De Forest 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: 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 type CF-185 triode. Composition base with 3 pins, side-pin active, tipped T-shaped glass envelope. Printed in envelope: "Dont Exceed / .85 Amps / De Forest / type CF 185", inked in press: "3134". 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 Susan Horle
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.314086
label: catalog number
content: 314086
label: accession number
content: 195337
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: vacuum tube
label: Object Name
content: triode
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 4 1/2 in x 1 3/8 in; 11.43 cm x 3.4925 cm