CATHODE POUR CANON A ELECTRONS A GRILLE, GRILLE DESTINEE A ETRE ASSOCIEE AVEC UNE TELLE CATHODE ET CANON A ELECTRONS COMPORTANT UNE TELLE CATHODE

摘要

The present invention relates to a grid electron tube whose cathode is comprised of an emissive part (12) which delimits a substantially central recess (11). Said cathode reduces considerably the emission of spurious electrons of the grid by contributing to its cooling. Application particularly to electronic tubes known as IOT.