[time-nuts] 60 Hz power glitch, US West coast (Silicon Valley)
Jimmy Burrell
jimmydburr at gmail.com
Wed Feb 5 12:14:36 UTC 2014
Hal,
Interesting.. I'm assuming the green graph is actual voltage and the red graph is..?
I've never done any mains monitoring/measuring and was wondering, what's your equipment setup?
Thanks,
Jimmy...
N5SPE
> On Feb 4, 2014, at 8:43 PM, Hal Murray <hmurray at megapathdsl.net> wrote:
>
>
> This one caught my eye.
>
> Jan 20, 2014, Wed
> http://www.megapathdsl.net/~hmurray/time-nuts/60Hz/2014-Jan-29-a-dip.png
> I think this is the biggest dip I've seen, down below 59.8 Hz.
> That's averaged over 10 seconds.
>
> Feb 02, 2014, Sun
> http://www.megapathdsl.net/~hmurray/time-nuts/60Hz/2014-Feb-02-a-dip.png
> This one got below 59.9 Hz.
>
> I guess I should write some code to scan the archives. I wonder how many
> similar glitches I've missed.
>
> The last 50 days days:
> http://www.megapathdsl.net/~hmurray/time-nuts/60Hz/Dec-2013.png
> Peak-peak offset is 15 seconds.
>
>
> --
> These are my opinions. I hate spam.
>
>
>
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