National Union type 12SL7GT high-Mu twin triode
date: label: date made
content: ca 1941
name: label: maker
content: National Union Radio Corp.
notes: label: Description (Brief)
content: An 8-pin plastic base with center post, T-shaped envelope. Stamped on envelope: “12SL7 / GT”. Donor’s card reads: “High-Mu twin triode made by the National Union Radio Company. Glass octal type used as a phase inverter or as a resistance coupled amplifier in radio equipment. Heater: 12.6 volts at .15 ampere.” See also: https://www.radiomuseum.org/tubes/tube_12sl7gt.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.325127
label: catalog number
content: 325127
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: 3 1/4 in x 1 1/4 in; 8.255 cm x 3.175 cm