Emerson type EMV3A "Multivalve" triple triode
date: label: date made
content: 1927
name: label: maker
content: Emerson Radval Corp.
notes: label: Description (Brief)
content: A 4-pin plastic base with 4 machine screws set in a collar. Tipped S-shaped envelope, mostly silvered, with small window on one side. Molded on collar: "Multivalve". In original box: "The / Emerson / Multivalve / Patents Pending / Type / E.M.V.-3A / Fil. Volts - 5.0 / Fil. Amps - .25 / Plate Volts - 45-135 / Emerson Radval Corp. / 25 West 43 Street / New York, N.Y." Reference: Tyne, "Saga of the Vacuum Tube," pages 347-348; also https://www.radiomuseum.org/tubes/tube_multivalve.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.321184
label: catalog number
content: 321184
label: accession number
content: 241556
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: vacuum tube
label: Object Name
content: triode
physicalDescription: label: Physical Description
content: cardboard (box material)
label: Measurements
content: tube: 5 in x 2 in; 12.7 cm x 5.08 cm
label: Measurements
content: box: 5 in x 2 1/2 in x 2 3/8 in; 12.7 cm x 6.35 cm x 6.0325 cm