Subj : Charger
To   : TOM WALKER
From : ED VANCE
Date : Sun Jun 19 2005 06:22 pm

After writing this reply I continued reading more messages and found
that MOST of what I have typed below has been already answered by
others, but I'm going to post it anyway to keep the Tech Echo going.

TW>RJT>RJT> TW>  I must have mistated my Question. I am Fimilat with "AA" matte
TW>RJT>RJT> TW> and  "AAA" battereis but don't recal the "A" designation for MA
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 ma
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.

Tom, Roy, et al, Just thinking about all this discussion of batteries
made me remember what I think a A cell looked like.

In 1956 in Electric Shop in High School I (we) used several cells
connected in Series and or Parallel in lab experiments.

I think they were 1 1/2 volts each.

They were about 2 1/2" round and about 6" tall with 2 Fahnstock clips on
the top of them to connect wires to.
I think some even had screw on connectors instead of the fahnstock
clips.

Is my memory accurate or am I just imaging things in my old age?
(I'm 63)

Also, I think I remember seeing old battery powered radios that used
discrete A, B and C cells instead of the combination battery
arrangement. I think those A cells were rectangular.

I was young back when those BIG battery powered radios were being phased
out.

I remember my older brother getting a portable TUBED radio that had a
small RECHARGEABLE 67.5v battery in it. it was about 1 1/4" wide by
3/4" by 5" long. There was a A battery in it for the Filament supply but
I can't remember what kind it had. It either used tubes with 1v or 3v
filaments. The whole radio was about 6" by 3 1/2" by 1 1/2" and you
could either recharge the 67.5v battery on the charger or use the
charger to run the radio off AC.
That radio used small base tubes with 7 or 9 pins.

You sure didn't want to touch your tongue to that battery when it was
charged up either!!

TW> WHICH brings up another question. WHAT ever happened to the "B"
TW> Battery? :-) :-)

As far as the B battery goes I guess when the early Transistor Radios
came out using various 6v and 9v battery arrangements until the
rectanglar 9v battery became the popular standard in common use,
THAT is your B battery now-a-days.


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