Philips type E438 receiving triode
date: label: date made
content: ca 1928
name: label: maker
content: Philips
notes: label: Description (Brief)
content: A plastic 5-pin base with S-shaped envelope. Maker's stamp on top, on side: "Made in Holland". Donor’s card reads: “Receiving triode made by Philips of Holland. Used as a Class A amplifier. Filament type: 4 volts at 1 amp. Plate 200 volts at 2.5 milliamperes, 2.5 volt negative control grid bias.” See also: https://www.radiomuseum.org/tubes/tube_e438.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.324755
label: catalog number
content: 324755
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 in x 2 in; 10.16 cm x 5.08 cm