I have notice that there seem to be a lot of EV's that are musician's . look at the lay out in my nest 4/6 musician's 3/6 teachers 2/6 electronics 2/6 computers. there are some crossovers but still this is not what I would expect . any ideas on this .(my be good to advertise in music mags) ----- Original Message ----- From: "Jon "Sheer" Pullen" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, September 11, 2002 1:09 AM Subject: Re: PWM speed controller frequency?
> > ----- Original Message ----- > From: "Joe Smalley" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Tuesday, September 10, 2002 8:55 PM > Subject: Re: PWM speed controller frequency? > > > > That is like asking a musician for his favorite note on the scale. > > > > My car sounds about middle C but it annoys an awful lot of people. > > > > If I were doing it, I would put it above 22 kHz so it only annoys the > dogs. > > 25kHz, otherwise it will annoy the dogs and the Sheers. > > The trick is to balance switching losses against noise. However, for a > scooter, it probably doesn't really matter that much. > > S. > > >
