GB388067A - Improvements in or relating to high frequency electrical oscillatory systems - Google Patents
Improvements in or relating to high frequency electrical oscillatory systemsInfo
- Publication number
- GB388067A GB388067A GB2328331A GB2328331A GB388067A GB 388067 A GB388067 A GB 388067A GB 2328331 A GB2328331 A GB 2328331A GB 2328331 A GB2328331 A GB 2328331A GB 388067 A GB388067 A GB 388067A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- parasitic
- condenser
- class
- coil
- 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
- 230000003534 oscillatory effect Effects 0.000 title abstract 3
- 230000010355 oscillation Effects 0.000 abstract 2
- 230000003071 parasitic effect Effects 0.000 abstract 2
- 230000002141 anti-parasite Effects 0.000 abstract 1
- 239000003096 antiparasitic agent Substances 0.000 abstract 1
- 238000013016 damping Methods 0.000 abstract 1
- 230000011664 signaling Effects 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
- Oscillators With Electromechanical Resonators (AREA)
Abstract
388,067. Valve amplifying circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London, GREEN, E., Penrose, Long Stomps, Chelmsford, and ROBB, F. G., 8, West Belvedere Road, Danbury, both in Essex. Aug. 18, 1931, No. 23283. [Class 40 (v).] Parasitic oscillations of harmonic frequency, due in part to the interelectrode capacities of the valve, are eliminated by inserting an adjustable reactance, such as the coil 6, Fig. 1, connected in series with a condenser 5 between the grid of the amplifier 1 and the end of the main oscillatory circuit 3, 4 remote from the anode. The inductance 6, which may be shunted by a condenser and damping resistance, is adjusted so that the parasitic frequency does not coincide with any harmonic frequency of the main oscillation circuit. In Fig. 3 two amplifiers 1, 1<1> are energized in push-pull from a " drive " coil 2<1>, and feed a centre-tapped output circuit 3, 4, the anti-parasitic coils 6, 6<1> being connected as shown. In Fig. 4, the eliminating circuit 10, 11 is separate from but coupled equally to both grids, either through the leads, as shown, or through coupling-coils, in order to prevent any retroaction on the main oscillatory circuit 3, 4. Specifications 148,445, 148,447, 241,289, 270,800, and 313,111, [all in Class 40 (v), Wireless signalling &c.], are referred to.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2328331A GB388067A (en) | 1931-08-18 | 1931-08-18 | Improvements in or relating to high frequency electrical oscillatory systems |
| DEM120797D DE606151C (en) | 1931-08-18 | 1932-08-19 | Circuit for eliminating interference waves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2328331A GB388067A (en) | 1931-08-18 | 1931-08-18 | Improvements in or relating to high frequency electrical oscillatory systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB388067A true GB388067A (en) | 1933-02-20 |
Family
ID=10193153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2328331A Expired GB388067A (en) | 1931-08-18 | 1931-08-18 | Improvements in or relating to high frequency electrical oscillatory systems |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE606151C (en) |
| GB (1) | GB388067A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1001340B (en) * | 1954-01-11 | 1957-01-24 | Koerting Radio Werke G M B H | High frequency generator |
-
1931
- 1931-08-18 GB GB2328331A patent/GB388067A/en not_active Expired
-
1932
- 1932-08-19 DE DEM120797D patent/DE606151C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE606151C (en) | 1934-11-26 |
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