[PSUBS-MAILIST] Fwd: transducer

[Rick Patton via Personal_Submersibles]

Hank,

My brother in law used to work for a company that designed this kind of
stuff so I sent your post to him and this is his response. Hope it helps.

Rick
---------- Forwarded message ----------
From: Wally Schneider <wally at designenginuity.com>
Date: Mon, May 14, 2018 at 4:02 AM
Subject: RE: [PSUBS-MAILIST] transducer
To: Rick Patton <satwelder at gmail.com>


Hi Rick,



If it’s a straight-up piezo transducer (no matching network) and Hank has
access to some basic lab gear, the resonant frequency can be measured using
the method in the link below.

https://www.americanpiezo.com/knowledge-center/piezo-theory/
determining-resonance-frequency.html.   Probably the best results would be
with the transducer in air.



If he doesn’t have the gear/expertise, his local college physics dept may
be able to help him.





*Wally Schneider*

*Design Enginuity*

*wally at designenginuity.com <wally at designenginuity.com>*                  *(**
425.239.0265*

Electronic Design |  Schematic Capture |  Project Management  |  PCB Layout



*From:* Rick Patton <satwelder at gmail.com>
*Sent:* Sunday, May 13, 2018 10:59 AM
*To:* Wally Schneider <wally at designenginuity.com>
*Subject:* Fwd: [PSUBS-MAILIST] transducer



Hey Sir Walter,



Just got your drawings and printed them so I can take them over to the shop
and try and follow threw with your suggestions. I am forwarding this email
on to you from Hank as I am sure you would know the answer as you worked
with that company in the north end of lake Washington for a while and
that's what they did??

Rick



---------- Forwarded message ----------
From: *hank pronk via Personal_Submersibles* <personal_submersibles at psubs.
org>
Date: Sun, May 13, 2018 at 3:46 AM
Subject: [PSUBS-MAILIST] transducer
To: Personal Submersibles General Discussion <personal_submersibles at psubs.
org>

HI All,

I am looking for a 10Hz transducer for my coms.  Does anyone know how to
test a transducer to determine if it is 10Hz or 27Hz.

Hank


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