GB159472A - Improvements in and relating to thermionic amplifiers employing resistance couplings - Google Patents
Improvements in and relating to thermionic amplifiers employing resistance couplingsInfo
- Publication number
- GB159472A GB159472A GB6167/21A GB616721A GB159472A GB 159472 A GB159472 A GB 159472A GB 6167/21 A GB6167/21 A GB 6167/21A GB 616721 A GB616721 A GB 616721A GB 159472 A GB159472 A GB 159472A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- resistance
- grid
- energy
- signals
- 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
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/02—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with tubes only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
- Microwave Amplifiers (AREA)
Abstract
159,472. Loewe, S. Feb. 23, 1920, [Con vention date]. Thermionic amplifiers; undesired signals, eliminating or limiting.-In multivalve ther mionic amplifiers of the type in which energy is transferred from one valve to the next by a resistance coupling, the internal resistance of a three-electrode valve is used as a variable resistance coupling. Fig. 1 shows the invention applied to a wireless receiver. Energy received by a frame aerial 1 is amplified by valves 6, 13, which are coupled together by the plate-filament resistance of a valve 8. The resistance of the valve 8 is varied in accordance with the received energy, by controlling its grid potential by means of a transformer 10, the primary winding of which is connected to the grid of the valve 6, whilst the secondary winding is included in the grid circuit of the valve 8. In a modification, Fig. 2, the resistance of the valve 8 is varied at signal frequency by connecting the grid and filament across part of the inductance 14 of an independent oscillating circuit 14, 15, tuned to signal frequency. By this means, interference from disturbing signals of other frequencies is prevented- The device may also be applied to the amplification of signals in wireless and line telephony.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE159472X | 1920-02-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB159472A true GB159472A (en) | 1922-08-23 |
Family
ID=5680399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6167/21A Expired GB159472A (en) | 1920-02-23 | 1921-02-23 | Improvements in and relating to thermionic amplifiers employing resistance couplings |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB159472A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2783376A (en) * | 1950-10-03 | 1957-02-26 | Wilbur A Hane | High speed positive pulse generator |
-
1921
- 1921-02-23 GB GB6167/21A patent/GB159472A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2783376A (en) * | 1950-10-03 | 1957-02-26 | Wilbur A Hane | High speed positive pulse generator |
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