On Thu, Oct 27, 2011 at 11:47:07AM -0400, Monty Montgomery wrote: > >> At least in NA, mains frequency is very very stable. The entire > >> continent is in phase and clocked with very high precision. It's more > >> stable than a free-running digital clock. > > > > Yes, the long-term stability will be very good, as the frequency is > > adjusted to keep clocks in sync. But there are small short-term > > variations all the time which you won't notice on a clock, but can > > be measured easily. > > Really? Any supply that's out of phase will instantly face the wrath > of the collective rest of the system. "boom". The whole continent > would have to be moved simultaneously. More or less, yes. But since the grid is not a zero-impedance connection of everyone to everyone, phase errors (and therefore small temporary frequency errors) can exists between distant areas on the same grid. See for example <http://fnetpublic.utk.edu/anglecontour.html> Ciao, -- FA _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
