GB710648A - Improvements in or relating to thermionic cathodes - Google Patents

Improvements in or relating to thermionic cathodes

Info

Publication number
GB710648A
GB710648A GB848751A GB848751A GB710648A GB 710648 A GB710648 A GB 710648A GB 848751 A GB848751 A GB 848751A GB 848751 A GB848751 A GB 848751A GB 710648 A GB710648 A GB 710648A
Authority
GB
United Kingdom
Prior art keywords
per cent
nickel
cathode
april
support
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
GB848751A
Inventor
Arnold Hugh William Beck
John Crawford Jones
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.)
STC PLC
Original Assignee
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
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB848751A priority Critical patent/GB710648A/en
Publication of GB710648A publication Critical patent/GB710648A/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
    • H01J1/14—Solid thermionic cathodes characterised by the material

Landscapes

  • Electrodes For Compound Or Non-Metal Manufacture (AREA)

Abstract

710,648. Cathode materials and processing. STANDARD TELEPHONES & CABLES, Ltd. April 4, 1952 [April 12, 1951], No. 8487/51. Class 39(1) A thermionic cathode has a nickel support at least the surface of which is at least 99.98 per cent purity, the oxide coating containing a reducing agent e.g. 1 per cent by weight of zirconium hydride. The cathode may be directly or indirectly heated and the support may consist of a core or sleeve made of electrolytic nickel having less than 0.016 per cent impurities or of standard nickel, the surface of which is purified by electrolytic polishing or by firing at 900‹C in wet hydrogen.
GB848751A 1951-04-12 1951-04-12 Improvements in or relating to thermionic cathodes Expired GB710648A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB848751A GB710648A (en) 1951-04-12 1951-04-12 Improvements in or relating to thermionic cathodes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB848751A GB710648A (en) 1951-04-12 1951-04-12 Improvements in or relating to thermionic cathodes

Publications (1)

Publication Number Publication Date
GB710648A true GB710648A (en) 1954-06-16

Family

ID=9853397

Family Applications (1)

Application Number Title Priority Date Filing Date
GB848751A Expired GB710648A (en) 1951-04-12 1951-04-12 Improvements in or relating to thermionic cathodes

Country Status (1)

Country Link
GB (1) GB710648A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2916652A (en) * 1955-02-04 1959-12-08 Raytheon Co Control of electron emission in cathode assemblies
US3031740A (en) * 1958-03-12 1962-05-01 Eitel Mccullough Inc Matrix type cathode

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2916652A (en) * 1955-02-04 1959-12-08 Raytheon Co Control of electron emission in cathode assemblies
US3031740A (en) * 1958-03-12 1962-05-01 Eitel Mccullough Inc Matrix type cathode

Similar Documents

Publication Publication Date Title
GB664769A (en) Improvements in cathode-ray tubes comprising a luminescent screen provided on a glass support
GB710648A (en) Improvements in or relating to thermionic cathodes
GB932014A (en) High vacuum pumping systems
GB713063A (en) Improvements in electrode elements
GB859701A (en) Electrolytic cell for producing aluminium of high purity
GB708736A (en) Improvements in positive electrodes for alkaline accumulators
GB826634A (en) Improvements in or relating to electrolytic reduction cells for the production of aluminium
GB818051A (en) Improvements in or relating to the manufacture of thermionic cathodes
GB792046A (en) Improvements in or relating to cathode ray tubes for use in television receivers
GB910072A (en) Improvements in or relating to ionisation manometers
ES339383A1 (en) Production of sols
GB700313A (en) Improvements in or relating to electrodes for electrical discharge apparatus
GB934145A (en) Improved fuel cell
GB776255A (en) Improvements in electric discharge devices
GB840378A (en) Improvements in or relating to electric accumulators
GB827557A (en) Improvements in or relating to cathodes for electron guns of cathode ray tubes
GB693461A (en) Improvements in or relating to electrical condensers
GB671529A (en) Improvements in or relating to electron emitting electrodes
JPS5329613A (en) Pick up tube
GB1004776A (en) Improvements in cathode construction
GB467248A (en) Improvements in and relating to electric discharge devices
GB654435A (en) Improvements relating to the electrolytic treatment of metallic surfaces
GB854682A (en) Improvements in or relating to cathode-ray tubes
GB697613A (en) High intensity positive carbon electrodes
GB810110A (en) Improvements in or relating to cathode ray tubes