Machlett type ML-298-A triode
date: label: date made
content: ca 1955
name: label: maker
content: Machlett Laboratories, Inc.
notes: label: Description (Brief)
content: A large cylindrical metal tube with glass envelopes on either end and metal caps. Donor’s card reads: “Triode made by Matchlett Laboratories of Springdale, Conn. Western Electric design dating from the 1930s. Designed primarily to operate at full power at higher frequencies than conventional single ended water cooled tubes of that period. This tube could be operated up to 4 megacycles at full power while those of regular design could not exceed 1.5 to 2 megacycles. Never was widely used and in obsolete at this time (1963). Presented to [me] by Matchlett in 1963. Sale price: $2350.00. Pure tungsten filament, 27 volts at 225 amperes. Maximum ratings: plate voltage 20000; plate current 11 amperes, amplification factor 32, plate dissipation 100 kw. In typical operation as a Class C un-modulated radio frequency amplifier, 18500 volts at 6.7 amperes on the plate, 750 volt negative grid bias, this tube will deliver about 80 kw output up to 4 megacycles.”
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.325317
label: catalog number
content: 325317
label: accession number
content: 252994
objectType: label: Object Name
content: klystron tube
label: Object Name
content: klystron
label: Object Name
content: triode
physicalDescription: label: Measurements
content: overall: 50 in x 8 in; 127 cm x 20.32 cm