If anyone knows of more relevant newsgroups to post this to, we'd
appreciate the info.

We're trying to find an uninterruptible power supply (~1000VA or
more) for a quiet environment (residential living room). Which
means the unit must not have any fans, buzzing noises etc while it's
operating, and above all else, must have an option to disable any
audible alarms it might have.

We've been searching for a month and haven't found anything so far.

Any help greatly appreciated,

Tom

"Tom S" wrote in news:grhNe.7204$Wi6.5234
@newsread2.news.pas.earthlink.net:

We're trying to find an uninterruptible power supply (~1000VA or
more) for a quiet environment (residential living room). Which
means the unit must not have any fans, buzzing noises etc while it's
operating, and above all else, must have an option to disable any
audible alarms it might have.

Do you mean no noise while it's on battery? If so, that's asking a lot.
Just how bad is your power that it's going to matter? I've never seen one
that's silent on battery and if one does exist it's probably going to be
extremely expensive. Low end units buzz, high end units have fans.

The ability to disbable the audible alarm should be easy to find in any
configurable UPS. Something like the APC SmartUPS or BackUPS series.
Probably not the super cheap ones you see around so much. The BackUPS RS
is available in 1000 and 1500VA models. The SmartUPS are a little better
since they have sine wave output.

Putting the UPS in a closet or something would be your best bet if it must
be silent at all times.

Doug

On Fri, 19 Aug 2005 09:15:56 GMT, Tom S wrote:
If anyone knows of more relevant newsgroups to post this to, we'd
appreciate the info.

We're trying to find an uninterruptible power supply (~1000VA or
more) for a quiet environment (residential living room). Which
means the unit must not have any fans, buzzing noises etc while it's
operating, and above all else, must have an option to disable any
audible alarms it might have.


I have three UPSes in that size range and none of them have fans and are
essentially silent when the power is on.

How often does power go out? If you truly find the beep objectionable,
simply cut its wire.

As for the converter noise when it's running on battery, it pretty much
"Is what it is." Why are you worried about it?

On all of these UPS's, the inverter is going to make some type of noise. The
better ones that are able to put out more than about 400 Watts will have a
fan. Some allow you to disable the alarm. If not, you can wire a switch in
series with the alarm that is inside, if it is easily accessible, but this
will void the warranty.

What we do in the sound and production studios, is that we locate the UPS's
in another room with the computers. The computers all have fans in them, and
are also noisy. We have the monitors, keyboards, and mouse's extended with
Cybex boxes, or the equivalent. If you want the computers in the same room,
you can always have the UPS's in another room, and run AC extensions through
the walls.

--

JANA
_____


"Tom S" wrote in message
ink.net...
If anyone knows of more relevant newsgroups to post this to, we'd
appreciate the info.

We're trying to find an uninterruptible power supply (~1000VA or
more) for a quiet environment (residential living room). Which
means the unit must not have any fans, buzzing noises etc while it's
operating, and above all else, must have an option to disable any
audible alarms it might have.

We've been searching for a month and haven't found anything so far.

Any help greatly appreciated,

Tom

I have a pair of APC S-15s which are dead silent on standby and on
battery. The alarm is defeatable but the fan does operate very
briefly at switch on and change-over to battery as part of the
diagnostic operations. Other than that, silent and cool-running.

Kal

On Fri, 19 Aug 2005 09:15:56 GMT, "Tom S"
wrote:

If anyone knows of more relevant newsgroups to post this to, we'd
appreciate the info.

We're trying to find an uninterruptible power supply (~1000VA or
more) for a quiet environment (residential living room). Which
means the unit must not have any fans, buzzing noises etc while it's
operating, and above all else, must have an option to disable any
audible alarms it might have.

We've been searching for a month and haven't found anything so far.

Any help greatly appreciated,

Tom

Tom S wrote:
If anyone knows of more relevant newsgroups to post this to, we'd
appreciate the info.

We're trying to find an uninterruptible power supply (~1000VA or
more) for a quiet environment (residential living room). Which
means the unit must not have any fans, buzzing noises etc while it's
operating, and above all else, must have an option to disable any
audible alarms it might have.

We've been searching for a month and haven't found anything so far.

