Toshiba type UZ57 vacuum pentode
date: label: date made
content: 1940
name: label: maker
content: Toshiba Corporation
notes: label: Description (Brief)
content: A vacuum pentode of Japanese make. A six-pin base with two pins larger than the other four. Top contact. Markings: on base: [three Japanese characters] / UZ-57"; the same three characters are stamped vertically on the envelope above a paper label. These characters have been identified by museum staff as "Matsuda," a trade name equivalent to Mazda, used by Tokyo Shibaura Electric Co. Ltd., later known as Toshiba. General Electric owned stock in a predecessor company, Tokyo Electric, for some years; GE created and licensed use of the Mazda trade name. This was similar to their arrangement with UK affiliate, British Thomson Houston Co.
label: Description (Brief)
content: A paper label on the tube is printed with different characters and stamped in blue with a circled character and an anchor; an anchor is also printed on the opposite side of the envelope. The characters to the left on the label indicate a manufacturing date of 1940, not long after the 1939 merger that created Toshiba. It is unclear if the donor acquired this tube before or after World War II.
label: Description (Brief)
content: Reference: https://www.radiomuseum.org/tubes/tube_uz-57.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.320924
label: catalog number
content: 320924
label: accession number
content: 241556
objectType: label: Object Name
content: pentode
label: Object Name
content: vacuum tube
physicalDescription: label: Measurements
content: overall: 5 in x 1 1/2 in; 12.7 cm x 3.81 cm