Western Electric type 212D transmitting triode
date: label: date made
content: ca 1933
name: label: maker
content: Western Electric
notes: label: Description (Brief)
content: A 250 watt transmitting triode with 4-pin base, T-shaped envelope. Marked: "Western Electric / Made in U.S.A. / 212 D / Pat. in U.S.A. / 12-19-16 12-17-18 5-13-19 6-24-19 1-27-20 6-13-22 10-14-22 5-29-23 12-18-23 1-8-24 4-22-24 5-5-25 8-7-23 Two Pats. / 6-16-25 Two Pats. / Pats. Applied For." Also, "3" and "5904 2". "A three-element, air-cooled, general purpose tube. It may be used as an audio-frequency power amplifier or modulator." Reference: https://www.westernelectric.com/s/212D.pdf.
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.322678
label: catalog number
content: 322678
label: accession number
content: 241556
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: 13 1/2 in x 3 1/2 in; 34.29 cm x 8.89 cm