RCA type 812 triode
date: label: date made
content: ca 1938
name: label: maker
content: Radio Corporation of America
notes: label: Description (Brief)
content: A plastic 4-pin base with top contact, domed envelope. Envelope stamped: “812.” Donor’s card reads: “Triode made by the Radio Corporation of America about 1938 for transmitting purposes. Used as an audio frequency amplifier or modulator, and as a radio frequency amplifier or oscillator up to 30 megacycles. Thoriated tungsten filament: 6.3 volts at 4 amperes. As a Class C radio frequency amplifier with 1250 volts on the plate, 115 volts negative control grid bias, this tube can deliver an output of 130 watts of power.”
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Paul G. Watson
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.324967
label: catalog number
content: 324967
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube, Triode
label: Object Name
content: triode
label: Other Terms
content: Electron Tube, Triode; Electron Tubes
physicalDescription: label: Measurements
content: overall: 6 1/2 in x 2 1/2 in; 16.51 cm x 6.35 cm