GB824055A - Improvements in electron discharge devices - Google Patents
Improvements in electron discharge devicesInfo
- Publication number
- GB824055A GB824055A GB22168/57A GB2216857A GB824055A GB 824055 A GB824055 A GB 824055A GB 22168/57 A GB22168/57 A GB 22168/57A GB 2216857 A GB2216857 A GB 2216857A GB 824055 A GB824055 A GB 824055A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wires
- cathode
- grid
- parallel
- variable
- 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
- H01J21/00—Vacuum tubes
- H01J21/02—Tubes with a single discharge path
Landscapes
- Microwave Tubes (AREA)
Abstract
824,055. Thermionic valves. MACHLETT LABORATORIES Inc. July 12, 1957 [Aug. 13, 1956], No. 22168/57. Class 39(1). In a discharge tube in which a low amplification factor, i.e. between 3 and 10, is required, the grid has a plurality of parallel wires which are also parallel to the anode and cathode, the wires being spaced apart sufficiently widely to produce a variable mu across the cathode, and the effectively emitting portions of the cathode are restricted to the areas thereof where the mu is relatively low. In the arrangement of Fig. 2, both grid and cathode are formed of a series of separate wires, respectively 18 and 33. The spacing between the grid wires is considerably greater than the grid-cathode spacing, so that a variable mu effect between adjacent grid wires is obtained, Figs. 4 and 5 (not shown). As shown, the cathode wires 33 are located midway between the grid wires, where the mu is at a minimum, there being no emissive portion in the higher mu areas adjacent the grid wires. In the alternative arrangement of Fig. 6, the cathode 38 has emissive strips 41 lying between and parallel to the grid wires 40. The completed tube may be constructed as in Fig. 1 (not shown.)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US824055XA | 1956-08-13 | 1956-08-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB824055A true GB824055A (en) | 1959-11-25 |
Family
ID=22170993
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB22168/57A Expired GB824055A (en) | 1956-08-13 | 1957-07-12 | Improvements in electron discharge devices |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB824055A (en) |
-
1957
- 1957-07-12 GB GB22168/57A patent/GB824055A/en not_active Expired
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