happened Jim Porter wrote in :
Any piezo tweeter will do that.
10V ACMost seem to be 40KHz and/or require 20V plus.
You are aware, I presume, that human hearing range is from 20 Hz to 20 kHz, which decidedly makes a mere 16 kHz NOT qualify as "Ultrasonic"?
And the kilo prefix is always NOT capitalized.
What happened to you? Bad experience with your sunday school teacher?
As I suspected. But I was hoping for PCB mount size, either bare piezo disk or encased.
Can anyone advise a part source? Large manufacturer?
The outlets like Element and RS do not offer enough choice.
Again: 16KHz 10-12V drive.
Jim Porter
ISTR there are 15kHz transducers for ultrasonic welding. I doubt if they will be very loud on 10v drive though.
Is the intention to annoy teenagers?
-- Regards, Martin Brown
"Jim Porter"
** You planning to annoy the crap out of the local canine population ???Woof, woof .....
** Well 40kHz * IS * ultra-sonic after all. ** Just use the driver from a small piezo horn - often they can be easily detached.Long as your circuit can drive a few volts at 16kHz into a load of about
100nF you are sweet.BTW: Beware of Conan the Grammarian ....
... Phil
Seriously, and I thought it was hard to find a bigger ass than Allison or Thompson.
If they run on that low a voltage, perhaps they're magnetic bleepers rather than piezo things.
16kHz isn't ultrasonic of course.NT
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