Principles of radio. Part 3. The Vacuum tube

United States, 1943

Film
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Explains by animated drawings, the operation of a radio vacuum tube in terms of its filament, plate, and grid circuits. Illustrates the three functions of the vacuum tube in 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.

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Collection

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Credits

production company

Encyclopaedia Britannica Films

ERPI Classroom Films

Duration

00:10:30:00

Production places
United States
Production dates
1943

Collection metadata

ACMI Identifier

011422

Language

English

Subject categories

Advertising, Film, Journalism, Mass Media & TV → Radio

Advertising, Film, Journalism, Mass Media & TV → Radio frequency

Advertising, Film, Journalism, Mass Media & TV → Radio waves

Communications, Infrastructure, & Transport → Radio waves

Documentary

Documentary → Documentary films - United States

Educational & Instructional

Educational & Instructional → Educational films

Educational & Instructional → Instructional

Mathematics, Science & Technology → Oscillators, Audio-frequency

Mathematics, Science & Technology → Physics

Mathematics, Science & Technology → Radio waves

Mathematics, Science & Technology → Science

Mathematics, Science & Technology → Vacuum

Short films

Short films → Short films - United States

Sound/audio

Sound

Colour

Black and White

Holdings

16mm film; Access Print (Section 1)

Please note: this archive is an ongoing body of work. Sometimes the credit information (director, year etc) isn’t available so these fields may be left blank; we are progressively filling these in with further research.

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