Subj : Charger
To   : TOM WALKER
From : JAY EMRIE
Date : Wed Jun 15 2005 10:25 pm

TW>RJT>RJT> TW>  I must have mistated my Question. I am Fimilat with "AA" 
matterie
TW>RJT>RJT> TW> and  "AAA" battereis but don't recal the "A" designation for 
MANY
TW>RJT>RJT> TW> years and  was unaware they were even still being manfactured.

TW>RJT>RJT>I don't remember ever actually seeing an "A" battery designated as
TW>RJT>RJT>such in terms of a specific size,  mostly they were designated that
TW>RJT>RJT>way because of their use (filament/heater current) along with "B"
TW>RJT>RJT>(plate voltage) and "C" (bias) back when.

TW>RJT>TW> That was my Point, Perhaps being a little picky but hrtew "A"
TW>RJT>TW> battery only existed as it applied to the Old Vucuum Tube Filiment
TW>RJT>TW> Batteries.  NIOT as an individual Cell like the "AA" and "AAA"

TW>RJT>There must've been an "A" cell at some point,  or the system wouldn't 
make
TW>RJT>sense...

TW> One would think so. And it would have been a size inbetween the "AA"
TW> and the "C" for the system to be consistant. BUT I so far have found
TW> NO trace of it.
TW> WHICH brings up another question. WHAT ever happened to the "B"
TW> Battery? :-) :-)

I'm getting old and my memory isn't what it used to be, but seems that
the A battery was round, about 2-3" in dia and about4-6" tall. Used for
grid bias or filaments I think. 1.5V IIRC.
The B battery was for the plate voltage - 45V - again IIRC.

They ceased to exist sometime in the 50s - 70s with the advent of AC/DC
sets and transistorized radio. That is when the AAs came out and a bit
later the AAAs. The C cells were long standing flashlight batteries from
way back. D cell flashlight batteries came later.

I got into electronics and the very end of the B cell usage. I used to
take apart the A cells and use the center carbon rod for makeshift
welding.

Jay
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