A batteries were the heater voltage for common early
DC radios. I can remember playing with 1.5 A dry cells
(the large tall ones) when I was younger.
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B Batteries are still made that output 90 volts. They can
still be found in some older test equipment. Other
voltage B batteries are/were made.
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C batteries were also of a similar format.
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Other weird batteries were the 22.5 volt unit which is
near the size of a common 9 volt battery with connections
on each end of the cell.
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I have an older book here just on batteries... a book
of many pages. Most are no longer available and the
text is old enough to not have newer coin and calculator
types included.
-
Your results will probably vary
skipp
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>
> What is the origin of the B+ term in amp/radio/power supply
> terminology. I
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