"Sodion" type S-13 gas triode / detector
date: label: date made
content: 1923
name: label: maker
content: Connecticut Telephone & Electric Company
notes: label: Description (Brief)
content: "Sodion" type S-13 gas detector triode with a 4-pin brass base, tipless T-shaped frosted envelope. Donor card reads: "A gas filled triode of the early 1920s by Connecticut Telephone & Electric Company of Meriden, Conn. For use as a detector only. Filament 3.3 to an absolute maximum of 3.8 volts at .25 amperes. Anode voltage, 16.5 to 22.5 volts. Filament should always be operated at the lowest possible voltage for satisfactory results, so that the glow in the tube is a bright yellow and never turned up to a brilliant white. Instructions say that an over-bright filament will reduce signals. Use with a grid leak and condenser, neither of which have critical values. Based to match the UV-199 tube type, also a filament voltage match. One of the unusual tubes of the early 1920s when AM broadcasting was in its infancy. Used to a limited extent by amateurs in regenerative receivers, but caused some noise. Would oscillate with 45 volts on the plate in a conventional circuit."
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.324314
label: catalog number
content: 324314
label: accession number
content: 252994
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: 2 7/8 in x 1 in; 7.3025 cm x 2.54 cm