De Forest type D01A "Audion" triode
date: label: date made
content: ca 1927
name: label: maker
content: De Forest Radio Telephone & Telegraph Co.
notes: label: Description (Brief)
content: De Forest type D-01A "Audion" triode. Ceramic base with 4-pins and makers stamp, tipped S-shaped envelope with paper testing label. Donor’s card reads: “Triode made by De Forest in the 1920s as an all purpose tube for AM broadcast receivers. Interchangeable with types UV-201-A and UX-201-A tubes. Filament: 5 volts at .25 ampere.”
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.324438
label: catalog number
content: 324438
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 1/2 in x 1 3/4 in; 11.43 cm x 4.445 cm