Westinghouse type WL869 mercury vapor rectifier
date: label: date made
content: ca 1929
name: label: maker
content: Westinghouse Electric Corporation
notes: label: Description (Brief)
content: Plated three-pin base with ceramic insulator, top contact, spherical envelope with neck. Mercury pooled inside and deposited on inner structures. Stamped on base shell: "[Westinghouse logo] / WL-869-A / Licensed only for / use authorized by / contact of sale". Donor’s card reads: “Mercury vapor rectifier made by Westinghouse, from the WRCV-KYW transmitter at Whitemarsh, PA., through the courtesy of John Michaels, Chief Engineer. A half-wave high-voltage rectifier designed for broadcasting service. Dates from 1929. Filament: 5 volts at 19 amperes; maximum out put 1 amperes and 7500 volts DC.” See also: https://www.radiomuseum.org/tubes/tube_869a.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.324621
label: catalog number
content: 324621
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube, Diode
label: Object Name
content: rectifier
label: Other Terms
content: Electron Tube, Diode; Electron Tubes
physicalDescription: label: Measurements
content: overall: 14 3/4 in x 5 in; 37.465 cm x 12.7 cm