GB820885A - Improvements in control electrodes for gas-filled electric discharge devices - Google Patents
Improvements in control electrodes for gas-filled electric discharge devicesInfo
- Publication number
- GB820885A GB820885A GB255455A GB255455A GB820885A GB 820885 A GB820885 A GB 820885A GB 255455 A GB255455 A GB 255455A GB 255455 A GB255455 A GB 255455A GB 820885 A GB820885 A GB 820885A
- Authority
- GB
- United Kingdom
- Prior art keywords
- area
- barrier
- gas
- slot
- electric discharge
- 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
- 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
- Lasers (AREA)
Abstract
820,885. Thermionic valves. BRITISH THOMSON-HOUSTON CO. Ltd. Jan. 19, 1956 [Jan. 27, 1955], No. 2554/55. Class 39(1). An arc discharge device has an apertured barrier acting as a control electrode, and a further baffle member between said barrier member and the cathode ; the aperture is in the form of a continuous slot distributed uniformly over the area of the barrier member, and having an area at least 25% more than the area of an annular slot of the same width. Fig. 6 shows the diagrammatic arrangement of anode 2, apertured barrier 4 (and 8), further baffle 4a, and cathode 1. The aperture may take the form of a spiral, Fig. 7, or an annular slot with radiating arms, Fig. 10, or may be given a " stepped " formation by projecting bars 23, 24, Fig. 13, The width of the slot is determined by the required control ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB255455A GB820885A (en) | 1955-01-27 | 1955-01-27 | Improvements in control electrodes for gas-filled electric discharge devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB255455A GB820885A (en) | 1955-01-27 | 1955-01-27 | Improvements in control electrodes for gas-filled electric discharge devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB820885A true GB820885A (en) | 1959-09-30 |
Family
ID=9741643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB255455A Expired GB820885A (en) | 1955-01-27 | 1955-01-27 | Improvements in control electrodes for gas-filled electric discharge devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB820885A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4890034A (en) * | 1986-06-21 | 1989-12-26 | English Electric Valve Company Limited | Thyratrons |
| GB2401989A (en) * | 2003-04-04 | 2004-11-24 | Thales Sa | Electron tube control grid |
-
1955
- 1955-01-27 GB GB255455A patent/GB820885A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4890034A (en) * | 1986-06-21 | 1989-12-26 | English Electric Valve Company Limited | Thyratrons |
| GB2401989A (en) * | 2003-04-04 | 2004-11-24 | Thales Sa | Electron tube control grid |
| GB2401989B (en) * | 2003-04-04 | 2006-04-19 | Thales Sa | Electron tube control grid |
| US7327077B2 (en) | 2003-04-04 | 2008-02-05 | Thales | Electron tube control grid |
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