Re: UPS with a " I don't want it to beep when lose power' option

Billsey, are you a consultant for APC ?
What are you talking about when you say:
"If you insist on continuing such practices.. "
What practices: you mean using a UPS to provide power?

My original post (posted on Jul 15 2007 ! ) was regarding any UPS
- even the one connected to my PC.
I think that is the intent of a UPS seller.
As for squarewave, APC website states -
" Waveform Type = Stepped approximation to a sinewave " here:
http://www.apc.com/resource/include/techspec_index.cfm?base_sku=BE350G&tab=models&total_watts=200

At 3AM when a car hits a pole and I lose power at the house, since UPS switch is normally ON, I'm awoken
by a beeping that I'd like to ignore. Short of unplugging the UPS, on many models there is no FACTORY way of silencing the beep. I'd like to have a SILENCE button to turn off the beep - that's all. It was a heads-up for others to let them know that, if not needed, they might want to NOT use UPS.

Since they do not offer a means of silencing the alarm, then what HAS to happen is:
option #1 = leave plugged in , hear the beep, stay awake and wait until
battery dies (or street power reappears) OR
#2 = unplug the UPS - removing the "backup ability".
Having ONLY those factory options is/was stupid. ( Aside from the fact that
you're using even more backup power to generate the beep). THAT was my
point: PC, TV etc - same argument.

"Barry Watzman" <WatzmanNOSPAM@xxxxxxxxxx> wrote in message
news:cda40$4928b594$15442@xxxxxxxxxxxxxxxxxxxx
MOST of them do not produce a square wave, but rather a "modified sine wave" ... which is BS, but it's still not a square wave either (it does, however, have vertical sides to it's elements). I know this because I connected an oscilloscope to one (a cheap APC model) and personally observed the waveform.

As to "Store-purchasable UPS's are intended ONLY for computing equipment and NOT for ANYTHING ELSE", I simply don't agree. They work with almost anything that uses either a switching power supply (switching power supplies don't care about the input waveform) or a transformer power supply (the transformer's windings will "round" the waveform adequately for almost all devices that have transformer power supplies). Certainly, some things won't like the waveform, but you can get away with it for the VAST majority of items .... computer or not. [not everything, however, I do agree with that]


Billsey wrote:
- Bobb - wrote:

I can't be the only one with this issue and can't find an alternative.
Advice? Different vendor?
I've got a few of these home-office-sized UPS 350VA, 500VA from APC and
when I lose power at the house, I CANNOT turn off the #$%'ing beeping
noise!

Store-purchasable UPS's are intended ONLY for computing equipment and NOT
for ANYTHING ELSE. They do not produce anything even resembling clean
power, but only a 60Hz, 120v SQUARE WAVE, which could do DAMAGE to
non-computing equipment. If you have and require life-sustaining equipment
that requires uninterruptible power, I suggest you get something from the
local power company instead of the electronics store. If you have anything
other than computing equipment connected to power through a
store-purchasable UPS I suggest you remove it from the UPS—for the
equipment's own sake. The proper use of store-purchasable UPS's is to
connect computing equipment that has on-board data-storage capacity through
the UPS's battery back-up. The proper procedure in case of power-outage is
to IMMEDIATELY SHUT-DOWN that computing equipment properly—then TURN OFF
the UPS. When you do this, the beeping will stop. If you are using
store-purchasable UPS's for anything other than computing equipment you are
MISUSING those UPS's and putting your equipment in danger of damage FROM
THE UPS. If you insist on continuing such practices, then you are
displaying your own stubbornness and stupidity—and you deserve what you
get.
_______________________________________________________________________________
http://www.lulu.com/billsey


Being an electronic engineer I say hogwash! I remember cell phone
manufactures and other devices would say your warranty was void if you
use an inverter or UPS to plug into. Although I don't think they make
this claim anymore. Nor do I believe you can purchase a pure square wave
inverter or UPS anymore.

I also have used transformers on square waves before and they seem to
still function. Slightly higher temperature, but tolerable. And they
continue to work reliably for many years.

There are also UPS that doesn't use the inverter at all as long as there
is mains power. I have one of these and they use the mains power and
surge protect it as long as power is there. The UPS part kicks in only
when the mains isn't enough.

Also APC doesn't seem to mind if you use them on other non-computer
devices. Such as Telecom equipment (i.e. PBX, KEY system),
Modem/Telephone, Audio/video entertainment systems, Fax Machines, VOIP, etc.

https://www.apcc.com/support/inter_warranty/index.cfm?

So Billsey, where did you get your information? As I really would like
to know.

People who say it cannot be done should not interrupt the people who are
doing it. -- Anonymous

--
Bill
Asus EEE PC 8GB 1GB SoDIMM Adata 16GB
Windows XP SP2 and Xandros Linux

.

Loading