RCA type UV-217 "Kenotron" rectifier tube
date: label: date made
content: 1922
name: label: maker
content: Radio Corporation of America
notes: label: Description (Brief)
content: Kenotron tube, 4-pin base, tipped T-shaped envelope. Donor card reads: "Diode, made for the Radio Corporation of America and listed in their first catalog of tubes, dated 1 June 1922. A part of their original line of tubes. Known as a kenotron rectifier. This tube sold for $26.50 in 1922. A half wave rectifier in itself, two tubes were generally used to give full wave rectification. Could be badly damaged by a short circuit in its output connection. Generally used in pairs as full wave output to supply plate power to UV-203 oscillators. Filament: 10 volts at 6.5 amperes. DC output 150 watts at 1000 volts.
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.324351
label: catalog number
content: 324351
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: 7 1/2 in x 2 in; 19.05 cm x 5.08 cm