Which UPS?

[Scott Allen]

On 13 June 2012 10:45, James Knott <james.knott-bJEeYj9oJeDQT0dZR+AlfA at public.gmane.org> wrote:
>> AC is fed to the PC from the mains by the UPS (usually through a
>> mechanical relay)
>
> How often does that happen?  The relay will cause a brief interruption of
> power that's sufficient to reboot computers.

Note the statement that I made in my original post, leading into the
paragraph that you're questioning:
"If the primary power that you have for your PC is 120VAC (we're
talking the typical North American home here) then an AC output UPS
isn't so stupid."

Emphasis on "we're talking the typical North American home here", thus
assuming a typical small retail UPS.

I have five of this type of UPS here at home:
- APC Personal Powercell 170W
- APC Back-UPS ES 350
- APC Back-UPS ES 500
- APC Smart-UPS 700
- Belkin 750VA

The APC Smarts-UPS provides true sine output and is more intended for
busness/industrial use.

Every one of these uses a mechanical relay to switch from line to battery.

-- 
Scott
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