GB760257A - Improvements in or relating to feed-back amplifiers - Google Patents

Improvements in or relating to feed-back amplifiers

Info

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
Application number
GB615554A
Inventor
Lawrence Dilger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
S Smith and Sons England Ltd
Original Assignee
S Smith and Sons England Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by S Smith and Sons England Ltd filed Critical S Smith and Sons England Ltd
Priority to GB615554A priority Critical patent/GB760257A/en
Publication of GB760257A publication Critical patent/GB760257A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F1/00Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/42Modifications of amplifiers to extend the bandwidth
    • H03F1/48Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers
    • H03F1/50Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers with tubes only

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.
GB615554A 1954-03-02 1954-03-02 Improvements in or relating to feed-back amplifiers Expired GB760257A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3058068A (en) * 1958-08-11 1962-10-09 Beckman Instruments Inc Clamping circuit for feedback amplifiers

Cited By (1)

* Cited by examiner, † Cited by third party
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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