RCA type 811 power triode
date: label: date made
content: ca 1943
name: label: maker
content: Radio Corporation of America
notes: label: Description (Brief)
content: A 4-pin plastic base with top contact, domed envelope. Donor’s card reads: “Power triode made by the Radio Corporation of America for the US government during World War II. Used as an audio amplifier or modulator, and as a radio frequency amplifier or oscillator up to 30 megacycles. Thoriated tungsten filament: 6.3 volts at 4 amperes. Used as a Class B audio amplifier two 811 tubes in push-pull will give 340 watts output with 1500 volts on the plates, 4.5 volt negative control grid bias, and a drive of 4.5 watts.” See also: https://www.radiomuseum.org/tubes/tube_811.html.
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.324827
label: catalog number
content: 324827
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 1/4 in; 16.51 cm x 5.715 cm