GB501163A - Improvements in thermionic valve amplifiers and the like - Google Patents
Improvements in thermionic valve amplifiers and the likeInfo
- Publication number
- GB501163A GB501163A GB30760/37A GB3076037A GB501163A GB 501163 A GB501163 A GB 501163A GB 30760/37 A GB30760/37 A GB 30760/37A GB 3076037 A GB3076037 A GB 3076037A GB 501163 A GB501163 A GB 501163A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- coupling
- resistances
- nov
- curvature
- 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
- H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
- H03F1/36—Negative-feedback-circuit arrangements with or without positive feedback in discharge-tube amplifiers
Abstract
501,163. Valve amplifying circuits. SUDDEUTSCHE TELEFON - APPARATEKABEL-UND DRAHTWERKE AKT.-GES. TEKADE. Nov. 9, 1937, Nos. 30760 and 30761. Convention dates, Nov. 9, 1936 and Nov. 28, 1936. [Class 40 (v)] In a push-pull amplifier harmonic distortion is reduced by using both a positive and in addition a negative back-coupling. The Figure shows a push-pull pair of valves with in phase back-coupling from the anode of one valve to the grid of the other valve, the amount of which is controlled by resistances 43, 44. Negative back coupling for each valve is obtained by resistances 50, 51 and grid-bias is applied through resistances 52, 53, from resistance. condenser combinations in the cathode-leads. The positive and negative back-couplings may be so proportioned as to produce no overall change in amplification and may be such as to compensate for harmonic distortion due to curvature of the valve characteristics. Multigrid valves may be used and operated at such voltages as to give such a curvature of the characteristic that second harmonic can be compensated by the back-couplings while the third harmonic distortion is compensated by the curvature of the valve characteristic The Specification as open to inspection under Sect. 91 comprises also an arrangement, Fig. 1 (Cancelled) (not shown), in which positive back - coupling only was employed. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE501163X | 1936-11-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB501163A true GB501163A (en) | 1939-02-22 |
Family
ID=6545726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30760/37A Expired GB501163A (en) | 1936-11-09 | 1937-11-09 | Improvements in thermionic valve amplifiers and the like |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR828919A (en) |
| GB (1) | GB501163A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE743839C (en) * | 1938-09-01 | 1944-01-04 | Siemens Ag | Push-pull A amplifier circuit with negative feedback |
| DE743490C (en) * | 1939-07-19 | 1943-12-27 | Heinz Boucke | Circuit arrangement for reducing the non-linear distortion of an amplifier working with protective grille tubes |
-
1937
- 1937-11-09 GB GB30760/37A patent/GB501163A/en not_active Expired
- 1937-11-09 FR FR828919D patent/FR828919A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR828919A (en) | 1938-06-02 |
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