Philips type A-441 receiving tetrode
name: label: maker
content: Philips
notes: label: Description (Brief)
content: A plastic 4-pin base with S-shaped envelope. Donor’s card reads: “Receiving tetrode made by Philips of Holland. Used as a biased detector in radio receivers. Filament type: 4 volts at .08 amp. Plate 22 volts at 1.9 milliamperes, control grid 21 volts positive bias, 3.5 volt negative screen bias.”
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.324748
label: catalog number
content: 324748
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: tetrode
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 4 1/4 in x 2 1/8 in x 1 7/8 in; 10.795 cm x 5.3975 cm x 4.7625 cm