Any help greatly appreciated,

Tom



I use Cyberpower's OP850. its got boost and buck, windows and linux
software. Simulated sinewave. They have larger models and probably
different lines that have true sinewave if you need that, but since
computers run on DC it shouldnt be an issue. Alarms can be disabled
through software, and can be tested through software. The 1500 has a
hardware test button.

Its dead silent when running on a/c, i havent tested it when running on
battery. You probably want the OP1250. check www.pricewatch.com or
www.pricegrabber.com. Got mine from www.newegg.com

--
Respectfully,


CL Gilbert

"Tom S" wrote in message
ink.net...
If anyone knows of more relevant newsgroups to post this to, we'd
appreciate the info.

We're trying to find an uninterruptible power supply (~1000VA or
more) for a quiet environment (residential living room). Which
means the unit must not have any fans, buzzing noises etc while it's
operating, and above all else, must have an option to disable any
audible alarms it might have.

The problem is that step-up converters are quite inefficient because of the
high currents involved. This means you tend to need a fan to keep the thing
cool.

Check out APC they carry all kinds of stuff. http://www.apc.com/

HotRod wrote:
Check out APC they carry all kinds of stuff. http://www.apc.com/



A little research on the forums like www.anandtech.com shows apc falling
off a bit. Perhaps their high end is still good, but they are skimping
on the medium range. The new models lack features the old models had.

Thats why I went with cyberpower. But im sure APC is stil a solid product.



--
Respectfully,


CL Gilbert

Tom S wrote:
We're trying to find an uninterruptible power supply (~1000VA or
more) for a quiet environment (residential living room). Which

Put it in the garage and run a separate circuit to the L/R.

In sci.electronics.repair HotRod wrote:
Check out APC they carry all kinds of stuff. http://www.apc.com/

I was told APC doesn't do decent repairs (only some exchange scheme) and
will not give out any service information. A definite no-no.

---
Met vriendelijke groet,

Maarten Bakker.

wrote in message
...
In sci.electronics.repair HotRod wrote:
Check out APC they carry all kinds of stuff. http://www.apc.com/

I was told APC doesn't do decent repairs (only some exchange scheme) and
will not give out any service information. A definite no-no.

---
Met vriendelijke groet,

Maarten Bakker.

If the warning beeper is what you dont like why not open the unit up and
disable the little speaker that makes all the noise, suggested ways are
crush with pliars, remove from board, stuff hole with cotton and glue or
plug hole with screw. Would leave you with the little light that flashes
when in battery mode.

Jeff wrote:
wrote in message
...

In sci.electronics.repair HotRod wrote:

Check out APC they carry all kinds of stuff. http://www.apc.com/

I was told APC doesn't do decent repairs (only some exchange scheme) and
will not give out any service information. A definite no-no.

---
Met vriendelijke groet,

Maarten Bakker.


If the warning beeper is what you dont like why not open the unit up and
disable the little speaker that makes all the noise, suggested ways are
crush with pliars, remove from board, stuff hole with cotton and glue or
plug hole with screw. Would leave you with the little light that flashes
when in battery mode.



to be fair, 10 years ago when i had a low end apc, even that one you
could disable the beeping on.

--
Respectfully,


CL Gilbert

CL (dnoyeB) Gilbert wrote this in
:
If the warning beeper is what you dont like why not open the unit up
and disable the little speaker that makes all the noise, suggested
ways are crush with pliars, remove from board, stuff hole with cotton
and glue or plug hole with screw. Would leave you with the little
light that flashes when in battery mode.



to be fair, 10 years ago when i had a low end apc, even that one you
could disable the beeping on.


This is not true on low-end APC today. Please avoid cheap APC. Expensive
APC is really nice, but then again, it is expensive.

--
MVH,
Vidar

www.bitsex.net

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On Fri, 19 Aug 2005 09:15:56 GMT, "Tom S"
wrote:

We're trying to find an uninterruptible power supply (~1000VA or
more) for a quiet environment (residential living room). Which
means the unit must not have any fans, buzzing noises etc while it's
operating, and above all else, must have an option to disable any
audible alarms it might have.

We've been searching for a month and haven't found anything so far.


http://www.oneac.com/




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--
-john
wide-open at throttle dot info