Western Electric type 705A vacuum rectifier
date: label: date made
content: ca 1943
name: label: maker
content: Western Electric
notes: label: Description (Brief)
content: A half wave vacuum rectifier for use in radar. A 4-pin base with ceramic plate, top contact, T-shaped envelope with neck. Marked: "Western Electric / Made in U.S.A. / 705 A / D-159780". Donor card reads: "Half wave high vacuum rectifier made by the Western Electric Company. Filament type rectifier for very high voltages, to 10000 or more. Thoriated tungsten filament, 5 volts at 4 amperes. Not available on the general market, intended for use in Western Electric communications equipment or possibly in radar equipment." See also: https://www.radiomuseum.org/tubes/tube_705a.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.324481
label: catalog number
content: 324481
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube, Diode
label: Object Name
content: diode
label: Other Terms
content: Electron Tube, Diode; Electron Tubes
physicalDescription: label: Measurements
content: overall: 5 1/4 in x 2 in; 13.335 cm x 5.08 cm