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<div>Hi Rick,</div><div>Thank you for that, I will see how my test goes Wednesday before I start getting serious. Turns out with headphones, it is a lot louder. Wish me luck</div><div>Hank</div><div><br></div>
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On Monday, May 14, 2018, 11:04:13 AM MDT, Rick Patton via Personal_Submersibles <personal_submersibles@psubs.org> wrote:
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<div><div id="yiv4711205510"><div dir="ltr">Hank,<div><br></div><div>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.</div><div><br></div><div>Rick<br><div class="yiv4711205510gmail_quote">---------- Forwarded message ----------<br>From: <b class="yiv4711205510gmail_sendername">Wally Schneider</b> <span dir="ltr"><<a rel="nofollow" ymailto="mailto:wally@designenginuity.com" target="_blank" href="mailto:wally@designenginuity.com">wally@designenginuity.com</a>></span><br>Date: Mon, May 14, 2018 at 4:02 AM<br>Subject: RE: [PSUBS-MAILIST] transducer<br>To: Rick Patton <<a rel="nofollow" ymailto="mailto:satwelder@gmail.com" target="_blank" href="mailto:satwelder@gmail.com">satwelder@gmail.com</a>><br><br><br><div lang="EN-US"><div class="yiv4711205510m_-7348816731435350215WordSection1"><p class="yiv4711205510MsoNormal"><span>Hi Rick,<u></u><u></u></span></p><p class="yiv4711205510MsoNormal"><span><u></u> <u></u></span></p><p class="yiv4711205510MsoNormal"><span>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.<u></u><u></u></span></p><p class="yiv4711205510MsoNormal"><span><a rel="nofollow" target="_blank" href="https://www.americanpiezo.com/knowledge-center/piezo-theory/determining-resonance-frequency.html">https://www.americanpiezo.com/ knowledge-center/piezo-theory/ determining-resonance- frequency.html</a>. <span> </span><span> </span>Probably the best results would be with the transducer in air.<u></u><u></u></span></p><p class="yiv4711205510MsoNormal"><span><u></u> <u></u></span></p><p class="yiv4711205510MsoNormal"><span>If he doesn’t have the gear/expertise, his local college physics dept may be able to help him.<u></u><u></u></span></p><p class="yiv4711205510MsoNormal"><span><u></u> <u></u></span></p><p class="yiv4711205510MsoNormal"><span><u></u> <u></u></span></p><p class="yiv4711205510MsoNormal"><b><span style="font-size:9.0pt;font-family:sans-serif;color:#7f7f7f;">Wally Schneider<u></u><u></u></span></b></p><p class="yiv4711205510MsoNormal"><b><span style="font-size:9.0pt;font-family:sans-serif;color:#7f7f7f;">Design Enginuity<u></u><u></u></span></b></p><p class="yiv4711205510MsoNormal"><u><span style="font-size:9.0pt;font-family:sans-serif;color:#0070c0;"><a rel="nofollow" ymailto="mailto:wally@designenginuity.com" target="_blank" href="mailto:wally@designenginuity.com">wally@designenginuity.com</a></span></u><u><span style="font-size:9.0pt;font-family:sans-serif;color:#7f7f7f;"> </span></u><u><span style="font-size:8.0pt;font-family:Wingdings;color:gray;">(</span></u><u><span style="font-size:9.0pt;font-family:sans-serif;color:#7f7f7f;"> 425.239.0265<u></u><u></u></span></u></p><p class="yiv4711205510MsoNormal"><span style="font-size:9.0pt;font-family:sans-serif;color:#7f7f7f;">Electronic Design | Schematic Capture | Project Management | PCB Layout<u></u><u></u></span></p><p class="yiv4711205510MsoNormal"><span><u></u> <u></u></span></p><p class="yiv4711205510MsoNormal" style="margin-left:.5in;"><b><span>From:</span></b><span> Rick Patton <<a rel="nofollow" ymailto="mailto:satwelder@gmail.com" target="_blank" href="mailto:satwelder@gmail.com">satwelder@gmail.com</a>> <br><b>Sent:</b> Sunday, May 13, 2018 10:59 AM<br><b>To:</b> Wally Schneider <<a rel="nofollow" ymailto="mailto:wally@designenginuity.com" target="_blank" href="mailto:wally@designenginuity.com">wally@designenginuity.com</a>><br><b>Subject:</b> Fwd: [PSUBS-MAILIST] transducer<u></u><u></u></span></p><p class="yiv4711205510MsoNormal" style="margin-left:.5in;"><u></u> <u></u></p><div><p class="yiv4711205510MsoNormal" style="margin-left:.5in;">Hey Sir Walter,<u></u><u></u></p><div><p class="yiv4711205510MsoNormal" style="margin-left:.5in;"><u></u> <u></u></p></div><div><p class="yiv4711205510MsoNormal" style="margin-left:.5in;">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?? <u></u><u></u></p></div><div><p class="yiv4711205510MsoNormal" style="margin-left:.5in;">Rick <u></u><u></u></p></div><div><p class="yiv4711205510MsoNormal" style="margin-left:.5in;"><u></u> <u></u></p><div><p class="yiv4711205510MsoNormal" style="margin-right:0in;margin-bottom:12.0pt;margin-left:.5in;">---------- Forwarded message ----------<br>From: <b>hank pronk via Personal_Submersibles</b> <<a rel="nofollow" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs. org</a>><br>Date: Sun, May 13, 2018 at 3:46 AM<br>Subject: [PSUBS-MAILIST] transducer<br>To: Personal Submersibles General Discussion <<a rel="nofollow" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs. org</a>><br><u></u><br><u></u><u></u><u></u></p><div><div><div><p class="yiv4711205510MsoNormal" style="margin-left:.5in;"><span style="font-size:10.0pt;font-family:sans-serif;">HI All,<u></u><u></u></span></p></div><div><p class="yiv4711205510MsoNormal" style="margin-left:.5in;"><span style="font-size:10.0pt;font-family:sans-serif;">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.<u></u><u></u></span></p></div><div><p class="yiv4711205510MsoNormal" style="margin-left:.5in;"><span style="font-size:10.0pt;font-family:sans-serif;color:#888888;">Hank<u></u><u></u></span></p></div></div></div><p class="yiv4711205510MsoNormal" style="margin-right:0in;margin-bottom:12.0pt;margin-left:.5in;"><br>______________________________ _________________<br>Personal_Submersibles mailing list<br><a rel="nofollow" ymailto="mailto:Personal_Submersibles@psubs.org" target="_blank" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs. org</a><br><a rel="nofollow" target="_blank" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/ listinfo.cgi/personal_ submersibles</a><u></u><u></u></p></div><p class="yiv4711205510MsoNormal" style="margin-left:.5in;"><u></u> <u></u></p></div></div></div></div></div><br></div></div></div>_______________________________________________<br>Personal_Submersibles mailing list<br><a ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br></div>
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