kell wrote:
> Major Misunderstanding wrote:
> > A lady just contacted me and says she can hear her Nokia phone charging -
> > like a pulsing sound. Nobody else can hear it but when it is switched on she
> > registers the sound from some 2-3 metres away. When it is charged the sound
> > stops. I also know of another person who can hear similar sounds from
> > electrical equipment. Could this be a low frequency sound or is it something
> > odd happening...? With the charger on it's own she doesn't hear anything.
> >
>

It may be the charger, my daughter can hear the car charger in my car,
it uses a switching supply up around 19 kHz or something, she can hear
it, I can't. It a HIGH frequency sound.

Mark