visit http://www.national.com/pf/LM/LM1084.html and look at the table at the 
bottom of the page. the voltage is the number after the part number and 
hyphen.
Example:
LM1084IT-12 (12V)
LM1084IT-5.0 (5V)
LM1084IT-3.3 (3.3V)

-Travis

>From: "Erich Kern" 
>Reply-To: psn-l@..............
>To: 
>Subject: Re: Gas Generator recommendations
>Date: Tue, 8 May 2001 19:02:14 -0700
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>From larry_cochrane@.............. Tue May 08 19:28:04 2001
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>Travis,
>
>All of the regulators in the schematic have the same part number. How do 
>the
>regulators "know" you want +5 or + 12 volts out??
>
>Cheers,
>Erich
>
>-----Original Message-----
>From: Travis Farmer 
>To: psn-l@.............. 
>Date: Tuesday, May 08, 2001 3:39 PM
>Subject: Re: Gas Generator recommendations
>
>
>Re: the direct battery powered computer.
>
>A computer generally has 4 power sources. +12VDC, -12VDC, +5VDC, and -5VDC.
>all sources are needed to run the computer.
>check out http://home.midmaine.com/~cgf/graphics/comp_power_supply.jpg for
>an example of how it can be done. (charger not shown)
>
>Re: the carburetor on my Honda generator.
>
>Depends on how mechanically inclined you are. (visit the Honda shop
>otherwise)
>Get a can of spray carb cleaner (available at 99.9% of auto parts stores).
>if the carb venturi area is accessible with the carb mounted, spray a few
>small squirts on the jets. Pull the engine over a few times to burn off the
>cleaner (don't spray too muck or you will flood the engine). if it does not
>run smoothly yet, turn it off (unless it didn't start in the first place)
>and spray a few more times. make sure to pull it over a few times every now
>and then. Take notice, carb cleaner is very volatile. about the same as a
>burst of nitro into the engine. don't spray too much.
>If the carb is easily removable (enough so that you can do it without help)
>then do so and give the jets a good spray. if it is of the float bowl type,
>fill the bowl with cleaner and lightly shake it (cleans the bowl and the
>needle jets). Make sure to replace any gaskets with new ones (unless they
>are of the paper kind, those are multi use usually. if there is a mettle
>ring on the gasket, replace the gasket.)
>if doing this gets it into a more or less running state, then run a tank of
>high octane gas. Octane booster is available at wal-mart last I knew. about
>a pint to a 5 gallon can seems to work well (read the directions). Add this
>to premium gas (highest level of octane from the pump). the engine will run
>a little hotter so make sure to stop it and give it some cool off time if 
>it
>gets too hot (don't cool off with water, it will crack the block). the
>higher octane will dissolve most of the remaining varnish.
>A way of figuring the running temp, feel the exhaust gas (about a foot away
>from the muffler/pipe so as not to get burned) with your hand. most engines
>run cool enough that the exhaust is hot but not so hot it burns. if it 
>feels
>too hot, give it a break for a little while.
>only use a tank of gas (or two if it is a small tank) because the higher
>octane will lower the lifetime of the engine if used too much. If all else
>fails, visit your local Honda shop.
>
>if there is allot of super high octane gas left over, pour it into your car
>(unless it has oil pre-mixed for a 2 cycle engine). it will do wonders.
>(cleans injectors, fuel lines, pump, ect...) and as an added bonus, it 
>gives
>better acceleration.
>
>-Travis
>
>
>
> >From: CapAAVSO@.......
> >Reply-To: psn-l@..............
> >To: psn-l@..............
> >Subject: Re: Gas Generator recommendations
> >Date: Tue, 8 May 2001 11:24:31 EDT
> >MIME-Version: 1.0
> >Received: from [216.100.224.130] by hotmail.com (3.2) with ESMTP id
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>id
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> >-0400 (EDT)
> >From larry_cochrane@.............. Tue May 08 08:37:12 2001
> >Message-ID: 
> >X-Mailer: AOL 4.0 for Windows 95 sub 114
> >Sender: psn-l-request@..............
> >
> >
> >Hi Travis,
> >
> >I like your idea and plan on eventually building a similar backup system.
> >What I would like to know is how can I go about eliminating the 12V 
>DC/120V
> >AC inverter in your system. Since the computer ultimately runs on DC 
>power,
> >how can I just run it from the 12V batteries? Then a charger with an
> >automatic cutoff when the batteries are fully charged, could be connected
> >permanently to the 12 V batteries so they are always kept fully charged. 
>If
> >the 120V AC mains go down as is happening in California, the computer 
>would
> >not know it happened because it is running off the batteries. They will 
>of
> >course run down eventually but that problem can be taken care of with a
> >generator. I have an 800 Watt Honda 120V AC generator that also has a 12 
>V
> >DC
> >output that could be used to keep the batteries charged until the mains
> >came
> >back on. I hope somebody can tell me what to do inside my computer to
> >convert
> >it to run on 12V DC from the batteries.
> >
> >Also another question, does anybody know how I can clean the carburetor 
>on
> >my
> >Honda generator. I left gas in it for too many months and now it won't
> >start.
> >I took the carburetor apart and blew it out with air but it still won't
> >start. How can I get it running again?
> >
> >Best regards,
> >Cap
> >----------------------------------------------------------------------
> >In a message dated 05/07/2001 11:32:27 PM Eastern Daylight Time,
> >travis5765@........... writes:
> >
> ><<  You can build a battery backup fairly simply.
> >  just get a 12V - 110V (or whatever you need) power inverter in the
> >wattage
> >  you need, connect lots of Deep-cycle marine batteries in parallel to 
>the
> >  inverter. get a hefty, low noise, battery charger to charge all the
> >  batteries (as fast as you use the power). set up a 12V relay (with lots
> >of
> >  power handling) so that the relay coil is directly powered by the 
>charger
> >  and the switch (duel or single pole) connects/disconnects the batteries
> >from
> >  the charger. it should be setup in such a way that when the charger no
> >  longer has power, it deactivates the relay and disconnects the 
>batteries
> >  from the charger so that it does not discharge them. at least this is 
>how
> >  the UPS I have works (just one battery at the moment).
> >  Just a note, the charger should be an auto charger (automatically stops
> >when
> >  the batteries are fully charged) so as not to over charge the 
>batteries.
> >
> >  -Travis
> >   >>
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