Machlett Labs type ML-846 transmitting triode
date: label: date made
content: ca 1938
name: label: maker
content: Machlett Laboratories, Inc.
notes: label: Description (Brief)
content: A glass tube with copper heat sink on the bottom, side contact, and two 5" leads emerging from the top, one having ceramic tube insulators, ring terminals. Liquid-cooled transmitting tube. Stamped on envelope: "JAN-CADG-846", printed: "1000 Hour Guarantee Contract No. [?????]." Donor’s card reads: “Triode, transmitting type, made by the Machlett Laboratories for the US government during World War II. Design dates from about 1938 and is not part of the regular Machlett line of tubes. Originally designed by General Electric in 1932 to secure more power at higher frequencies. Tungsten filament type: 11 volts at 51 amperes. When used as a Class C amplifier, 6000 volts on the plate at .5 amps, 1000 volts negative control grid bias, will give about 1.3 kw of radio frequency output up to 30 megacycles. See also: https://www.radiomuseum.org/tubes/tube_846.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.325082
label: catalog number
content: 325082
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: 9 1/2 in x 3 3/4 in x 2 1/4 in; 24.13 cm x 9.525 cm x 5.715 cm