Western Electric type 256A vacuum tube
date: label: date made
content: ca 1934
name: label: maker
content: Western Electric
notes: label: Description (Brief)
content: "The No. 256A vacuum tube is a three-element tube which employs an indirectly heated cathode and contains argon gas at a low pressure. It is intended for use in special circuits as a relay or trigger-action device." Reference: Western Electric 256A data sheet: https://www.westernelectric.com/s/256A.pdf. See also: https://www.radiomuseum.org/tubes/tube_256a.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.320973
label: catalog number
content: 320973
label: accession number
content: 241556
objectType: label: Object Name
content: thyratron
label: Object Name
content: triode
label: Object Name
content: vacuum tube
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 4 1/2 in x 1 3/4 in; 11.43 cm x 4.445 cm