What is meant by B+ on a Schematic?
Thanks,
Shahbaz

:What is meant by B+ on a Schematic?
:Thanks,
:Shahbaz
:
B+ is the high voltage DC source used to supply plate voltage to the various tubes in the set

::What is meant by B+ on a Schematic?
::Thanks,
::Shahbaz
::
:B+ is the high voltage DC source used to supply plate voltage to the various tubes in the set
:
Thank You Processhead!!

...of positive polarity.

The negative side of the high voltage supply is B-.

It uses the letter B because back when radios were powered by batteries, the batteries were assigned the first 3 letters of the alphabet--A for the filament battery, B for the plate supply battery, and C for the bias battery. Rarely will you find electric radios with a separate C supply, as it is often configured into the B supply.

T.

:...of positive polarity.
:
:The negative side of the high voltage supply is B-.
:
:It uses the letter B because back when radios were powered by batteries, the batteries were assigned the first 3 letters of the alphabet--A for the filament battery, B for the plate supply battery, and C for the bias battery. Rarely will you find electric radios with a separate C supply, as it is often configured into the B supply.
:
:T.

So it really means the supply the Voltage comes from, not where it goes or what it does. So,
A can also go to pilot lights, B to screens, and C used to be supplied by a bias cell, but as mentioned above it is done by resistors these days.
Lewis
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