Sylvania type 7Z4 full-wave vacuum rectifier
date: label: date made
content: ca 1940
name: label: maker
content: Sylvania Electric Products Inc.
notes: label: Description (Brief)
content: A 6-pin metal base with center post, T-shaped envelope. Donor’s card reads: “Full-wave vacuum rectifier made by the Sylvania Corporation. Glass lock-in type. Used in the power supply of automobile and compact AC operated radio receivers. Heater type: 6.3 volts at .9 ampere. Maximum 400 volts at 100 milliamps DC output.” See also: https://www.radiomuseum.org/tubes/tube_7z4.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.325095
label: catalog number
content: 325095
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: 3 in x 1 1/4 in; 7.62 cm x 3.175 cm