GB540630A - Negative feedback amplifier - Google Patents
Negative feedback amplifierInfo
- Publication number
- GB540630A GB540630A GB11830/40A GB1183040A GB540630A GB 540630 A GB540630 A GB 540630A GB 11830/40 A GB11830/40 A GB 11830/40A GB 1183040 A GB1183040 A GB 1183040A GB 540630 A GB540630 A GB 540630A
- Authority
- GB
- United Kingdom
- Prior art keywords
- amplifier
- negative feedback
- coupling network
- input
- singing
- 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
-
- 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
- H03F1/42—Modifications of amplifiers to extend the bandwidth
- H03F1/48—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers
- H03F1/50—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers with tubes only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
540,630. Valve amplifying circuits. STANDARD TELEPHONES & CABLES, Ltd. July 18, 1940, No. 11830. Convention date, Oct. 12, 1939. [Class 40 (v)] In a multi-stage amplifier having a negative feedback connection between the output and the input the interstage coupling network includes elements giving resonance points at two frequencies where there is a tendency to singing. Fig. 1 shows a network 34, 35, 36 common to the input and output circuits of stages 1 and 3. The coupling network L 1 , L 2 , C 2 , L 3 , C 3 and condenser 42 and leak 45 produce a phase adjustment to prevent singing at frequencies near the cut-off point and slightly above the transmitting range of the amplifier. A shield may surround elements 42, C 2 , L 1 , L 2 and be connected to the junction of L 2 , L,. The coupling network may be introduced into any stage of the amplifier or may be arranged in the negative feedback path or may be divided between these positions. The Specification gives curves showing the gain and phase changes occurring in an amplifier. Specification 514,567 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US299065A US2231374A (en) | 1939-10-12 | 1939-10-12 | Negative feedback amplifier |
Publications (1)
Publication Number | Publication Date |
---|---|
GB540630A true GB540630A (en) | 1941-10-23 |
Family
ID=23153168
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB11830/40A Expired GB540630A (en) | 1939-10-12 | 1940-07-18 | Negative feedback amplifier |
Country Status (5)
Country | Link |
---|---|
US (1) | US2231374A (en) |
BE (1) | BE441790A (en) |
FR (1) | FR870440A (en) |
GB (1) | GB540630A (en) |
NL (2) | NL108864B (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB575639A (en) * | 1943-12-14 | 1946-02-27 | Bertram Morton Hadfield | Improvements in or relating to thermionic valve amplifiers |
US2428363A (en) * | 1944-07-26 | 1947-10-07 | Bell Telephone Labor Inc | Negative feed-back amplifier |
US2692377A (en) * | 1946-01-16 | 1954-10-19 | Jr George A Brettell | Position plotter |
US2658958A (en) * | 1949-07-16 | 1953-11-10 | Wilcox Gay Corp | Negative feedback frequency response compensation amplifier system |
US2865986A (en) * | 1953-08-03 | 1958-12-23 | Louis W Parker | High power frequency discriminator |
US3443096A (en) * | 1964-02-29 | 1969-05-06 | Hitachi Ltd | Circuit arrangement for use in radiation measurements and the like purposes |
-
1939
- 1939-10-12 US US299065A patent/US2231374A/en not_active Expired - Lifetime
-
1940
- 1940-07-18 GB GB11830/40A patent/GB540630A/en not_active Expired
-
1941
- 1941-02-27 FR FR870440D patent/FR870440A/en not_active Expired
- 1941-06-19 BE BE441790D patent/BE441790A/xx unknown
-
1942
- 1942-12-10 NL NL108864D patent/NL108864B/xx unknown
- 1942-12-10 NL NL108864A patent/NL69414C/xx active
Also Published As
Publication number | Publication date |
---|---|
FR870440A (en) | 1942-03-11 |
NL108864B (en) | |
BE441790A (en) | 1941-07-31 |
NL69414C (en) | 1952-02-15 |
US2231374A (en) | 1941-02-11 |
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