GB1178039A - Improvements in or relating to Feedback Amplifier Systems - Google Patents
Improvements in or relating to Feedback Amplifier SystemsInfo
- Publication number
- GB1178039A GB1178039A GB34206/67A GB3420667A GB1178039A GB 1178039 A GB1178039 A GB 1178039A GB 34206/67 A GB34206/67 A GB 34206/67A GB 3420667 A GB3420667 A GB 3420667A GB 1178039 A GB1178039 A GB 1178039A
- Authority
- GB
- United Kingdom
- Prior art keywords
- amplifier
- negative feedback
- impedance
- network
- input
- 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
- H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/28—Impedance matching networks
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/38—Impedance-matching networks
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
1,178,039. Negative feedback amplifying Circuits. SIEMENS A.G. 26 July, 1967 [27 July, 1966], No. 34206/67. Heading H3T. An amplifier is provided with a first negative feedback path comprising a two-terminal network # s in series with both the input and output circuits of the amplifier, and a second negative feedback path comprising a T-network # 1 , # 2 , # p connected in parallel with both input and output circuits of the amplifier. It is shown in the Specification that if the series arms # 1 , # 2 of the T-network are resistive and the shunt arm # p reactive, while the two terminal network # s comprises resistance and reactance in parallel, then by retaining relationships between these resistances and reactances which are laid down, either (1) with an arbitrary real output load impedance Za the input impedance W E of the amplifier can be made real; or alternatively (2) with an arbitrary real source impedance R g the output impedance W A of the amplifier can be made real. An amplifier stage of the first type may be followed by one of the second type by the interpostion of a buffer stage which may comprise a grounded-emitter transistor stage with negative feedback (Fig. 3, not shown).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES105029A DE1272998B (en) | 1966-07-27 | 1966-07-27 | Amplifier arrangement with parallel and series feedback from the output to the input |
| DES105024A DE1272997B (en) | 1966-07-27 | 1966-07-27 | Amplifier arrangement with parallel and series feedback from the output to the input |
| DES0108803 | 1967-03-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1178039A true GB1178039A (en) | 1970-01-14 |
Family
ID=27212983
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34206/67A Expired GB1178039A (en) | 1966-07-27 | 1967-07-26 | Improvements in or relating to Feedback Amplifier Systems |
| GB61505/68A Expired GB1180200A (en) | 1966-07-27 | 1967-07-26 | Improvements in or relating to Feedback Amplifier Systems |
| GB61506/68A Expired GB1179520A (en) | 1966-07-27 | 1967-07-26 | Improvements in or relating to Feedback Amplifier Systems |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB61505/68A Expired GB1180200A (en) | 1966-07-27 | 1967-07-26 | Improvements in or relating to Feedback Amplifier Systems |
| GB61506/68A Expired GB1179520A (en) | 1966-07-27 | 1967-07-26 | Improvements in or relating to Feedback Amplifier Systems |
Country Status (7)
| Country | Link |
|---|---|
| AT (2) | AT285676B (en) |
| BE (1) | BE701911A (en) |
| DE (3) | DE1272997B (en) |
| GB (3) | GB1178039A (en) |
| NL (1) | NL148460B (en) |
| SE (1) | SE343737B (en) |
| YU (1) | YU35410B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3972002A (en) * | 1974-12-30 | 1976-07-27 | Bell Telephone Laboratories, Incorporated | Dual feedback amplifier |
-
1966
- 1966-07-27 DE DES105024A patent/DE1272997B/en not_active Withdrawn
- 1966-07-27 DE DES105029A patent/DE1272998B/en not_active Withdrawn
-
1967
- 1967-03-14 DE DE19671512765 patent/DE1512765A1/en active Pending
- 1967-07-17 NL NL676709907A patent/NL148460B/en unknown
- 1967-07-24 AT AT685567A patent/AT285676B/en active
- 1967-07-24 AT AT07607/68A patent/AT279673B/en not_active IP Right Cessation
- 1967-07-24 YU YU1476/67A patent/YU35410B/en unknown
- 1967-07-26 GB GB34206/67A patent/GB1178039A/en not_active Expired
- 1967-07-26 GB GB61505/68A patent/GB1180200A/en not_active Expired
- 1967-07-26 SE SE10870/67*A patent/SE343737B/xx unknown
- 1967-07-26 GB GB61506/68A patent/GB1179520A/en not_active Expired
- 1967-07-27 BE BE701911D patent/BE701911A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AT285676B (en) | 1970-11-10 |
| DE1512765A1 (en) | 1969-08-14 |
| YU147667A (en) | 1980-06-30 |
| SE343737B (en) | 1972-03-13 |
| NL148460B (en) | 1976-01-15 |
| GB1179520A (en) | 1970-01-28 |
| DE1272998B (en) | 1968-07-18 |
| NL6709907A (en) | 1968-01-29 |
| GB1180200A (en) | 1970-02-04 |
| BE701911A (en) | 1968-01-29 |
| DE1272997B (en) | 1968-07-18 |
| YU35410B (en) | 1980-12-31 |
| AT279673B (en) | 1970-03-10 |
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