Magnavox type A1 "Anti-noise" triode
date: label: date made
content: ca 1925
name: label: maker
content: Magnavox Company
notes: label: Description (Brief)
content: A 4-pin (short) base with tipped angled envelope. Label on envelope: "[lion head logo] Magnavox / type A / Amplifier / Magnavox". Donor's card reads: "Triode made by the Magnavox Company of Oakland, California. Used in their line of audio frequency power amplifiers in the 1920s. A very unusual triode construction. The grid of sheet metal is at the two outer edges of the inverted V filament and not between the filament and plate as originally designed. Coated filament: 5 volts, 1 ampere." See also: https://www.radiomuseum.org/tubes/tube_a_magnavox.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 Paul G. Watson
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.324333
label: catalog number
content: 324333
label: accession number
content: 252994
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: 4 in x 1 1/2 in; 10.16 cm x 3.81 cm