Accession Number : ADD000954

Title :   High Vacuum Field Effect Electron Tube.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON D C

Personal Author(s) : Shelton,Joe ; Hagood,Jerry W ; Norman,Ralph L

Report Date : 17 Jul 1973

Pagination or Media Count : 4

Abstract : The patent describes an improved electron tube which eliminates the need for a heated electron source and affords simplified construction. The tube, a high vacuum tube, is capable of operating over an extended range of electrical potentials. The electron tube operates on the principle of electric field effect emission for the electron source, requiring neither gas, vapor nor a heated electrode in its envelope. Two active elements, an emitter and a collector, are enclosed in an evacuated chamber with outside connections to each element. The collector is a metal plate and the emitter is an oxide-metal composite which contains a very large number of metal filaments embedded in an insulating oxide matrix.

Descriptors :   *Electron tubes, *Patents, Field emission, Emitters, High vacuum

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE