Transmitting triode
date: label: date made
content: ca 1930
notes: label: Description (Brief)
content: Marked on masking tape: "Wingard". "WT-25" on one side of press, "A-138" on other side. No extant stampings of makers marks on envelope. A rectifier tube for converting alternating to direct current. Three stranded copper leads emerge from one end, one stranded copper lead emerges from the other, Glass insulating sleeves. Tubular glass envelope with G-shaped bulge near the center and exhaust tip on one end. No extant maker's markings on envelope.
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.241556.672
label: accession number
content: 241556
label: catalog number
content: 241556.672
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: triode
physicalDescription: label: Measurements
content: overall: 13 in x 5 in; 33.02 cm x 12.7 cm