[NSRCA-discussion] beep tones

[Scott Pavlock]

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
>
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