General Electric experimental "Kenotron" diode
date: label: date made
content: 1919
name: label: maker
content: General Electric Company
notes: label: Description (Brief)
content: A brass medium-screw base with skirt and two glass insulators. One plastic-insulated lead emerges from the skirt and is soldered to the screw base. Two other leads emerge from the skirt and the upper insulator and are twisted together. A cone-shaped anode is mounted above four leads set in a bulbous press and is connected to another lead that extends upwards through the envelope tip. Tipped G-shaped envelope. Stamped on envelope: "P. a ) 334 -"; stamped on base: "Patented / Nov.8.1904 / Nov.22.1904". Patents refer to the screw base designed by Alfred Swan at General Electric. This appears very similar - but not identical - to the experimental Kenotron illustrated in Gerald Tyne's "Saga of the Vacuum Tube," page 152.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from the United States Bureau of Standards, Dept. of Commerce
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.320226
label: catalog number
content: 320226
label: accession number
content: 188571
objectType: label: Object Name
content: Electron Tube, Diode
label: Object Name
content: diode
label: Other Terms
content: Electron Tube, Diode; Electron Tubes
physicalDescription: label: Measurements
content: overall: 6 in x 2 in; 15.24 cm x 5.08 cm