Marconi-Osram type R5v 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, vertical collector assembly with oval cross-section, tipped S-shaped envelope partially silvered. Stamped: "R.5v / BBC / 5225" and "Marconi Valve / Made at the Osram Lamp Works / Covered Under Various Patents." Paper label reads: "R.5.v / Fil. Volts 5.0 Fil. Amps. .066 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 30-100." 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.322510
label: catalog number
content: 322510
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 1/4 in x 1 5/8 in; 10.795 cm x 4.1275 cm