GB265990A - - Google Patents
Info
- Publication number
- GB265990A GB265990A GB3904/27A GB390427A GB265990A GB 265990 A GB265990 A GB 265990A GB 3904/27 A GB3904/27 A GB 3904/27A GB 390427 A GB390427 A GB 390427A GB 265990 A GB265990 A GB 265990A
- Authority
- GB
- United Kingdom
- Prior art keywords
- grid
- filament
- coil
- inductance
- capacity
- 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
- 230000004048 modification Effects 0.000 abstract 2
- 238000012986 modification Methods 0.000 abstract 2
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
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
- H03F1/14—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of neutralising means
- H03F1/16—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of neutralising means in discharge-tube amplifiers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
265,990. Somersalo, G. A. Feb. 11, 1926, [Convention date]. Thermionic amplifiers. -To eliminate inherent reaction in a high frequency amplifier, the ratio of the grid-filament capacity to the sum of the grid-filament and the grid-plate capacity is made equal to the ratio of the mutual inductance between coils 5, 7 to the self inductance of the coil 5. Fig. 1 shows an input circuit 4, T, connected to the grid 2 and through coil 7 and condenser 8 to the plate 1. The output inductance 5 is connected through the high tension battery to the filament 3, and a direct current path between the grid and filament is provided through a choke or resistance 13. A balance may be obtained by adjustment of condenser 10 in parallel with the grid-plate capacity, or by varying the coupling between coils 5, 7 to vary the mutual inductance. In a modification, Fig. 3, an additional coil 14 is provided so as to obtain a direct current path between the filament and grid; and in a further modification the coil 5 is replaced by a choke so. that the output is through coil 14.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US87606A US1633421A (en) | 1926-02-11 | 1926-02-11 | Means for preventing retrcactive effects in audion amplifier circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB265990A true GB265990A (en) | 1927-09-29 |
Family
ID=22206184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3904/27A Expired GB265990A (en) | 1926-02-11 | 1927-02-11 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1633421A (en) |
| GB (1) | GB265990A (en) |
-
1926
- 1926-02-11 US US87606A patent/US1633421A/en not_active Expired - Lifetime
-
1927
- 1927-02-11 GB GB3904/27A patent/GB265990A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1633421A (en) | 1927-06-21 |
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