Tubes

Duration: 11 min

Creator: Encyclopaedia Britannica Films

Format: 16mm

Sound: Sound

Description: Animated drawings show the way in which vacuum tubes work. The three functions of the vacuum tube in radio are explained; how it serves in amplifying current to operate the loudspeaker, how it is used as a rectifier in detection, and how it is used as an oscillator tube in the transmission station to produce the carrier wave.

Complete Record: Category: Electronics Subcategory: Oils. Type: Motion Picture Source: EBFilms Price: $50. Format code: 16sd

Metadata Source:Index of Training Films 1946