On Jun 25, 7:36*am, Steve Walker wrote:
...
...I doubt if any machine motors will notice the
difference. The same with almost all digital clocks, which use a crystal
to set the frequency, not the grid. Maybe your grandfather's Westclox
electric alarm, with the motor, but even most of them were/are self
correcting, each time you adjust the time, they get a little bit more
accurate.
Steve Walker

I have a Westclox LED digital alarm clock that runs twice as fast when
I'm on the generator. The generator regulates within about 5 Hz so
maybe it double-triggers on noise at the zero crossings. It doesn't
like inverter AC either.

I depend on 'atomic' battery clocks to set the off-line computer for
TV recording. As long as the government doesn't mess with atoms I
should be OK.

jsw