steve@jplgodo.UUCP (Steve Schlaifer x43171 301/167) (10/13/86)
In article <100@houligan.UUCP>, dave@murphy.UUCP writes: > Ok, here's a stumper. In the realm of 1.5V batteries, there are AAA, AA, > C, and D sizes. What happened to the A and B sizes? > The names A, B, and C batteries come from old (very old) tube radios. The A battery supplied the filament current, the B battery the plate (anode) voltage also known as B+, the C battery supplied the grid bias. B batteries are still around. They are commonly known as lantern batteries and used to power small portable electric lamps. B batteries are much larger than the rest (about 3 inches square and 4 inches tall). -- ...smeagol\ Steve Schlaifer ......wlbr->!jplgodo!steve Advance Projects Group, Jet Propulsion Labs ....logico/ 4800 Oak Grove Drive, M/S 301/165 Pasadena, California, 91109 +1 818 354 3171