Cunningham type CX345 vacuum triode
date: label: date made
content: ca 1931
name: label: maker
content: E. T. Cunningham, Inc.
notes: label: Description (Brief)
content: A 4-pin plastic base with tipless S-shaped envelope. Getter stain on one side. Cunningham logo stamped on top of envelope. Stamped on base: "[logo] / Cunningham / CX 345". Paper label reads: "For use in / last audio / stage only". Donor’s card reads: “Triode made by the General Electric Company for E.T. Cunningham of San Francisco. An exact counterpart of the UX-245 tube made for the Radio Corporation of America. Released by RCA for sale 1 March 1929. Filament: 2.5 volts at 1.5 amperes AC. Plate voltages up to 250, with negative grid bias to 50 volts can be used on tis tube when it is used as an audio output tube in AC operated radio receivers. Capable of 2 watts audio output. Its design follows to some extent the pattern used for the UX-171 [catalog number 324380] but with double the capacity. Widely used, particularly in console receivers, to give better loudspeaker performance. Oxide coated filament.” See also: https://www.radiomuseum.org/tubes/tube_cx345.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 Paul G. Watson
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.324418
label: catalog number
content: 324418
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 in x 2 in; 12.7 cm x 5.08 cm