Philips type C-509 triode
date: label: date made
content: ca 1922
name: label: maker
content: Philips
notes: label: Description (Brief)
content: Four-pin plastic base, with tipless S-shaped envelope, silvered. Donor’s card reads: “Triode made by Philips of Holland in the early 1920s. Mounted on a conventional US “Shaw” type base of that period. Filament: 5 volts at .25 ampere. As a Class A amplifier (audio); 150 volts at 4.5 milliamps on the plate. 9 volt negative control grid bias.” See also: https://www.radiomuseum.org/tubes/tube_c509.html.
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.324440
label: catalog number
content: 324440
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: 4 1/8 in x 1 7/8 in; 10.4775 cm x 4.7625 cm