Re: Cheap UPS for Linux?
From: Robert E A Harvey (robertharvey_at_my-deja.com)
Date: 9 Sep 2003 13:33:00 -0700
"Shi Jin" <firstname.lastname@example.org> wrote in message news:<email@example.com>...
> Hi there,
> I am looking for a cheap UPS for my linux box. It should be able to inform
> the linux box when the power is out and let the machine shutdown itself
> We have a APC UPS in the lab and it works great. But it is for high-end
> servers and very expensive.
> I just want one for home computers but actually works with linux. Most of
> the UPS on the market have software for Win but I don't know about for
You could try thinking laterally and not having a UPS /at all/.
Have a look at:
I have used several different 24V DC in power supplies on ships. You
run the computer off the main navigation 24V DC supply, which is mains
powered with a lead-acid battery on float. Careful battery sizing,
and the addition of solar cells, could make you imune to mains
Have a look at the sort of power distribution they have for pleasure
boats. Those are mains in, DC float in the middle, and mains out.
OK, they don't have the sort of serial output you are expecting, but
they do have a relay and a synchroniser to start a diesel generator
when the battery gets below half charge....
Have a look at http://www.amtrade.com/pc_power/switching_power_supplies.htm#8
- again this is an example only. Several firms have made combined
PSU/UPS modules, quite a lot of which will go in the computer case.
If you still want a normal UPS then There are loads of small UPS's
quite cheaply - have a look at
for one of the cheapest I have seen. Unfortunately there seems to be
no linux software, which is stupid as Tripp-lite, MinuteMan and APC
all have linux software available.