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philo

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Since: Feb 08, 2004
Posts: 687



(Msg. 1) Posted: Sun Feb 15, 2004 5:35 pm
Post subject: 24 hours of backup
Archived from groups: alt>comp>hardware (more info?)
I just wired up a 12volt dc to 120vac sine wave inverter
and connected five 12v sealed batteries

see pix http://www.plazaearth.com/philo/battery.jpg

I calculate that I have about 24 hours of computer backup.

Of course...that's nuts because I can live without my computer for 24 hours
but now realize I could not live without coffee for more than 8 hours.

My inverter is only 750VA and my coffee maker is 900watts (gasp).

So its back to the drawing board!

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kony

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Since: Jan 03, 2004
Posts: 7693



(Msg. 2) Posted: Mon Feb 16, 2004 1:16 am
Post subject: Re: 24 hours of backup [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
On Sun, 15 Feb 2004 14:35:57 -0600, "philo" wrote:

 >I just wired up a 12volt dc to 120vac sine wave inverter
 >and connected five 12v sealed batteries
 >
<font color=purple> >see pix <a rel="nofollow" style='text-decoration: none;' href="http://www.plazaearth.com/philo/battery.jpg</font" target="_blank">http://www.plazaearth.com/philo/battery.jpg</font</a>>
 >
 >I calculate that I have about 24 hours of computer backup.
 >
 >Of course...that's nuts because I can live without my computer for 24 hours
 >but now realize I could not live without coffee for more than 8 hours.
 >
 >My inverter is only 750VA and my coffee maker is 900watts (gasp).
 >
 >So its back to the drawing board!
 >

Obviously you need to overclock your UPS... copper watercooled 'sinks or a
prometia, purified copper rewound transformer... or just get an RV
coffeemaker, run it straight from a battery.

What do you have chaging that rack? Whatever it is, is probably worth
more than the UPS.

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philo

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Since: Feb 08, 2004
Posts: 687



(Msg. 3) Posted: Mon Feb 16, 2004 1:16 am
Post subject: Re: 24 hours of backup [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
 >
 > Obviously you need to overclock your UPS... copper watercooled 'sinks or a
 > prometia, purified copper rewound transformer... or just get an RV
 > coffeemaker, run it straight from a battery.
 >
 > What do you have chaging that rack? Whatever it is, is probably worth
 > more than the UPS.

Hey maybe i could plug my coffee maker into it
then boil the water by putting a kettle directly on top of the power
transformer!

At any rate...the UPS is built by Best Power Products
and has a built-in hysteresis loop charger. Of course the charger
would take a week to recharge all those batteries...
however I have a 90 amp charger I can hook up if necessary.

again ...all surplus equipment from a former company i worked at
that got bought out.
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John McGaw

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Since: Jan 05, 2004
Posts: 22



(Msg. 4) Posted: Mon Feb 16, 2004 7:49 pm
Post subject: Re: 24 hours of backup [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
"philo" wrote in message

 > I just wired up a 12volt dc to 120vac sine wave inverter
 > and connected five 12v sealed batteries
 >
<font color=purple> > see pix <a rel="nofollow" style='text-decoration: none;' href="http://www.plazaearth.com/philo/battery.jpg</font" target="_blank">http://www.plazaearth.com/philo/battery.jpg</font</a>>
 >
 > I calculate that I have about 24 hours of computer backup.
 >
 > Of course...that's nuts because I can live without my computer for 24
hours
 > but now realize I could not live without coffee for more than 8 hours.
 >
 > My inverter is only 750VA and my coffee maker is 900watts (gasp).
 >
 > So its back to the drawing board!
 >
What you need is one of the Trace 3600VA inverter/charger units sold for RV
usage. They are available for 12V, 24V, and (I believe) 48V battery packs
with 24V being the most common on big bus-type RVs. One of these will easily
run a window-type AC which you see mounted in the fiberglass housings on the
top of so many conversions.
--
John McGaw
[Knoxville, TN, USA]

Return address will not work. Please
reply in group or through my website:
<a rel="nofollow" style='text-decoration: none;' href="http://johnmcgaw.com" target="_blank">http://johnmcgaw.com</a>
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George2

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Since: Jan 17, 2004
Posts: 57



(Msg. 5) Posted: Tue Feb 17, 2004 2:12 am
Post subject: Re: 24 hours of backup [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
Just get yourself a whole house generator converted to natural gas with an
automatic transfer switch and a 5 minute UPS will do and you'll have all the
comforts of home...

"philo" wrote in message

 > I just wired up a 12volt dc to 120vac sine wave inverter
 > and connected five 12v sealed batteries
 >
<font color=purple> > see pix <a rel="nofollow" style='text-decoration: none;' href="http://www.plazaearth.com/philo/battery.jpg</font" target="_blank">http://www.plazaearth.com/philo/battery.jpg</font</a>>
 >
 > I calculate that I have about 24 hours of computer backup.
 >
 > Of course...that's nuts because I can live without my computer for 24
hours
 > but now realize I could not live without coffee for more than 8 hours.
 >
 > My inverter is only 750VA and my coffee maker is 900watts (gasp).
 >
 > So its back to the drawing board!
 >
 >
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George2

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Since: Jan 17, 2004
Posts: 57



(Msg. 6) Posted: Tue Feb 17, 2004 2:15 am
Post subject: Re: 24 hours of backup [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
A "former company"??? What is it now??? A subsidiary??? Or, do you mean a
company you formerly worked at???

"philo" wrote in message

 >
 > again ...all surplus equipment from a former company i worked at
 > that got bought out.
 >
 >
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mcheu

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Since: Nov 13, 2003
Posts: 123



(Msg. 7) Posted: Tue Feb 17, 2004 8:17 pm
Post subject: Re: 24 hours of backup [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
On Sun, 15 Feb 2004 14:35:57 -0600, "philo"
wrote::

 >I just wired up a 12volt dc to 120vac sine wave inverter
 >and connected five 12v sealed batteries
 >
<font color=purple> >see pix <a rel="nofollow" style='text-decoration: none;' href="http://www.plazaearth.com/philo/battery.jpg</font" target="_blank">http://www.plazaearth.com/philo/battery.jpg</font</a>>
 >
 >I calculate that I have about 24 hours of computer backup.
 >
 >Of course...that's nuts because I can live without my computer for 24 hours
 >but now realize I could not live without coffee for more than 8 hours.
 >
 >My inverter is only 750VA and my coffee maker is 900watts (gasp).
 >
 >So its back to the drawing board!
 >

Wouldn't it simply be easier to just chug a cola?

But, if you just have to have coffee, there are single cup coffee
makers and other low wattage coffee makers. Another option is a
battery operated coffee grinder and battery operated coffee maker. I
saw such a beast at a camping show once. So much for "roughing it".
----------------------------------------
Thanks,
MCheu
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