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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>By the ESC. If they were produced by the current through the motor they wouldn’t be produced when the prop wasn’t turning, and would be produced anytime the motor was running.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><i><span style='font-size:13.5pt;font-family:"Brush Script MT";color:#1F497D'>Jay Marshall</span></i></b><span style='color:#1F497D'> </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal style='margin-left:.5in'><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> nsrca-discussion-bounces@lists.nsrca.org [mailto:nsrca-discussion-bounces@lists.nsrca.org] <b>On Behalf Of </b>George Kennie<br><b>Sent:</b> Sunday, October 09, 2011 1:04 PM<br><b>To:</b> General pattern discussion<br><b>Subject:</b> [NSRCA-discussion] beep tones<o:p></o:p></span></p></div><p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p><div><p class=MsoNormal style='margin-left:.5in'>I have a question that came up at ther flying field yesterday.<o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'>The query was: What produces the arming tone and the cell count tones that are <o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'>audible when the battery is plugged in to an electric motor powered model?<o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'> <o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'>There were guys that were adament that the tones were produced by the current<o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'>surging through the motor.<o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'> <o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'>There was confusion due to the fact that no visible speaker could be observed.<o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'> <o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'>I felt that there had to be nano oscillator circuits in the esc working some kind of a<o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'>nano piezo circuit generating the required tones, but I really had no idea.<o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'> <o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'>Can somebody please clear up the confusion, ? anybody,? Peter???<o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'> <o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'>Thanks <o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'> <o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'>Georgie <o:p></o:p></p></div></div></body></html>