GB372758A - Improvements in and relating to thermionic valves - Google Patents
Improvements in and relating to thermionic valvesInfo
- Publication number
- GB372758A GB372758A GB1223532A GB1223532A GB372758A GB 372758 A GB372758 A GB 372758A GB 1223532 A GB1223532 A GB 1223532A GB 1223532 A GB1223532 A GB 1223532A GB 372758 A GB372758 A GB 372758A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- grid
- anode
- insulation
- coated
- 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
- H01J19/42—Mounting, supporting, spacing, or insulating of electrodes or of electrode assemblies
-
- 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
- H01J2893/0002—Construction arrangements of electrode systems
Landscapes
- Electrolytic Production Of Metals (AREA)
Abstract
372,758. Thermionic valves. FREEDMAN, P., 6, Hillside Gardens, Highgate, London. Feb. 4, 1931, No. 12235/32. Divided on 372,393. [Class 39 (i).] A grid is spaced from a cathode or other electrode by a separate insulating partition having a number of passages, whereby close spacing of the electrodes is obtained. The partitions may consist of expanded metal, wire gauze, or a similar metal structure, coated with an insulating material such as magnesia or thoria, or it may be formed entirely of insulating material. As shown in Fig. 2, the grid, consisting of a number of strips 15, 16, is spaced from a filament cathode 12, and from an anode 17 by partitions 28, 32 consisting of perforated metal sheets covered with insulation. In the valve shown in Fig. 4, a grid 39 is spaced from an anode 42 by metal gauze 43 coated with insulation, and from an indirectly-heated cathode 37 by a helical wire 40, which is coated with insulation and is rendered integral with the cathode. The partition between the grid and anode may be connected with the cathode so as to reduce capacity, or a separate potential may be applied to it. The valve may have two grids.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1223532A GB372758A (en) | 1931-02-04 | 1931-02-04 | Improvements in and relating to thermionic valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1223532A GB372758A (en) | 1931-02-04 | 1931-02-04 | Improvements in and relating to thermionic valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB372758A true GB372758A (en) | 1932-05-04 |
Family
ID=10000839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1223532A Expired GB372758A (en) | 1931-02-04 | 1931-02-04 | Improvements in and relating to thermionic valves |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB372758A (en) |
-
1931
- 1931-02-04 GB GB1223532A patent/GB372758A/en not_active Expired
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