The Vacuum Tube In Radio (1943) by Encyclopaedia Britannica Films
Channel: OLDTVMASTERS
Date: 26/11/2021

Publication date
    1943 

Topics
    vacuum tubes, technology

Publisher
    Encyclopaedia Britannica Films, Inc.

Explains by animated drawings, the operation of a radio vacuum tube in terms of its filament, plate, and grid circuits. Illustrates three functions of the vacuum tube in the radio: how it serves as an amplifier to operate the loud-speaker, as a rectifier in detection, and as an oscillator to generate the carrier wave.