Philips type D-1 triode
date: label: date made
content: ca 1920
name: label: maker
content: Philips
notes: label: Description (Brief)
content: A 4-pin metal base (long pins), with tipped T-shaped envelope. Donor’s card reads: “Triode made by Philips of Holland about 1920. Marked: “For amateur and experimental use.” Filament: 3.5 volts at .5 ampere. Used as a “soft” detector in radio receivers, with 25 to 0 volts on the plate.” See also: https://www.radiomuseum.org/tubes/tube_d1~2.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.324423
label: catalog number
content: 324423
label: accession number
content: 252994
objectType: label: Object Name
content: triode
physicalDescription: label: Measurements
content: overall: 3 1/2 in x 1 1/4 in; 8.89 cm x 3.175 cm