Marconi-Osram type DER radio valve
date: label: date made
content: ca 1926
name: label: maker
content: Marconi-Osram Valve Co., Ltd.
notes: label: Description (Brief)
content: Marconi-Osram type DER vacuum tube. Marked: "Marconi Valve / Made at the Osram Lamp Works / BBC / Fil. Volts 1.8 / Fil. Amps 0.35 av, anode volts 30-80." Triode with metal base, 4 banana pins with plastic insulator. Tipped S-shaped envelope. Paper label: "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.322507
label: catalog number
content: 322507
label: accession number
content: 241556
objectType: label: Object Name
content: triode
label: Object Name
content: vacuum tube
physicalDescription: label: Measurements
content: overall: 4 1/4 in x 1 3/4 in; 10.795 cm x 4.445 cm