[Tfug] UPS sizing

[Tom Rini]

On Wed, Dec 31, 2008 at 11:13:18PM -0700, johngalt1 wrote:
>
> ----- Original Message ----- From: "Bexley Hall" <>
> To: "Tucson Free Unix Group" <tfug at tfug.org>
> Sent: Wednesday, December 31, 2008 10:52 AM
> Subject: Re: 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...

Presumably out of my pricerange right now, but are any of these devices
cheap ?  Or do they just wire things up?

-- 
Tom Rini