Western Electric type 346B cold cathode tube
date: label: date made
content: ca 1958
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. This tube is especially suitable for use in control circuits such as triggering, counting or switching apparatus. Peak anode voltage: 114; average current: 10 mA. bracket style mount. A 100,000 ohm resistor is an integral part of this tube, mounted in the bracket legs.”
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/346B.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.324995
label: catalog number
content: 324995
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 1/2 in x 1 1/4 in; 8.89 cm x 3.175 cm