NDLI: Four-Element Tube Characteristics as Affecting Efficiency

Content Provider	IEEE Xplore Digital Library
Author	Prince, D.C.
Copyright Year	1913
Abstract	The variation in the ratio of grid and plate current of three-electrode vacuum tubes aroused considerable curiosity and the tests reported in this paper were undertaken in an endeavor to ascertain the laws of current division. It was found that in a tube having symmetrical electrodes, that is, straight wire filament, concentric cylindrical anode and cylindrical grid, made up of wires parallel to the axis, the ratio of grid and plate current was a function of the tube geometry and quite different from that usually found in commercial design. The ratio of grid to plate current in such a tube exceeds the ratio of projected grid area by only a small amount, easily accounted for by variations in the electric field around the grid wires. The considerable departures from this ratio in commercial tubes appear to be due to a combination of secondary emission from the tube anode and unsymmetrical arrangements of grid wires and supports.
Starting Page	805
Ending Page	821
Page Count	17
File Size	1627321
File Format	PDF
ISSN	07315996
Volume Number	16
Issue Number	6
Language	English
Publisher Date	1928-06-01
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Anodes Wires Electron tubes Electrodes Space charge Cathodes Electron emission Testing Impedance Electrostatics
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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Four-Element Tube Characteristics as Affecting Efficiency