GB482785A - Thermionic amplifiers - Google Patents
Thermionic amplifiersInfo
- Publication number
- GB482785A GB482785A GB9301/37A GB930137A GB482785A GB 482785 A GB482785 A GB 482785A GB 9301/37 A GB9301/37 A GB 9301/37A GB 930137 A GB930137 A GB 930137A GB 482785 A GB482785 A GB 482785A
- Authority
- GB
- United Kingdom
- Prior art keywords
- class
- stage
- feed
- april
- stages
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
482,785. Valve amplifying circuits. STANDARD TELEPHONES & CABLES, Ltd. April 1, 1937, No. 9301. Convention date, April 1, 1936. [Class 40 (v)] Comprises various arrangements in which one or more negative feed-back connections are made from a class B push-pull output stage to a previous stage in a cascade amplifier. Fig. 1 shows two class B stages in tandem with feed-back connections from the upper valve of the final pair to the lower valve of the preceding pair. Close coupling between chokes 31, 32 and primary windings 8, 8<1> reduces parallel-singing tendency. The arrangement neutralizes the gasping effect experienced in previous attempts to use class B stages in cascade. In other arrangements, a single feed-back connection is made from one end of the primary of the output transformers to a single sided stage which may immediately precede the class B stage, Fig. 3 (not shown), or may be separated from it by a single sided stage, Fig. 2 (not shown) or by a class B and a class A push-pull stage, Fig. 4 (not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US72145A US2103489A (en) | 1936-04-01 | 1936-04-01 | Amplifier circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB482785A true GB482785A (en) | 1938-04-05 |
Family
ID=22105864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9301/37A Expired GB482785A (en) | 1936-04-01 | 1937-04-01 | Thermionic amplifiers |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2103489A (en) |
| FR (1) | FR820453A (en) |
| GB (1) | GB482785A (en) |
Families Citing this family (1)
| 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 |
-
1936
- 1936-04-01 US US72145A patent/US2103489A/en not_active Expired - Lifetime
-
1937
- 1937-03-31 FR FR820453D patent/FR820453A/en not_active Expired
- 1937-04-01 GB GB9301/37A patent/GB482785A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2103489A (en) | 1937-12-28 |
| FR820453A (en) | 1937-11-12 |
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