De Forest "Audion" type CF185 triode
date: label: date made
content: ca 1917
name: label: maker
content: De Forest Radio Telephone & Telegraph Co.
notes: label: Description (Brief)
content: De Forest type CF-185 "Audion" radio tube in a packing can for a type De Forest DL15 tube. The tube has a 3-pin bayonet base with plastic shell. 2 collector plates, one on either side of a flat-wound grid that surrounds a vertically-mounted tungsten filament. Tipped T-shape envelope. "De Forest Pats" stamped on collector plate. Reference: Tyne, "Saga of the Vacuum Tube," pages 120-124; https://www.radiomuseum.org/tubes/tube_cf-185.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 Franklin Wingard
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.241556.671
label: accession number
content: 241556
label: catalog number
content: 241556.671
objectType: label: Object Name
content: Container for Electron Tube
label: Object Name
content: triode
label: Object Name
content: triode box
physicalDescription: label: Physical Description
content: metal (overall material)
label: Measurements
content: container for electron tube: 15 cm x 5.3 cm; 5 7/8 in x 2 1/16 in
label: Measurements
content: overall tube: 5 1/8 in x 1 3/8 in; 13.0175 cm x 3.4925 cm