GB729827A - Improvements in or relating to feedback amplifiers - Google Patents

Improvements in or relating to feedback amplifiers

Info

Publication number
GB729827A
GB729827A GB2156152A GB2156152A GB729827A GB 729827 A GB729827 A GB 729827A GB 2156152 A GB2156152 A GB 2156152A GB 2156152 A GB2156152 A GB 2156152A GB 729827 A GB729827 A GB 729827A
Authority
GB
United Kingdom
Prior art keywords
feedback
amplifier
loop
loops
aug
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
GB2156152A
Inventor
John Lawton
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.)
British Telecommunications PLC
British Telecommunications Research Ltd
Original Assignee
British Telecommunications PLC
British Telecommunications Research 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 British Telecommunications PLC, British Telecommunications Research Ltd filed Critical British Telecommunications PLC
Priority to GB2156152A priority Critical patent/GB729827A/en
Publication of GB729827A publication Critical patent/GB729827A/en
Expired legal-status Critical Current

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

729,827. Valve amplifying circuits. BRITISH TELECOMMUNICATIONS RESEARCH, Ltd. Aug. 6, 1953 [Aug; 27, 1952], No. 21561/52. Class 40 (6). A multi-stage feedback amplifier is provided with two negative feedback loops, the final amplifier stages being included in both loops: the circuit parameters are so chosen that the loop gain of the outer feedback loop is substantially unity in the region of the cut-off frequency of the inner loop. The Specification gives a mathematical demonstration, showing that an amplifier designed in this manner can provide a greater bandwidth for a given degree of stability and feedback on the final stages, as compared with a single-loop amplifier; alternatively, a greater amount of feedback is permissible. The extension to amplifiers with three or more loops is also envisaged.
GB2156152A 1952-08-27 1952-08-27 Improvements in or relating to feedback amplifiers Expired GB729827A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2156152A GB729827A (en) 1952-08-27 1952-08-27 Improvements in or relating to feedback amplifiers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2156152A GB729827A (en) 1952-08-27 1952-08-27 Improvements in or relating to feedback amplifiers

Publications (1)

Publication Number Publication Date
GB729827A true GB729827A (en) 1955-05-11

Family

ID=10164981

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2156152A Expired GB729827A (en) 1952-08-27 1952-08-27 Improvements in or relating to feedback amplifiers

Country Status (1)

Country Link
GB (1) GB729827A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4243943A (en) * 1978-02-01 1981-01-06 Monash University Feedback systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4243943A (en) * 1978-02-01 1981-01-06 Monash University Feedback systems

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