M-O Valve type S23 "Osram" tetrode
date: label: date made
content: ca 1936
name: label: maker
content: Marconi-Osram Valve Co., Ltd.
notes: label: Description (Brief)
content: A plastic 4-pin base (banana pins) with top contact, coated domed envelope. Donor’s card reads: “Tetrode made by the M O Valve Company, Ltd., Osram Works, Brook Green, London W6, England. Used as a Class A amplifier. Metal sheath on envelope is grounded to pin in base. Filament type: 2 volts at .1 ampere. 250 volts for plate, 70 on screen.” See also: https://www.radiomuseum.org/tubes/tube_s23.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 Paul G. Watson
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.324730
label: catalog number
content: 324730
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: tetrode
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 4 3/4 in x 1 7/8 in; 12.065 cm x 4.7625 cm