Marconi-Osram type R triode
date: label: date made
content: ca 1925
name: label: maker
content: Marconi-Osram Valve Co., Ltd.
notes: label: Description (Brief)
content: A 4-pin brass base (banana pins) with plastic insulator, horizontal collector assembly, tipped S-shaped envelope. Stamped: "R / BBC / 110073" and "Marconi Valve / Made at the Osram Lamp Works / Covered Under Various Patents." Paper label reads: "Fil. Volts 4.0 Fil. Amps. .065 av. / This valve has been thoroughly tested before leaving / the Works, and no responsibility can be accepted / for valves used under conditions other than the above. / Suitable Anode Volts 45-60." Reference: Tyne: "Saga of the Vacuum Tube," pages 382-384.
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.322500
label: catalog number
content: 322500
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 5/8 in x 1 3/4 in; 11.7475 cm x 4.445 cm