GB526731A - Improvements in secondary emissive electrodes - Google Patents

Improvements in secondary emissive electrodes

Info

Publication number
GB526731A
GB526731A GB9469/39A GB946939A GB526731A GB 526731 A GB526731 A GB 526731A GB 9469/39 A GB9469/39 A GB 9469/39A GB 946939 A GB946939 A GB 946939A GB 526731 A GB526731 A GB 526731A
Authority
GB
United Kingdom
Prior art keywords
magnesium
electrode
per cent
march
secondary emissive
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
GB9469/39A
Other languages
English (en)
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi Co Ltd
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 Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB526731A publication Critical patent/GB526731A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/12—Manufacture of electrodes or electrode systems of photo-emissive cathodes; of secondary-emission electrodes
    • H01J9/125—Manufacture of electrodes or electrode systems of photo-emissive cathodes; of secondary-emission electrodes of secondary emission electrodes
    • 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
    • H01J1/32—Secondary-electron-emitting electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2201/00—Electrodes common to discharge tubes
    • H01J2201/32—Secondary emission electrodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Cold Cathode And The Manufacture (AREA)
  • Photovoltaic Devices (AREA)
GB9469/39A 1938-03-25 1939-03-27 Improvements in secondary emissive electrodes Expired GB526731A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US197994A US2233276A (en) 1938-03-25 1938-03-25 Secondary electron emissive electrode

Publications (1)

Publication Number Publication Date
GB526731A true GB526731A (en) 1940-09-24

Family

ID=22731572

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9469/39A Expired GB526731A (en) 1938-03-25 1939-03-27 Improvements in secondary emissive electrodes

Country Status (4)

Country Link
US (1) US2233276A (enrdf_load_stackoverflow)
BE (1) BE433432A (enrdf_load_stackoverflow)
FR (1) FR851749A (enrdf_load_stackoverflow)
GB (1) GB526731A (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE519545A (enrdf_load_stackoverflow) * 1952-05-01
US3072816A (en) * 1959-08-05 1963-01-08 Landis & Gry A G Electrode device and method of producing the same
US3756682A (en) * 1967-02-13 1973-09-04 Schlumberger Technology Corp Method for outgassing permanent magnets

Also Published As

Publication number Publication date
US2233276A (en) 1941-02-25
BE433432A (enrdf_load_stackoverflow)
FR851749A (fr) 1940-01-13

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