GE / RCA type UV216 "Kenotron" half-wave vacuum rectifier
date: label: date made
content: ca 1922
name: label: maker
content: General Electric Company
label: maker
content: Radio Corporation of America
notes: label: Description (Brief)
content: Kenotron tube, made by General Electric Co. for RCA. A 4-pin base with ceramic insulator, tipped S-shaped envelope. Stamped on envelope: old RCA logo and GE logo. On base: "Kenotron / Model UV-216 / Patented / Licensed for Amateur or / Experimental Use Only." Filament 2.35 amperes, 7.5 volts. Anode: 550 volts AC, 20 watts at 350 volts DC. Reference: Reference: Tyne, "Saga of the Vacuum Tube," pages 322-323; W. C. White, "The Tron Family," Electronic Industries, Jan. 1946, notes that the term "kenotron" was coined by Irving Langmiur in 1915 to mean "vacuum instrument."
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Franklin Wingard
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.320901
label: catalog number
content: 320901
label: accession number
content: 241556
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: rectifier
label: Object Name
content: kenotron
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 5 in x 2 1/8 in; 12.7 cm x 5.3975 cm