|Re: On Nixie tubes, HP 41 CL's and hello Gerry|
Message #25 Posted by Geoff Quickfall on 1 Dec 2011, 7:10 p.m.,
in response to message #23 by Gerry Schultz
Doing the math and assuming LA has a really crappy control of there electrical system, lets assume an accuracy factor of only 98% (58.8Hz/60Hz): that is a the system runs at 98% of 60 HZ all day! Of course, the system is described at the LA web site as
"Power Quality refers to the characteristics of the power, or specifically the current and voltage, provided to the customer. The power is to be provided in clean sinusoidal waveforms at a frequency of 60Hz that does not contain sags or spikes, which allows the customerís equipment, including sensitive electronics, to operate reliably."
yikes at a whopping 30 minutes a day!
However, I would suggest from the little research I have done on the LA power grid, the system runs better then that, and that spikes probably serve to cancel drops in the 60Hz as the system does not consistently run 'off' 60Hz.
In anycase, here in Vancouver I am off a minute to two per month during the windy season in November.
LA power home site
interesting article on waveform and distortion