A battery

nounElectronics.

an electric battery for heating the filament or cathode heater of an electron tube.

Origin of A battery

¹

First recorded in 1920–25

Compare B battery, C battery.

Words Nearby A battery

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use A battery in a sentence

To do so connect the grid as in Fig. 115 to the positive terminal of the A-battery.
Letters of a Radio-Engineer to His Son | John Mills
We shall call the battery which heats the filament the “filament battery” or sometimes the “A-battery.”
Letters of a Radio-Engineer to His Son | John Mills

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