EP 0045932 B1 19860507 - METHOD FOR SHORTENING THE HEATINGTIME OF AN INDIRECTLY HEATED CATHODE
Title (en)
METHOD FOR SHORTENING THE HEATINGTIME OF AN INDIRECTLY HEATED CATHODE
Publication
Application
Priority
DE 3029853 A 19800807
Abstract (en)
[origin: US4401919A] To achieve an optimum reduction of the warmup time of a Wehnelt cathode, by maintaining a good efficiency, it is proposed to use as a cathode a triode system arranged within the usual cathode sleeve, with the inside of the base plate, on the outside of which the electron-emitting layer is deposited, serving as the anode, so that the electron-emitting layer is heated by the anode dissipation of the triode system.
IPC 1-7
IPC 8 full level
H01J 1/20 (2006.01); H01J 1/22 (2006.01); H01J 9/08 (2006.01); H01J 29/04 (2006.01)
CPC (source: EP US)
H01J 1/22 (2013.01 - EP US)
Designated contracting state (EPC)
BE DE FR GB IT NL
DOCDB simple family (publication)
EP 0045932 A2 19820217; EP 0045932 A3 19820609; EP 0045932 B1 19860507; CA 1182165 A 19850205; DE 3029853 A1 19820218; DE 3029853 C2 19820826; DE 3174562 D1 19860612; FI 71853 B 19861031; FI 71853 C 19870209; FI 812424 L 19820208; JP S57118333 A 19820723; US 4401919 A 19830830
DOCDB simple family (application)
EP 81106086 A 19810804; CA 383269 A 19810805; DE 3029853 A 19800807; DE 3174562 T 19810804; FI 812424 A 19810805; JP 12314481 A 19810807; US 28332881 A 19810715