Western Electric type 430A cold cathode tube
date: label: date made
content: ca 1956
name: label: maker
content: Western Electric
notes: label: Description (Brief)
content: A 4-pin plastic base with glass T-shaped envelope. Radiation symbol stamped on envelope. Donor’s card reads: “Cold cathode tube made by Western Electric for use in modern [about 1962] telephone circuits. A three electrode, gas-filled, radioactive, cold cathode tube for use in relay, voltage regulator or rectifier circuits. Maximum peak anode voltage: 185; maximum forward current: 35 mA.”
label: Description (Brief)
content: “Western Electric cold cathode tubes contain a minute amount of radium bromide which is a radioactive material. ... about the same amount as a luminous watch dial.” Reference: https://www.westernelectric.com/s/430A.pdf.
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.324996
label: catalog number
content: 324996
label: accession number
content: 252994
objectType: label: Object Name
content: electron tube
label: Object Name
content: vacuum tube
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 3 7/8 in x 1 3/16 in; 9.8425 cm x 3.00355 cm