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Article #2097

Re: Why not 120 VDC ? Why invert?

#2097
From: Rob Kleinschmidt
Date: Tue, 26 Jan 1993 17:54
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In article <1993Jan23.000753.14523@michael.apple.com>, ems@michael.apple.com (E. Michael Smith) writes:
>Pondering this ...  Why not just use a 120 VDC battery pack and use
>120 VDC for a bunch of stuff?  Lightbulbs don't care if they are
>AC or DC,

>So why not?  Why not have a 120 VDC battery bank directly running 
>the incadecent lights, and any easy to change motors like heaters,
>and any suitable electronic ballast CF bulbs?  Then you only need
>an inverter for the electronic stuff, some general purpose outlets
>in the kitchen and other parts of the house, and maybe the fridge.

A neighbor of ours was actually running a setup like this. Not sure
if the lines were part time D.C. part time A.C. or full time D.C. .
He had also built several small inverters for various individual
appliances.

Among other things, I understand that standard 120v switches may
not be appropriate because of D.C. arcing, and I think that it
would perhaps be a good idea to use non-standard plugs and outlets
to prevent connection of inappropriate stuff to a DC outlet.

With kids to worry about, it seemed prudent to make our house
straight A.C. and plunk down the bucks for the inverter.


R. Kleinschmidt
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Message-ID: <6212@gumby.Altos.COM>
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References: <1993Jan23.000753.14523@michael.apple.com> <1jr751INN16a@gap.caltech.edu>

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From: robk@gumby.Altos.COM (Rob Kleinschmidt)
Newsgroups: sci.energy
Subject: Re: Why not 120 VDC ?  Why invert?
Message-ID: <6212@gumby.Altos.COM>
Date: 26 Jan 93 17:54:37 GMT
References: <1993Jan23.000753.14523@michael.apple.com> <1jr751INN16a@gap.caltech.edu>
Reply-To: robk@altos.COM (Rob Kleinschmidt)
Organization: Altos Computer Systems, San Jose, CA
Lines: 26