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Article #2083

Re: Why not 120 VDC ? Why invert?

#2083
From: Carl J Lydick
Date: Wed, 27 Jan 1993 15:07
22 lines
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In article <C1IpIq.DFF@usenet.ucs.indiana.edu>, amirza@bronze.ucs.indiana.edu (Anmar Caves) writes:
>>If you use a 12 volt system you can start out with one set of batteries
=>and add capacity in parallel.  If you are on 120 volts dc you have 10
=>times the number of cells.  The initial cost for a 120 volt system will be
=>much higher. 
=
=In addition, there will be ten times the number of cells in series.

But the same total number of cells in your storage system.

=Any one cell failure can ruin a bank.

The same is true if the cells are connected in parallel:  One shorted cell can
load the rest enough to damage them.
--------------------------------------------------------------------------------
Carl J Lydick | INTERnet: CARL@SOL1.GPS.CALTECH.EDU | NSI/HEPnet: SOL1::CARL

Disclaimer:  Hey, I understand VAXen and VMS.  That's what I get paid for.  My
understanding of astronomy is purely at the amateur level (or below).  So
unless what I'm saying is directly related to VAX/VMS, don't hold me or my
organization responsible for it.  If it IS related to VAX/VMS, you can try to
hold me responsible for it, but my organization had nothing to do with it.
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References: <1993Jan23.000753.14523@michael.apple.com> <1993Jan23.061702.18014@mnemosyne.cs.du.edu>,<C1IpIq.DFF@usenet.ucs.indiana.edu>

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From: carl@SOL1.GPS.CALTECH.EDU (Carl J Lydick)
Newsgroups: sci.energy
Subject: Re: Why not 120 VDC ?  Why invert?
Date: 27 Jan 1993 15:07:51 GMT
Organization: HST Wide Field/Planetary Camera
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Distribution: world
Message-ID: <1k68g7INN2ei@gap.caltech.edu>
References: <1993Jan23.000753.14523@michael.apple.com> <1993Jan23.061702.18014@mnemosyne.cs.du.edu>,<C1IpIq.DFF@usenet.ucs.indiana.edu>
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