B battery

noun

, Electronics.

1. an electric battery for supplying a constant, positive voltage to the plate of a vacuum tube.

Word History and Origins

Origin of B battery¹

First recorded in 1920–25

Example Sentences

Worst of all, if you accidentally reversed the A and B battery connectors, you could fry your radio's precious tubes.

From The Daily Beast

When the B battery is connected, it puts a positive charge on the plate of the tube.

From The Daily Beast

The negative terminal of the B-battery is connected to the filament.

From Project Gutenberg

Now, suppose that the B-battery takes away 100 of these each second.

From Project Gutenberg

Of course, as long as the switch in the B-battery is open no current can flow.

From Project Gutenberg

The B-battery will want to take in electrons at its positive terminal and to send them out at its negative terminal.

From Project Gutenberg

In the plate-filament circuit we connect the B-battery and a switch, S, and another coil.

From Project Gutenberg