GE / Cunningham type C333 power amplifier pentode
date: label: date made
content: ca 1932
name: label: maker
content: General Electric Company
notes: label: Description (Brief)
content: A 5-pin plastic base with S-shaped envelope. Stamped on base: "Cunningham / C333". Donor’s card reads: “Power amplifier pentode made by the General Electric Company in the early 1930s under a sales agreement wit E.T. Cunningham Inc., of San Francisco. Battery operated filament type pentode for use as a Class A audio amplifier. Filament: 2 volts at .26 ampere. 180 volts on the plate, with 18 volt negative control grid bias for an output of about 1.4 watts audio power.”
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.325007
label: catalog number
content: 325007
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: pentode
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 4 1/4 in x 1 3/4 in; 10.795 cm x 4.445 cm