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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
- Lines: 22
- 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>
- Reply-To: carl@SOL1.GPS.CALTECH.EDU
- NNTP-Posting-Host: sol1.gps.caltech.edu
-
- 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.
-