[time-nuts] Portable standard
Poul-Henning Kamp
phk at phk.freebsd.dk
Wed Apr 6 07:26:11 UTC 2011
In message <BANLkTi=We=7+_yiK4S1yhqAt7ZWU5GA6RA at mail.gmail.com>, Joseph Gray wr
ites:
>Some charge circuits use pulsing current for SLA
>batteries. Would this affect the OCXO?
The only place where charge pulsing has shown an effect is where
you have long strings of batteries (10+) where the pulses help
equalize the charge by overcharging all the batteries, at a heavy
cost in battery lifetime. A much better solution is electronic
charge equalizers which does the same job without the cost of
battery lifetime.
A simple float-charger will do just fine for what you are trying
to do.
>Obviously too much air flow will be a problem.
Don't underestimate the thermal mass of the SLA batterieies, if
you put them inside the insulation, you will have a much more
stable temperature.
--
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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