Electronic Tubes type PX-4 “Marconi” triode
notes: label: Description (Brief)
content: A 4-pin plastic base, domed envelope, paper label: “Marconi”. Donor’s card reads: “Triode made for the Marconiphone Company Ltd. of England by Electronic Tubes Ltd., Kingsmead Works, High Wycombe, Bucks, England. An early type of audio output tube for AC operation. Filament: 4 volts at 1 ampere. Plate 300 volts at 50 ma, 45 volts negative control grid bias, output 4.5 watts.” See also: https://www.radiomuseum.org/tubes/tube_px4.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.324541
label: catalog number
content: 324541
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 1/2 in x 2 1/2 in; 13.97 cm x 6.35 cm