[Tfug] UPS sizing

[johngalt1]

----- Original Message ----- 
From: "Bexley Hall" <>
To: "Tucson Free Unix Group" <tfug at tfug.org>
Sent: Wednesday, December 31, 2008 10:52 AM
Subject: Re: [Tfug] UPS sizing


> Hi, Tom,
>
>> On Wed, Dec 31, 2008 at 09:16:59AM -0800, Bexley Hall
>> wrote:
>>
>> > Rather, it seems like I'm better served by a small
>> > UPS at each machine that is just big enough to
>> > provide an orderly shutdown (saving work in progress)
>> > in the event of a power outage (and, to tide me over
>> > in those occasional dropouts).
>> >
>> > Does this seem in line with what others have done?
>>
>> That's what I do right now.  Although I'm half
>> wanting a second UPS for
>> cable modem / access point / vonage box so the laptops
>> can
>> go on for a while, if it's more than a quick blip.
>
> Since all of these "appliances" are "wall-wart" powered,
> I just rigged up a battery to feed them -- using a
> modified
> wall-wart to then keep the battery charged.  I figure it
> is
> more efficient than an inverter feeding a bunch of wall
> warts.

That's how professional comm / network shacks do it. Routers
/ switches / radios etc are DC powered - No inverter to
fail...