GB408330A - 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
- GB408330A GB408330A GB974734A GB974734A GB408330A GB 408330 A GB408330 A GB 408330A GB 974734 A GB974734 A GB 974734A GB 974734 A GB974734 A GB 974734A GB 408330 A GB408330 A GB 408330A
- Authority
- GB
- United Kingdom
- Prior art keywords
- grid
- anode
- cathode
- valve
- stray field
- 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
- X-Ray Techniques (AREA)
Abstract
408,330. 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. 9747/34 and 9748/34. 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 having a cathode surrounded by four or five successive grids and an anode is provided with means additional to the intervening grids for reducing the stray field between the input grid and the anode. The input grid is the first or third from the cathode in a fourgrid valve and the first or fourth in a five-grid valve. In each case, a further grid connected to the cathode may be inserted between the outer grid and the anode. To reduce the stray field, the lead-wires to the input grid and anode may lead out through remote parts of the bulb and screens or extensions may be provided on the screening or other intervening grid. The input grid next to the cathode and the gaincontrol grid are operated independently and may be non-uniform. When the valve is used as a frequency changer in supersonic heterodyne reception, reduction of stray field reduce the tendency to locking of circuits and radiation of the heterodyne signal. The details described are identical with those in Specification 408,256. Specifications 303,082, [Class 39 (i)], 380,429, 385,968, 407,317, and 408,328 also are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB974734A GB408330A (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 |
|---|---|---|---|
| GB974734A GB408330A (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 |
|---|---|
| GB408330A true GB408330A (en) | 1934-04-04 |
Family
ID=9877985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB974734A Expired GB408330A (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) | GB408330A (en) |
-
1932
- 1932-07-04 GB GB974734A patent/GB408330A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB408330A (en) | Improvements in vacuum electric tube devices or valves for use in particular gain control circuits | |
| GB649786A (en) | Improvements in or relating to circuit arrangements for amplifying and separating two or more oscillations | |
| GB499487A (en) | Improvements in or relating to electron discharge devices for voltage amplification or control | |
| US2063195A (en) | Photoamplifier arrangement | |
| GB408328A (en) | Improvements in vacuum electric tube devices or valves for use in particular gain control circuits | |
| GB421287A (en) | Improvements in thermionic valves and valve circuits | |
| US1867577A (en) | Amplifier | |
| US2006099A (en) | Audion amplifier | |
| GB471672A (en) | Improvements in or relating to electron discharge devices | |
| GB521424A (en) | Improvements in or relating to circuit arrangements employing thermionic valves and thermionic valves therefor | |
| GB629882A (en) | Improvements in amplifying circuits for ultra-short waves | |
| GB487674A (en) | Improvements in or relating to electron discharge devices | |
| GB521872A (en) | Improvements relating to thermionic valve circuits | |
| GB535277A (en) | Improvements relating to electron discharge tubes | |
| GB458066A (en) | Improvements in multiple-electrode electron discharge tubes | |
| GB552760A (en) | Improvements in or relating to amplifying circuits for ultra-short waves | |
| GB431889A (en) | Improvements in or relating to gas or vapour filled electric discharge devices | |
| GB525402A (en) | Electronic amplifier | |
| GB489486A (en) | Improvements in frequency changers for heterodyne receivers and modulators | |
| GB519330A (en) | Improvements relating to cathode ray tube systems | |
| GB500828A (en) | Improvements in radio receiving apparatus | |
| GB531977A (en) | Improvements relating to very high frequency electron discharge apparatus | |
| GB397612A (en) | Two-stage thermionic valve | |
| GB716684A (en) | Electron tubes | |
| GB652996A (en) | Mounts for electron discharge devices |