Poul,
I wouldn't know the difference between a high-quality professional power line
monitor and an also-ran. Could you point me to a couple on ebay?
Bob
-----------------------------------------------------------------------------------
GFS GPSDO list:
groups.yahoo.com/neo/groups/GFS-GPSDOs/info
From: Poul-Henning Kamp <p...@phk.freebsd.dk>
To: Discussion of precise time and frequency measurement <time-nuts@febo.com>;
Hal Murray <hmur...@megapathdsl.net>
Cc: Bob Stewart <b...@evoria.net>
Sent: Friday, July 8, 2016 1:52 AM
Subject: Re: [time-nuts] The home time-lab
--------
In message <20160708041855.562d7406...@ip-64-139-1-69.sjc.megapath.net>, Hal Mu
rray writes:
>b...@evoria.net said:
>> So, since I need to power the 5370 (preferably both)
I've been staring at the 5370 PSU many times, it is a horribly inefficient
design.
The 5V rails are regulated down from 10V, the 15V rails down from
20V, so somewhere between 25% and 50% of the power becomes heat in
the series transistors.
A new A6 with four high quality DC/DC converters and some extra
filtering would be a really big improvement both heat and efficiency
wise.
It would be trivial to make such a design able to run from a 24V
Battery supply input as well
I havn't tried to measure the power-drain on the four regulated
rails, but from the short-circuit resistors it looks like less
than two amps on +/-15V and less than 10 amp on +/-5V ones.
>Yes, you can build your own UPS. It would be interesting to see what the
>parts cost totals out to.
Taking the detour around mains is a bad idea, everybody who can are
moving away from it.
>What did you have in mind for a power line monitor?
Plenty of high quality professional ones on eBay
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@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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