[Soekris] voltage questions

[Nicolas Boulay]

I have plug the soekris to 2x 12V batterie for a robot without
problems. The "complete" spec of the input voltage is given inside the
manual, it's range is extended in regards of the given power supply.

2007/2/21, Poul-Henning Kamp <phk at phk.freebsd.dk>:
> In message <45DCCC28.7040400 at tiedyenetworks.com>, Mike writes:
>
> >I have a solar site I want to convert over to 24v for effeciency
> >reasons. Soekris 4801 spec says it can only take 6v-20v - does anyone
> >know if it's possible to make it work up to say 28 or 30v without frying
> >it, or should I forget about it and stick with 12v?
>
> The battery of a 24V system will go as high as 29.4V during charging
> so you would be 47% over spec.
>
> If you only have the soekris as load, I would stick with the 12V
> system, the current is so low that the performance difference
> between a 24V and 12V is insignificant.
>
> If you have other, heavier loads, go with the 24V system and put
> a small DC/DC converter in front of the soekris.
>
> --
> 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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