piezo tranducer

K

Kirst and Pete

Guest
<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
Hi
<br>I bought a piezo transducer from DSE, and on the pack it had 4.5kHz
30V p-p max.
<p>What happens if I put more than this in. How do they burn out and do
they get hot.
<br>Also is audio voulme out relative or proportional to the voltage in
?
<p>I want to make one of these really loud and using a speaker in the application
is not an option.
<p>Cheers
<p>Pete
<br>&amp;nbsp;&lt;/html&gt;
 
Kirst and Pete wrote:
I bought a piezo transducer from DSE, and on the pack it had 4.5kHz 30V
p-p max. What happens if I put more than this in. How do they burn out
Click to expand...
The piezo-ceramic material depolarises and the piezo effect disappears,
so you can pump any voltage you like into your nice little capacitor
without getting much (or any) sound. If you want *loud*, buy a driver
designed for it, perhaps using a piezo crystal instead of p-ceramic.
You can drive a crystal until it cracks.
 
Pete,

I can't deliver a response to your private email, smartchat
claims "user unknown".

Anyhow, look for a fish-finder sonar transducer... they have the
power handling you need and will be (salt-) waterproof to boot.
They won't resonate at the right freq, but should work.
Pay close attention to your drive current, piezos are capacitive.

Clifford.
 
Pete,

I don't know what you are trying to do, but if a marine sonar
transducer is what you want, I may just have what you need.

Drop me a line at daveg50_8(at)hotmail.com if interested.

Dave


On Mon, 17 Nov 2003 16:47:32 +1100, Clifford Heath
&lt;cjh_nospam@managesoft.com&gt; wrote:

Pete,

I can't deliver a response to your private email, smartchat
claims "user unknown".

Anyhow, look for a fish-finder sonar transducer... they have the
power handling you need and will be (salt-) waterproof to boot.
They won't resonate at the right freq, but should work.
Pay close attention to your drive current, piezos are capacitive.

Clifford.
Click to expand...
 
You must log in or register to reply here.

Welcome to EDABoard.com

Sponsor

Back
Top