Machlett type ML-357-B triode
date: label: date made
content: ca 1955
name: label: maker
content: Machlett Laboratories, Inc.
notes: label: Description (Brief)
content: A glass 3-pin base with top contact, bottom tipped cylindrical glass envelope. Stamped: “ML-357B / / Machlett / Made in U.S.A.”. Donor’s card reads: “Triode made by the Machlett Laboratories of Springdale, Conn. This tube was used in the WMBR-TV transmitter at Jacksonville, Florida. An improved design over the 357-A model [catalog number 324981]. Designed for use as a radio frequency amplifier, oscillator, and modulator at maximum rate up to 100 megacycles. Thoriated tungsten filament: 10 volts at 10 amperes. Forced air colling required full power operation. For operation as a Class C plate modulated amplifier: plate 3000 volts at 240 milliamperes, 270 volts negative control grid bias, for an output of 550 watts.”
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.324524
label: catalog number
content: 324524
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: 8 in x 4 1/2 in; 20.32 cm x 11.43 cm