EIMAC type 304-TL / VT-129 multiple triode
date: label: date made
content: ca 1944
name: label: maker
content: Eimac
notes: label: Description (Brief)
content: A 4-pin ceramic base with top and side contacts, cylindrical envelope. Donor’s card reads: “Multiple triode made by Eitel-McCullough Inc. of San Carlos, California. This tube is really four triodes connected in parallel, mounted in one glass envelope. Very difficult to neutralize, particularly at high frequency. Filament arranged for series or parallel operation, 10 or 15 volts respectively at 12.5 or 25 amperes. For Class C radio frequency operation: 2000 volts at 600 milliamperes maximum on the plate, 260 volts negative control grid bias for an output of about 700 watts. Plate lead on top, grid on the side.”
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.324546
label: catalog number
content: 324546
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: 7 1/2 in x 3 3/4 in; 19.05 cm x 9.525 cm