[Milsurplus] Edison/Tesla battle finally ends in NYC.
Gene Smar
ersmar at verizon.net
Fri Nov 23 15:37:11 EST 2007
Al:
Thanks for the reference. It's especially enlightening if you go and read the table of contents for the entire doc.
73 de
Gene Smar AD3F
From: Al Klase <al at ar88.net>
Date: 2007/11/23 Fri PM 01:15:53 CST
To: Bob Camp <ham at cq.nu>
Cc: Brooke Clarke <brooke at pacific.net>, milsurplus at mailman.qth.net
Subject: Re: [Milsurplus] Edison/Tesla battle finally ends in NYC.
Gentlemen,
In light of the fact that this thread a persisted, A clarification is in
order. The standard farm-lighting system was 32 volts, using 16
lead-acid cells. See:
http://www.powerstream.com/1922/battery_1922_WITTE/batteryfiles/chapter17.htm
Al
Bob Camp wrote:
> Hi
>
> The farm power systems at 28 volts pre-dated anything in a automobile
> or an airplane. Like the rest of them I'm sure the lead acid
> connection had an influence on the voltage chose. Of course the rail
> systems had their own setups a long time back. They are what Edison
> was working on when he decided we needed Ni-Cads.
>
> At some point the military, especially the Navy started using
> electrical control. That stuff dated into the late 1800's. We don't
> normally see a lot of electrical mil surplus from the 1870's other
> than telegraph. It would be interesting to see what else they used.
>
> Bob
>
>
>
--
Al Klase â N3FRQ
Flemington, NJ
http://www.skywaves.ar88.net/
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