Principles of radio. Part 3. The Vacuum tube

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.

How to watch

This work has not been digitised and is currently unavailable to view online. It may be possible for approved reseachers to view on-site.

Learn more about accessing our collection

Collection

In ACMI's collection

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.

Cite this work on Wikipedia

If you would like to cite this item, please use the following template: {{cite web |url=https://acmi.net.au/works/74267--principles-of-radio-part-3-the-vacuum-tube/ |title=Principles of radio. Part 3. The Vacuum tube |author=Australian Centre for the Moving Image |access-date=26 September 2022 |publisher=Australian Centre for the Moving Image}}

United States, 1943

Please note