Connewey type DC-201A "Magnatron" vacuum triode
date: label: date made
content: ca 1924
name: label: maker
content: Connewey Electric Laboratories
notes: label: Description (Brief)
content: A 4-pin brass base with ceramic insulator, tipped S-shaped envelope, silvered with burn mark on inner wall. Label on base reads: "Magnetron Filament voltage - 5 / DC-201-A Filament current con-sumption - 0.25 Amperes / Amplifier & Detector Plate voltage - 40-90 / Connewey Electric Laboratories - New York". A vacuum triode made by Connewey Electric Laboratories. Note: this is a triode, not a magnetron tube. In this case "Magnetron" is a brand name, not a technical description. Reference: https://www.radiomuseum.org/tubes/tube_dc201a.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.RSN80564U14
objectType: label: Object Name
content: vacuum tube
label: Object Name
content: triode
label: Other Terms
content: Electron Tube, Triode; Electron Tubes
physicalDescription: label: Physical Description
content: glass (overall material)
label: Physical Description
content: isolantite (overall material)
label: Physical Description
content: metal (overall material)
label: Measurements
content: tube: 4 1/8 in x 1 3/4 in; 10.4775 cm x 4.445 cm