GE / RCA type UX874 "Radiotron" voltage regulator tube
date: label: date made
content: 1925
name: label: maker
content: General Electric Company
notes: label: Description (Brief)
content: A 4-pin plastic base with tipless S-shaped envelope. Stamped on base: "Radiotron / UX 874". Donor's card reads: "Voltage regulator tube made by General Electric Company for the Radio Corporation of America in the early days of battery eliminators, in 1925. Used by [me] in an RCA Duo-Rectron model AP 937 B-Battery Eliminator" which had a maximum voltage of 135, using a UX-213 full wave rectifier [catalog number 324404]. In use this tube glows with a purple-pink light which is modulated by current variations through the tube." See also: https://www.radiomuseum.org/tubes/tube_ux874.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.324403
label: catalog number
content: 324403
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube, Diode
label: Object Name
content: diode
label: Other Terms
content: Electron Tube, Diode; Electron Tubes
physicalDescription: label: Measurements
content: overall: 5 3/8 in x 2 1/8 in; 13.6525 cm x 5.3975 cm