Western Electric type 708-A triode
date: label: date made
content: ca 1943
name: label: maker
content: Western Electric
notes: label: Description (Brief)
content: A metal can with four contacts on the bottom and a glass tip on top. Stamped: “Western Electric / 708A”. Donor’s card reads: “Triode made by Western Electric for the US government during World War II. Classified as secret during the war. This tube is a negative grid radiation cooled triode designed for operation as a converter or radio frequency amplifier at ultra high frequencies (centimeter wave lengths). It is particularly adapted to grounded grid type circuits, and the base and leads are designed for convenient connection to coaxial tuners or transmission lines. The metal envelope provides complete shielding for the tube elements. Thoriated tungsten filament: 1.7 volt at 1.85 amperes. Plate: 350 volts at 45 milliamperes; impedance 4000 ohms, amplification factor 10, plate dissipation 10 w.”
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.324766
label: catalog number
content: 324766
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: 2 1/4 in x 2 in; 5.715 cm x 5.08 cm