GB853192A - Improvements in and relating to enclosed spark gaps - Google Patents
Improvements in and relating to enclosed spark gapsInfo
- 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
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
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
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.
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)
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 |
-
1957
- 1957-03-29 GB GB1038757A patent/GB853192A/en not_active Expired
Cited By (6)
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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