Tubes
Sign in to track this film in your collection or want list.
✎ Suggest a correctionAnimated 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 catalog record
Category: Electronics
Subcategory: Oils.
Type: Motion Picture
Source: EBFilms
Price: $50.
Format code: 16sd
Subcategory: Oils.
Type: Motion Picture
Source: EBFilms
Price: $50.
Format code: 16sd
Sources
- Index of Training Films 1946 — title, creator, length, format, sound, description, catalog record
Record added 2026-07-09 22:50:35 · Suggest a correction