[Amps] Terminology Question

[w2fca@qsl.net (Frank Ayers)]

Seems to me it refers to the positive plate voltage that used to come from
a "B" battery, hence B+

Frank
W2FCA

> 
> What is the origin of the B+ term in amp/radio/power supply terminology.
I 
> understand it to be the high voltage supply, but I do not know the origin
of 
> the designation and that has finally bothered me at age 52. It seems to
me 
> the only voltage referred to with this type of shorthand.........i.e. no
A+ 
> or -; no B-, no C + or -. 
> 
> 
> R Meadows
> k8BUX
>