GB788328A - Improvements in or relating to grid controlled gas-filled discharge tubes - Google Patents

Improvements in or relating to grid controlled gas-filled discharge tubes

Info

Publication number
GB788328A
GB788328A GB1892555A GB1892555A GB788328A GB 788328 A GB788328 A GB 788328A GB 1892555 A GB1892555 A GB 1892555A GB 1892555 A GB1892555 A GB 1892555A GB 788328 A GB788328 A GB 788328A
Authority
GB
United Kingdom
Prior art keywords
filled discharge
relating
discharge tubes
controlled gas
grid controlled
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
GB1892555A
Inventor
Ronald Ernest Lake
Hugh Menown
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.)
Teledyne UK Ltd
Original Assignee
English Electric Valve 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 English Electric Valve Co Ltd filed Critical English Electric Valve Co Ltd
Priority to GB1892555A priority Critical patent/GB788328A/en
Publication of GB788328A publication Critical patent/GB788328A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/50—Thermionic-cathode tubes
    • H01J17/52—Thermionic-cathode tubes with one cathode and one anode
    • H01J17/54—Thermionic-cathode tubes with one cathode and one anode having one or more control electrodes
    • H01J17/56—Thermionic-cathode tubes with one cathode and one anode having one or more control electrodes for preventing and then permitting ignition, but thereafter having no control

Landscapes

  • Microwave Tubes (AREA)
  • Solid Thermionic Cathode (AREA)
  • Electron Sources, Ion Sources (AREA)

Abstract

788,328. Thermionic valves. ENGLISH ELECTRIC VALVE CO., Ltd. May 4, 1956 [June 30, 1955], No. 18925/55. Class 39(1). A gas filled discharge tube having a main cathode 1 adapted to be heated by alternating current, a control grid 5 and an anode 7, is proving with an auxiliary cathode located out of the magnetic field produced by the application of current to the heater 2 and adapted to emit electrons when the tube is at normal operating temperature. As shown the auxiliary cathode comprises a layer 9 of emissive material on an annulus fitted into the end of the heat shield 8 encircling the main cathode 1.
GB1892555A 1955-06-30 1955-06-30 Improvements in or relating to grid controlled gas-filled discharge tubes Expired GB788328A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1892555A GB788328A (en) 1955-06-30 1955-06-30 Improvements in or relating to grid controlled gas-filled discharge tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1892555A GB788328A (en) 1955-06-30 1955-06-30 Improvements in or relating to grid controlled gas-filled discharge tubes

Publications (1)

Publication Number Publication Date
GB788328A true GB788328A (en) 1957-12-23

Family

ID=10120815

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1892555A Expired GB788328A (en) 1955-06-30 1955-06-30 Improvements in or relating to grid controlled gas-filled discharge tubes

Country Status (1)

Country Link
GB (1) GB788328A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4761794A (en) * 1984-12-22 1988-08-02 English Electric Valve Company Limited Thyratron having thermionic cathode material between anode and control grid
GB2297863A (en) * 1995-02-08 1996-08-14 Eev Ltd Gas discharge device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4761794A (en) * 1984-12-22 1988-08-02 English Electric Valve Company Limited Thyratron having thermionic cathode material between anode and control grid
GB2297863A (en) * 1995-02-08 1996-08-14 Eev Ltd Gas discharge device
GB2297863B (en) * 1995-02-08 1998-11-11 Eev Ltd Gas discharge device
US6049174A (en) * 1995-02-08 2000-04-11 Eev Limited High coulombic switch gas discharge device

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