[NSRCA-discussion] beep tones

[Lightfoot]

You may be right. Time for some experiments.

1)      Different size motors - same ESC

2)      No motor at all

3)      Same motor - different ESCs

4)      And most likely to succeed - write the mfgs.

 

Jay Marshall 

From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Scott Pavlock
Sent: Sunday, October 09, 2011 2:03 PM
To: General pattern discussion
Subject: Re: [NSRCA-discussion] beep tones

 

Yes it is in fact pulsing current through the motor. An electric motor is
very similar to a speaker, and vibrating the windings at specific
frequencies will create different musical tones.

On Oct 9, 2011 1:04 PM, "George Kennie" <geobet4evr at gmail.com> wrote:

I have a question that came up at ther flying field yesterday.

The query was: What produces the arming tone and the cell count tones that
are 

audible when the battery is plugged in to an electric motor powered model?

 

There were guys that were adament that the tones were produced by the
current

surging through the motor.

 

There was confusion due to the fact that no visible speaker could be
observed.

 

I felt that there had to be nano oscillator circuits in the esc working some
kind of a

nano piezo circuit generating the required tones, but I really had no idea.

 

Can somebody please clear up the confusion, ? anybody,? Peter???

 

Thanks 

 

Georgie  


_______________________________________________
NSRCA-discussion mailing list
NSRCA-discussion at lists.nsrca.org
http://lists.nsrca.org/mailman/listinfo/nsrca-discussion

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.nsrca.org/pipermail/nsrca-discussion/attachments/20111009/ef21fdcf/attachment.html>