Marconi type QX / V24 rectifier in holder
date: label: date made
content: ca 1916
name: label: maker
content: Marconi Wireless Telegraph Co. Ltd.
notes: label: Description (Brief)
content: Four metal contacts, one at each end (filament) and one on each side (plate and grid). Cylindrical plate, helical wire grid, straight single wire filament. Tipped T-shaped envelope. Envelope stamped: "Marconi's W.T. Co Ltd. / Pat. Appn. No. 28413-13 / QX Rectifier / 950". Tube is mounted on a base. Reference: Tyne, "Saga of the Vacuum tube," 223-224. See also: https://www.radiomuseum.org/tubes/tube_v24.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 the Estate of John H. Hammond, Jr., thru The National Shawmut Bank of Boston
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.327506
label: catalog number
content: 327506
label: accession number
content: 266066
objectType: label: Object Name
content: Electron Tube, Triode
label: Object Name
content: triode
label: Object Name
content: rectifier
label: Other Terms
content: Electron Tube, Triode; Electron Tubes
physicalDescription: label: Measurements
content: tube only: 3 in x 1 in x 5/8 in; 7.62 cm x 2.54 cm x 1.5875 cm
label: Measurements
content: mount only: 1 1/4 in x 2 3/8 in x 3 1/4 in; 3.175 cm x 6.0325 cm x 8.255 cm
label: Measurements
content: overall: 1 3/8 in x 2 3/8 in x 3 1/4 in; 3.4925 cm x 6.0325 cm x 8.255 cm