Western Electric type 203D triode
date: label: date made
content: ca 1925
name: label: maker
content: Western Electric
notes: label: Description (Brief)
content: A 4-pin plastic base with, corrugated plates, tipped T-shaped envelope. In original box with instruction sheet. Stamped on envelope: "Western Electric / Made in U.S.A. / 203-D / Pat. in U.S.A. / 4-27-15 6-24-19 8-21-23 / 10-17-16 1-27-20 12-18-23 / 12-19-16 6-13-22 5-5-25 / 12-17-18 8-7-23 8-16-25 / Pats. Applied For". Appears to be a derivation of the Western Electric type J tube. References: Tyne, "Saga of the Vacuum Tube, pages 99-100; https://www.radiomuseum.org/tubes/tube_203d.html.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: ZZ.RSN79838U02
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: triode
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Physical Description
content: composition (overall material)
label: Physical Description
content: glass (overall material)
label: Physical Description
content: metal (overall material)
label: Physical Description
content: paper (box, wrapping material)
label: Measurements
content: tube: 4 1/8 in x 1 1/4 in; 10.4775 cm x 3.175 cm
label: Measurements
content: box: 5 7/8 in x 3 1/4 in x 3 1/4 in; 14.9225 cm x 8.255 cm x 8.255 cm