General Electric type UV200 "Radiotron" triode
date: label: date made
content: 1920
name: label: maker
content: General Electric Company
notes: label: Description (Brief)
content: General Electric Radiotron UV-200 triode, brass 4-pin base with tipped glass envelope. Donor card reads: "Made for the Radio Corporation of America in 1920. The original type, but of later manufacture than [catalog number 324355]. Original design with seal tip on top. "Soft" type of gaseous detector, noisy and unstable in regeneration. Five volt tungsten filament, 1 ampere; requires a variable "B" battery voltage, from 18 to 30 volts for best results. Variation from tube to tube was great. As a comment, this model of detector was nowhere near equal to the VT-1 Western Electric tube made for the US government during World War 1. The VT-1 was much more quiet, and was stable as it went through regeneration into oscillation."
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.324369
label: catalog number
content: 324369
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube , Diode
label: Object Name
content: triode
label: Other Terms
content: Electron Tube , Diode; Electron Tubes
physicalDescription: label: Measurements
content: overall: 4 3/8 in x 1 3/4 in; 11.1125 cm x 4.445 cm