GB476394A - Improvements in grid electrodes of thermionic valves - Google Patents
Improvements in grid electrodes of thermionic valvesInfo
- Publication number
- GB476394A GB476394A GB1712836A GB1712836A GB476394A GB 476394 A GB476394 A GB 476394A GB 1712836 A GB1712836 A GB 1712836A GB 1712836 A GB1712836 A GB 1712836A GB 476394 A GB476394 A GB 476394A
- Authority
- GB
- United Kingdom
- Prior art keywords
- backbone
- shape
- massive
- thermionic valves
- channel
- 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
- H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
- H01J19/28—Non-electron-emitting electrodes; Screens
- H01J19/38—Control electrodes, e.g. grid
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
- H01J2893/0012—Constructional arrangements
- H01J2893/0015—Non-sealed electrodes
- H01J2893/0018—Bar or cage-like grids
Landscapes
- Solid Thermionic Cathode (AREA)
Abstract
476,394. Thermionic valves. DODDS, J. M., LUDLOW, J. H., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. June 19, 1936, No. 17128. [Class 39 (i)] A grid comprises a massive backbone member of channel shape and a grid mesh secured to the edges of the channel, the arrangement constituting a tube in which the cathode is located. The lead-in to the backbone is also massive and the inductance of the electrode is reduced. As shown, the refractory mesh portion 2 is bent into U-shape and has its ends held in a copper backbone 1. A space-charge electrode 6, as described in Specification 476,395 is interposed between the backbone 1 and the filament 4. The anode may be polyfoil in shape. The backbone may be water-cooled and the valve may be continuously evacuated and operate on television wavelengths. Specifications 389,509 and 414,753 also are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1712836A GB476394A (en) | 1936-06-19 | 1936-06-19 | Improvements in grid electrodes of thermionic valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1712836A GB476394A (en) | 1936-06-19 | 1936-06-19 | Improvements in grid electrodes of thermionic valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB476394A true GB476394A (en) | 1937-12-08 |
Family
ID=10089768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1712836A Expired GB476394A (en) | 1936-06-19 | 1936-06-19 | Improvements in grid electrodes of thermionic valves |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB476394A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2416799A (en) * | 1942-08-04 | 1947-03-04 | Western Electric Co | Electron discharge device |
-
1936
- 1936-06-19 GB GB1712836A patent/GB476394A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2416799A (en) * | 1942-08-04 | 1947-03-04 | Western Electric Co | Electron discharge device |
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