GB760257A - Improvements in or relating to feed-back amplifiers - Google Patents
Improvements in or relating to feed-back amplifiersInfo
- Publication number
- GB760257A GB760257A GB615554A GB615554A GB760257A GB 760257 A GB760257 A GB 760257A GB 615554 A GB615554 A GB 615554A GB 615554 A GB615554 A GB 615554A GB 760257 A GB760257 A GB 760257A
- Authority
- GB
- United Kingdom
- Prior art keywords
- grid
- valve
- signals
- impedance
- earth
- 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
- H03F1/42—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
760,257. Non-linear discharge tube circuits. SMITH & SONS (ENGLAND), Ltd., S. March 24, 1955 [March 2, 1954], No. 6155/54. Class 40(6) In a negative feed back amplifier for amplifying signals between predetermined limits, and having a capacitor in the feed back loop, a non-linear impedance is connected between the input terminals having high impedence for signals between the predetermined limits and lower impedance for larger signals. The circuit is described as applied to a Miller integrator, the input being applied between terminal 3 and earth over resistor 4 to the grid of cathodefollower valve 5, feeding -a grounded grid stage which in turn feeds the pentode amplifier 7. A connection is made from the anode to the cathode-follower output valve 8, a capacitor 15 being connected between the cathode and the grid of valve 5. Two germanium diodes 16, 17 are connected between the grid of valve 5 and earth, the combination having high impedance for small signals and low impedance for larger signals, Fig. 2 (not shown). The diodes also prevent the potential of the grid of valve 5 from varying appreciably from earth. Networks 13, 14 are included to maintain the amplifier response. Output may be taken from the potentiometer 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB615554A GB760257A (en) | 1954-03-02 | 1954-03-02 | Improvements in or relating to feed-back amplifiers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB615554A GB760257A (en) | 1954-03-02 | 1954-03-02 | Improvements in or relating to feed-back amplifiers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB760257A true GB760257A (en) | 1956-10-31 |
Family
ID=9809413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB615554A Expired GB760257A (en) | 1954-03-02 | 1954-03-02 | Improvements in or relating to feed-back amplifiers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB760257A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3058068A (en) * | 1958-08-11 | 1962-10-09 | Beckman Instruments Inc | Clamping circuit for feedback amplifiers |
-
1954
- 1954-03-02 GB GB615554A patent/GB760257A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3058068A (en) * | 1958-08-11 | 1962-10-09 | Beckman Instruments Inc | Clamping circuit for feedback amplifiers |
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