Western Electric type 217A half-wave rectifier
date: label: date made
content: ca 1919
name: label: maker
content: Western Electric
notes: label: Description (Brief)
content: A 4-pin base with brass shell, plastic insulator. Tipped G-shaped envelope. Base stamped: "Western Electric / Made in USA / 217 A / Pat. In USA / 12-19-16 / 12-17-18 / Pats. Applied for." Reference: Tyne, "Saga of the Vacuum Tube," pages 292, 294.
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.321126
label: catalog number
content: 321126
label: accession number
content: 241556
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 3/8 in x 2 1/4 in; 11.1125 cm x 5.715 cm