Philips type A-109 receiving triode
date: label: date made
content: ca 1928
name: label: maker
content: Philips
notes: label: Description (Brief)
content: A plastic 4-pin base (long pins) with silvered S-shaped envelope. Donor’s card reads: “Triode made by Philips of Holland. Receiving type used as a Class A amplifier. Has the standard American UX base of the 1920s. Filament type: 1.25 volts at .06 amp. Plate 140 volts at 2.2 milliamperes, 8.5 volt negative control grid bias.” See also: https://www.radiomuseum.org/tubes/tube_a109_ux4.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.324749
label: catalog number
content: 324749
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: 3 3/4 in x 1 1/2 in; 9.525 cm x 3.81 cm