GB408328A - Improvements in vacuum electric tube devices or valves for use in particular gain control circuits - Google Patents
Improvements in vacuum electric tube devices or valves for use in particular gain control circuitsInfo
- Publication number
- GB408328A GB408328A GB240234A GB240234A GB408328A GB 408328 A GB408328 A GB 408328A GB 240234 A GB240234 A GB 240234A GB 240234 A GB240234 A GB 240234A GB 408328 A GB408328 A GB 408328A
- Authority
- GB
- United Kingdom
- Prior art keywords
- grid
- valve
- cathode
- anode
- grids
- 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
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G1/00—Details of arrangements for controlling amplification
- H03G1/04—Modifications of control circuit to reduce distortion caused by control
Landscapes
- Apparatus For Disinfection Or Sterilisation (AREA)
- Control Of Non-Electrical Variables (AREA)
Abstract
408,328. Thermionic valves. ROBINSON, E. Y., Garvary, Dryden Road, Bush Hill Park, Enfield, Middlesex, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House, Aldwych, London. July 4, 1932, Nos. 2402/34 and 2403/34. Divided on 408,256. Drawings to Specification. [Class 39 (i).] For use in the gain-control method and circuits described in Specification 408,256, a thermionic valve has at least four grids consecutively interposed between the cathode and the anode, the second and fourth or the third and fifth grids and no others being connected together within or as part of the manufactured valve, for example, within the valve envelope or cap. The cathode may be connected within the valve to a grid adjacent the anode. In a valve with the third and fifth grids connected together and acting as a self-oscillating, mixing valve in a supersonic heterodyne receiver, the second grid may be replaced by an auxiliary anode which may be formed by the usual grid-supporting rods. In a modified similarly acting valve, the auxiliary anode co-operates only with extensions of the cathode and first grid, the cathode being coated in two parts. The low-potential grid adjacent the cathode and used as input grid, or the gain-control grid, may be non-uniform. Stray field between the input grid and the anode may be reduced by passing their leads through remote parts of the bulb and by extensions of the shielding or other intervening grid. The details described are identical with those in Specification 408,256. Specifications 134,542, [Class 39 (i)], 380,429, 385,968, 407,317, and 408,330 also are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB240234A GB408328A (en) | 1932-07-04 | 1932-07-04 | Improvements in vacuum electric tube devices or valves for use in particular gain control circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB240234A GB408328A (en) | 1932-07-04 | 1932-07-04 | Improvements in vacuum electric tube devices or valves for use in particular gain control circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB408328A true GB408328A (en) | 1934-04-04 |
Family
ID=9738912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB240234A Expired GB408328A (en) | 1932-07-04 | 1932-07-04 | Improvements in vacuum electric tube devices or valves for use in particular gain control circuits |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB408328A (en) |
-
1932
- 1932-07-04 GB GB240234A patent/GB408328A/en not_active Expired
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