heater-type experimental triode
date: label: date made
content: ca 1924
name: label: associated user
content: unknown
notes: label: Description (Brief)
content: A plastic base with 4 pins on the bottom and 2 on opposite sides. Tipless clear glass S-shaped envelope. Stamped on base: "GUR EXP D 4928" and "A 48 S". Donor's card reads: "Triode of unknown origin, dating in the 1920s when many experimental designs of tubes for operation from AC power sources were being tried. This tube is a heater type triode with the heater connections made to the two pins in the top of the otherwise conventional UX type base." Watson lists this as a "GUR" tube, type "Exp" [experimental], number "4928".
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.324392
label: catalog number
content: 324392
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: 4 3/8 in x 1 1/4 in; 11.1125 cm x 3.175 cm