GB916971A - Improvements relating to thermionic valves - Google Patents
Improvements relating to thermionic valvesInfo
- Publication number
- GB916971A GB916971A GB885659A GB885659A GB916971A GB 916971 A GB916971 A GB 916971A GB 885659 A GB885659 A GB 885659A GB 885659 A GB885659 A GB 885659A GB 916971 A GB916971 A GB 916971A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plate
- shield
- tabs
- march
- apertures
- 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
- H01J2893/0016—Planar grids
Landscapes
- Electron Tubes For Measurement (AREA)
Abstract
916,971. Thermionic valves. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. March 2, 1960 [March 13, 1959], No. 8856/59. Class 39 (1). In a thermionic valve comprising electrodes having ends fitting into apertures in upper and lower insulating cross-plates 2, a metallic shield 8 is mounted on the top face of the upper insulating plate and extends over the ends of the electrodes so as to screen the upper end of the valve envelope, in which is mounted a top anode connection, from electrons passing through apertures in the insulating plate, and thereby avoid spurious signals in the anode circuit. The shield 8 is also provided with tabs 13 extending downwardly through plate 2 to minimize the escape of electrons from the underside of the plate 2. The shield 8 may be located by lugs 9-11 extending through the plate 2 from the beamforming electrode of a tetrode, Fig. 1 (not shown), and the tabs 13 preferably engage this electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB885659A GB916971A (en) | 1959-03-13 | 1959-03-13 | Improvements relating to thermionic valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB885659A GB916971A (en) | 1959-03-13 | 1959-03-13 | Improvements relating to thermionic valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB916971A true GB916971A (en) | 1963-01-30 |
Family
ID=9860577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB885659A Expired GB916971A (en) | 1959-03-13 | 1959-03-13 | Improvements relating to thermionic valves |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB916971A (en) |
-
1959
- 1959-03-13 GB GB885659A patent/GB916971A/en not_active Expired
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