Re: And what about frequency...
Some devices use the line frequency as a freely-provided clock tick - which is a horrible idea. Not sure if that's what happened here, but still...
It is a pretty smart idea, provided the frequency remains within the (pretty tight) margins. Interesting things start happening if the frequency strays outside of those margins. A couple of years ago the frequency dropped a bit in all of continental Europe due to one country not supplying the contracted power. Clocks were a couple of minutes slow after several months of this.
Biting the hand that feeds IT
