General Electric GL-434 triode
date: label: date made
content: 1941
name: label: maker
content: General Electric Company
notes: label: Description (Brief)
content: A 6-pin glass base with heat sink on top. Stamped: “General [GE logo] Electric / GE-434 / Made in U.S.A.” Donor’s card reads: “Triode made by the General Electric Company beginning in November 1940 for pulse radar service. Was classified as secret during World War II. Replaced by a GL-434-A in September 1942 due to excessive grid emission in the first model. A platinum grid was placed in the A model with some little success. Bot models declared obsolete in May 1946. Tube life was extremely short. Thoriate tungsten filament, 11 volts at 28 amperes. Maximum DC plate voltage 15000, maximum negative control grid bias 2000 volts, plate dissipation 600 watts. Requires 75 cubic feet of air per minute. Ratings based on pulsed service. Maximum frequency for full power operation 250 megacycles.”
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.324542
label: catalog number
content: 324542
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: 5 1/4 in x 2 1/2 in; 13.335 cm x 6.35 cm