Sylvania type SN-4 Strobotron tube
date: label: date made
content: ca 1957
name: label: maker
content: Sylvania Electric Products Inc.
notes: label: Description (Brief)
content: A 4-pin plastic base with tipless, T-shaped envelope. Donor’s card reads: “Strobotron made by the Sylvania Corporation in 1958 and before. Users’ price at that time was $7.10. The type SN-4 is a xenon gas filled tube designed for high rate pulsing providing a bluish white flash of short duration. Capable of 60 or more flashes per second. Minimum operating voltage 250 with a maximum of 300. The stroboscopic effect of repetitive synchronized flashes freezes the motion of rotary and reciprocating action, permitting either visual or photographic examination of either. These tubes are used in checking automobile timing, spot check of ink flow and registry in multicolor printing, wheel balancing, etc. Also known as type 1-D-21. Maximum anode voltage 300, average cathode current 50 milliamps, trigger grid -50 to +50 volts. Color of light – neon-red. Discharge capacitance: 2 mfd maximum.” See also: https://www.radiomuseum.org/tubes/tube_sn4_strobotron.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.325224
label: catalog number
content: 325224
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: electron tube
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 4 in x 1 in; 10.16 cm x 2.54 cm