Cunningham type CX220 power triode
date: label: date made
content: ca 1932
name: label: maker
content: E. T. Cunningham, Inc.
notes: label: Description (Brief)
content: Power amplifier vacuum triode for audio output stages. A 4-pin base with T-shaped glass envelope. Marked: "Cunningham / CX 220" and stamped with logo on top. Paper label reads: "For use in last audio stage only / 3 / good". Reference: https://www.radiomuseum.org/tubes/tube_cx220.html.
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.241556.675
label: accession number
content: 241556
label: catalog number
content: 241556.675
objectType: label: Object Name
content: triode
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Physical Description
content: composition (overall material)
label: Physical Description
content: glass (overall material)
label: Physical Description
content: metal (overall material)
label: Measurements
content: electron tube: 10 cm x 3 cm; 3 15/16 in x 1 3/16 in
label: Measurements
content: overall: 3 7/8 in x 1 1/8 in; 9.8425 cm x 2.8575 cm