Western Electric type 705A / VT255 half-wave vacuum rectifier
date: label: date made
content: ca 1943
name: label: maker
content: Western Electric
notes: label: Description (Brief)
content: A 4-pin ceramic base plate on which is mounted a cylindrical glass tube with a top contact. Stamped on base: “JAN-CW-705A VT-255 Western Electric”. Donor’s card reads: “Half-wave vacuum rectifier made by Western Electric for the US government during World War II. Electrically similar to the 705-A rectifier [catalog number 324481] but physically different in plate and tube construction. Thoriated tungsten filament: 5 volts at 4 amperes. Will handle light currents up to 10000 volts DC.” See also: https://www.radiomuseum.org/tubes/tube_705a.html, https://www.radiomuseum.org/tubes/tube_vt255.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.324698
label: catalog number
content: 324698
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: 5 in x 2 1/4 in; 12.7 cm x 5.715 cm