GB853192A - Improvements in and relating to enclosed spark gaps - Google Patents

Improvements in and relating to enclosed spark gaps

Info

Publication number
GB853192A
GB853192A GB1038757A GB1038757A GB853192A GB 853192 A GB853192 A GB 853192A GB 1038757 A GB1038757 A GB 1038757A GB 1038757 A GB1038757 A GB 1038757A GB 853192 A GB853192 A GB 853192A
Authority
GB
United Kingdom
Prior art keywords
gap
march
electrodes
radio
active material
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
GB1038757A
Inventor
Clive Zbigniew Muskus
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB1038757A priority Critical patent/GB853192A/en
Publication of GB853192A publication Critical patent/GB853192A/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/02—Electron-emitting electrodes; Cathodes
    • H01J19/24—Cold cathodes, e.g. field-emissive cathode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0059—Arc discharge tubes

Abstract

853,192. Spark apparatus. BRITISH THOMSON-HOUSTON CO. Ltd. March 25, 1958 [March 29, 1957], No. 10387/57. Class 39(1). An enclosed spark gap has radio-active material 6 located in a recess formed in the lead 4 to one electrode 1 and communicating with the gap through an aperture 7. The radioactive material may be a thin disc of thorium or radium sulphate sandwiched between suitable metal sheets. The electrodes 1, 2 may be of tungsten or nickel and the leads 4, 5 of a nickelchrome alloy suitable for sealing to the glass envelope 3 which may be filled with hydrogen or a rare gas such as xenon. The radio-active material makes the breakdown voltage of the gap independent of ambient light conditions. The electrodes 1, 2 may be spaced at their opposing rims by an annular ceramic washer provided with apertures to permit the gas filling to enter the discharge gap.
GB1038757A 1957-03-29 1957-03-29 Improvements in and relating to enclosed spark gaps Expired GB853192A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1038757A GB853192A (en) 1957-03-29 1957-03-29 Improvements in and relating to enclosed spark gaps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1038757A GB853192A (en) 1957-03-29 1957-03-29 Improvements in and relating to enclosed spark gaps

Publications (1)

Publication Number Publication Date
GB853192A true GB853192A (en) 1960-11-02

Family

ID=9966905

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1038757A Expired GB853192A (en) 1957-03-29 1957-03-29 Improvements in and relating to enclosed spark gaps

Country Status (1)

Country Link
GB (1) GB853192A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3781719A (en) * 1971-09-01 1973-12-25 N Kuhlman Passive tr tubes
JPS50105372A (en) * 1974-01-28 1975-08-20
JPS5182566A (en) * 1975-01-17 1976-07-20 Meguro Denki Seizo Kk
US4475055A (en) * 1982-01-28 1984-10-02 The United States Of America As Represented By The United States Department Of Energy Spark gap device for precise switching
GB2200243A (en) * 1987-01-27 1988-07-27 English Electric Valve Co Ltd Overvoltage protection device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3781719A (en) * 1971-09-01 1973-12-25 N Kuhlman Passive tr tubes
JPS50105372A (en) * 1974-01-28 1975-08-20
JPS5182566A (en) * 1975-01-17 1976-07-20 Meguro Denki Seizo Kk
US4475055A (en) * 1982-01-28 1984-10-02 The United States Of America As Represented By The United States Department Of Energy Spark gap device for precise switching
GB2200243A (en) * 1987-01-27 1988-07-27 English Electric Valve Co Ltd Overvoltage protection device
GB2200243B (en) * 1987-01-27 1990-09-05 English Electric Valve Co Ltd Protection device

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