[time-nuts] Blackout in Europe and power line frequency jump

Poul-Henning Kamp phk at phk.freebsd.dk
Thu Nov 9 07:33:39 EST 2006


In message <20061109082357.00599BDFC at ip-64-139-1-69.sjc.megapath.net>, Hal Murr
ay writes:

>I occasionally day-dream of setting up something so I can monitor the line 
>voltage, frequency, current, whatever... but I've never gotten off the ground.

apart from decent resolution on frequency, the spanish company Circutor
makes power meters with RS-485 comms.  They're about 300-400 USD in
single quantity.


-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.



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