GB950466A - Improvements in or relating to thermionic valves - Google Patents
Improvements in or relating to thermionic valvesInfo
- Publication number
- GB950466A GB950466A GB1627460A GB1627460A GB950466A GB 950466 A GB950466 A GB 950466A GB 1627460 A GB1627460 A GB 1627460A GB 1627460 A GB1627460 A GB 1627460A GB 950466 A GB950466 A GB 950466A
- Authority
- GB
- United Kingdom
- Prior art keywords
- grid
- straps
- cathode
- electrodes
- screen
- 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
- Hybrid Cells (AREA)
Abstract
950,466. Thermionic valves. STANDARD TELEPHONES & CABLES Ltd. May 9, 1960, No. 16274/60. Heading H1D. In a thermionic valve comprising a cathode 8, Fig. 3, surrounded by a grid 9 and at least one further electrode 10, adapted for assembly by passing each electrode over or into another, the grid comprises a wire wound under tension, about two side rods 1 which are spaced at their ends by straps 2, 7. At one end the cathode and the side rods are reduced in thickness to accommodate the .straps 7, and the spacing between the grid winding and the active portions of the surrounding electrode is less than the thickness of a strap, e.g. 0.008 inch. As shown, the electrodes are mounted between mica bridges 12, 13 centred with respect to the envelope by means of rods 14 and mica discs 15. The straps 20 of the screen grid 10 are bowed outwardly to accommodate the straps 2 of the control grid 9. Lugs 22 on the anode 11 lock the bridge pieces in place relative to the electrodes. Suitable dimensions and spacings for the electrodes are given. In particular the cathode and control and screen grids may be spaced a distance of 0.003 and 0.007 inch respectively. The screen grid operating voltage is 50 v. and the amplification factor of, the valve is 19.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1627460A GB950466A (en) | 1960-05-09 | 1960-05-09 | Improvements in or relating to thermionic valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1627460A GB950466A (en) | 1960-05-09 | 1960-05-09 | Improvements in or relating to thermionic valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB950466A true GB950466A (en) | 1964-02-26 |
Family
ID=10074363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1627460A Expired GB950466A (en) | 1960-05-09 | 1960-05-09 | Improvements in or relating to thermionic valves |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB950466A (en) |
-
1960
- 1960-05-09 GB GB1627460A patent/GB950466A/en not_active Expired
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