[time-nuts] Thunderbolt - any negatives ?

Poul-Henning Kamp phk at phk.freebsd.dk
Mon Jun 1 13:10:26 EDT 2009


In message <8ee95ff95a0d554a4605bc824e604fcc.squirrel at petelancashire.com>, "Pet
e Lancashire" writes:
>Anyone running with a power supply with built in UPS ?
>
>A long time ago (>15yrs) I did project that for a supply did
>a/c line -> battery -> +5/+12/-12. A side advantage was great
>isolation.

mini-box.com has a small "12V UPS" board, havn't tried it, but a friend
did and it works fine.

I've run my timing stuff off a "battery-backed power-supply" normally
used for firealarms.

-- 
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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