GB530300A - Improvements relating to thermionic valves and to cathode structures therefor - Google Patents

Improvements relating to thermionic valves and to cathode structures therefor

Info

Publication number
GB530300A
GB530300A GB2198939A GB2198939A GB530300A GB 530300 A GB530300 A GB 530300A GB 2198939 A GB2198939 A GB 2198939A GB 2198939 A GB2198939 A GB 2198939A GB 530300 A GB530300 A GB 530300A
Authority
GB
United Kingdom
Prior art keywords
wires
improvements relating
cathode structures
thermionic valves
thermionic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2198939A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ROBERT RICHARD NEWCOMBE MURPHY
STC PLC
Original Assignee
ROBERT RICHARD NEWCOMBE MURPHY
Standard Telephone and Cables PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to BE479731D priority Critical patent/BE479731A/xx
Application filed by ROBERT RICHARD NEWCOMBE MURPHY, Standard Telephone and Cables PLC filed Critical ROBERT RICHARD NEWCOMBE MURPHY
Priority to GB2198939A priority patent/GB530300A/en
Publication of GB530300A publication Critical patent/GB530300A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/26—Supports for the emissive material

Landscapes

  • Solid Thermionic Cathode (AREA)

Abstract

530,300. Thermionic cathodes. STANDARD TELEPHONES & CABLES, Ltd., and MURPHY, R. R. N. July 28, 1939, No. 21989. [Class 39 (i)] An indirectly heated cathode for a thermionic valve comprises a tubular sheet metal body A having inwardly depressed portions C forming eyelets through which supporting wires B are threaded so that the wires are held against the inner face of the body. The body A may be of copper and be about one inch in length. The wires or stalks B may be of molybdenum and be welded to the copper body at C. Specification 523,460 is referred to.
GB2198939A 1939-07-28 1939-07-28 Improvements relating to thermionic valves and to cathode structures therefor Expired GB530300A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BE479731D BE479731A (en) 1939-07-28
GB2198939A GB530300A (en) 1939-07-28 1939-07-28 Improvements relating to thermionic valves and to cathode structures therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2198939A GB530300A (en) 1939-07-28 1939-07-28 Improvements relating to thermionic valves and to cathode structures therefor

Publications (1)

Publication Number Publication Date
GB530300A true GB530300A (en) 1940-12-09

Family

ID=10172127

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2198939A Expired GB530300A (en) 1939-07-28 1939-07-28 Improvements relating to thermionic valves and to cathode structures therefor

Country Status (2)

Country Link
BE (1) BE479731A (en)
GB (1) GB530300A (en)

Also Published As

Publication number Publication date
BE479731A (en)

Similar Documents

Publication Publication Date Title
GB495846A (en) Improvements in and relating to electric discharge devices
GB530300A (en) Improvements relating to thermionic valves and to cathode structures therefor
GB518574A (en) Improvements in or relating to cathode ray tubes
GB426612A (en) Improvements in or relating to thermionic valves
GB531628A (en) Improvements in or relating to thermionic valves
GB532198A (en) Improvements in cathode glow discharge tubes used as voltage controllers
GB642364A (en) Improvements in or relating to indirectly heated cathodes
GB241216A (en) Improvements in and relating to electron discharge apparatus
GB517671A (en) Improvements in or relating to thermionic valves and circuit arrangements therefor
GB472344A (en) Improvements relating to the mounting of electrodes in electron discharge valves
GB482909A (en) Improvements in thermionic valves
GB523574A (en) Improvements relating to thermionic valves
GB439792A (en) Grid electrode for electron tubes
GB518766A (en) Improvements in or relating to electric discharge devices
GB507270A (en) Electron discharge devices
GB836475A (en) Low stress electrodeposited rhodium
GB365303A (en) Electron tube with incandescent cathode
GB392815A (en) Improvements in or relating to electric discharge tubes
GB472343A (en) Improvements relating to the fixing of cathode structures in thermionic valves
GB525608A (en) Improvements in or relating to electric discharge tubes for the photo-electric transformation of light
GB452372A (en) Improvements in and relating to electric discharge devices
GB401296A (en) Improvements in or relating to thermionic valves
GB566225A (en) A method of and means for attaching a lead-out conductor to an electrode of an electric vacuum tube
GB521558A (en) Improvements in or relating to electron discharge devices
GB550655A (en) Improvements in or relating to cathode ray tubes