De Forest type DV3A "Audion" triode
date: label: date made
content: ca 1924
name: label: maker
content: De Forest Radio Telephone & Telegraph Co.
notes: label: Description (Brief)
content: De Forest type DV3A "Audion" triode. Ceramic ("isolantite") intermediate base shell with 4-pins and maker stamp, tipped T-shape envelope, silvered with test label. "De Forest - 3 Volt Dry Cell Audion", refers to carton for patents. "8215" (sn?) stamped on envelope. Reference: Tyne, "Saga of the Vacuum Tube," pages 300-306.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Franklin Wingard
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.322490
label: catalog number
content: 322490
label: accession number
content: 241556
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: triode
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 3 1/4 in x 1 3/8 in; 8.255 cm x 3.4925 cm