GB535969A - Improvements in construction and arrangement of thermionic valves for high frequencyreception - Google Patents
Improvements in construction and arrangement of thermionic valves for high frequencyreceptionInfo
- Publication number
- GB535969A GB535969A GB27772/39A GB2777239A GB535969A GB 535969 A GB535969 A GB 535969A GB 27772/39 A GB27772/39 A GB 27772/39A GB 2777239 A GB2777239 A GB 2777239A GB 535969 A GB535969 A GB 535969A
- Authority
- GB
- United Kingdom
- Prior art keywords
- grid
- cathode
- conductance
- valve
- negative
- 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
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Details Of Valves (AREA)
- Amplifiers (AREA)
- Particle Accelerators (AREA)
Abstract
535,969. Thermionic valves and circuits therefor. HAZELTINE CORPORATION. Oct. 12, 1939, No. 27772. Convention date, Oct. 22, 1938. [Classes 39 (i) and 40 (v)] In order to diminish the effects of grid-cathode conductance in high-frequency reception it is provided that part of. the discharge takes place in a region of positive conductance and part in a region of negative conductance. These two regions may be formed in separate valves, but Fig. 6 shows an arrangement for producing them in a single valve. The valve comprises a cathode 35, anode 37 and control grid 36 of ordinary type, and between the grid 36 and the anode are a grid 38 connected to the cathode and a grid 40. Over part of the valve there also extends a grid 42 connected to the cathode and a grid 41 connected to the grid 40 and maintained at a position potential so as to produce a virtual cathode near the grid 36, which is stated to result in a negative grid-cathode conductance. Instead of the grids 41, 42 being concentrated at one end of the valve they may be distributed over it so as to form alternating regions of positive and negative conductance.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US236540A US2188504A (en) | 1938-10-22 | 1938-10-22 | High-frequency signal-translating stage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB535969A true GB535969A (en) | 1941-04-29 |
Family
ID=22889943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB27772/39A Expired GB535969A (en) | 1938-10-22 | 1939-10-12 | Improvements in construction and arrangement of thermionic valves for high frequencyreception |
Country Status (2)
| Country | Link |
|---|---|
| US (2) | US2188504A (en) |
| GB (1) | GB535969A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2577746A (en) * | 1944-11-11 | 1951-12-11 | William R Faust | Variable reactance decoupling circuit |
-
0
- US US22576D patent/USRE22576E/en not_active Expired
-
1938
- 1938-10-22 US US236540A patent/US2188504A/en not_active Expired - Lifetime
-
1939
- 1939-10-12 GB GB27772/39A patent/GB535969A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2188504A (en) | 1940-01-30 |
| USRE22576E (en) | 1944-12-12 |
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