Western Electric type 357-A triode
date: label: date made
content: ca 1943
name: label: maker
content: Western Electric
notes: label: Description (Brief)
content: A glass 3-pin base with top contact, T-shaped envelope. Stamped: “JAN / 357A / Made in U.S.A. / Western Electric”. Donor’s card reads: “Triode made by the Western Electric Company for the US government during World War II. This is an earlier model than the type ML-357-B [catalog number 324524]. The principle difference is the increase in plate dissipation of the ML-357-B to 400 watts as compared to 350 watts for the 357-A model. Thoriated tungsten filament, 5 volts at 6 amperes. For Class C operation, 3000 volts on the plate, 270 volt negative control grid bias, for an output of 550 watts.”
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.324981
label: catalog number
content: 324981
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: 7 1/2 in x 5 in; 19.05 cm x 12.7 cm