Perryman type PR280 full-wave vacuum rectifier
date: label: date made
content: ca 1930
name: label: maker
content: Perryman Electric Company
notes: label: Description (Brief)
content: A plastic 4-pin base with tipless S-shaped envelope, getter stain, two vertical elements, one mounted on either side of stem between ceramic plates. Stamped on base: "Perryman / - PR - 280 -". Reference: https://www.radiomuseum.org/tubes/tube_pr280.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 Franklin Wingard
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.323256
label: catalog number
content: 323256
label: accession number
content: 241556
objectType: label: Object Name
content: Electron Tube, Diode
label: Object Name
content: diode
label: Object Name
content: rectifier
label: Other Terms
content: Electron Tube, Diode; Electron Tubes
physicalDescription: label: Measurements
content: overall: 5 1/2 in x 2 1/4 in; 13.97 cm x 5.715 cm