General Electric type 12C8 twin diode semi-remote cutoff pentode
date: label: date made
content: ca 1939
name: label: maker
content: General Electric Company
notes: label: Description (Brief)
content: An 8-pin base with plastic insulator and center post, top contact, metal T-shaped envelope. Stamped: “12C8 / 639 / 188-5 / S / [GE logo]” Donor’s card reads: “Twin diode semi-remote cutoff pentode made by the General Electric Company. Metal type used as a combination detector, amplifier and automatic volume control in AC/DC radio receivers. Except for heater voltage, this tube is interchangeable with the type 6-C-8-G [catalog number 325071]. Heater type: 12.6 volts at .15 ampere.” See also: https://www.radiomuseum.org/tubes/tube_12c8.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.325274
label: catalog number
content: 325274
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: pentode
label: Object Name
content: diode
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 3 in x 1 1/4 in; 7.62 cm x 3.175 cm