Western Electric type 311A vacuum tube
date: label: date made
content: ca 1932
name: label: maker
content: Western Electric
notes: label: Description (Brief)
content: A vacuum pentode with plastic base, five pins, top contact. domed envelope. Stamped on top: "Western Electric / Made in U.S.A. / 311A" "A low-power, suppressor-grid pentode with indirectly heated cathodes. The 311A and 329A tubes are identical except for the heaters. These tubes are intended primarily for use as audio, carrier, or radio-frequency power amplifiers where power outputs of approximately two watts are required and where the plate voltage is not in excess of 180 volts. The suppressor grid is permanently connected to the cathode within the tube." References: https://www.westernelectric.com/s/311A.pdf, and https://www.radiomuseum.org/tubes/tube_311a.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 Franklin Wingard
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.321068
label: catalog number
content: 321068
label: accession number
content: 241556
objectType: label: Object Name
content: pentode
label: Object Name
content: vacuum tube
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 4 3/4 in x 1 1/2 in; 12.065 cm x 3.81 cm