[NSRCA-discussion] beep tones

[Lightfoot]

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.

 

Jay Marshall 

From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of George Kennie
Sent: Sunday, October 09, 2011 1:04 PM
To: General pattern discussion
Subject: [NSRCA-discussion] beep tones

 

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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