Western Electric type 228-A triode
date: label: date made
content: ca 1924
name: label: maker
content: Western Electric
notes: label: Description (Brief)
content: A large glass tube with metal 2-pin and plate top cap, heat sink on bottom. Donor’s card reads: “Triode made by the Western Electric Company for use in their first 1000 watt AM broadcasting stations available in the 1920s. The first water cooled tube of its capacity (about 1.5 kw) was widely used in the larger stations of the 1920s. Tungsten filament: 21.5 volts at 41 amperes. Operation as a Class C radio frequency amplifier, 3000 volts at 1.3 amperes on the plate, negative grid bias of 150 volts will give a carrier output of 2000 watts. One of the old work horses.”
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.324549
label: catalog number
content: 324549
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: 17 3/4 in x 3 1/2 in; 45.085 cm x 8.89 cm