GB528513A - Improvements in or relating to amplifying systems - Google Patents

Improvements in or relating to amplifying systems

Info

Publication number
GB528513A
GB528513A GB1278539A GB1278539A GB528513A GB 528513 A GB528513 A GB 528513A GB 1278539 A GB1278539 A GB 1278539A GB 1278539 A GB1278539 A GB 1278539A GB 528513 A GB528513 A GB 528513A
Authority
GB
United Kingdom
Prior art keywords
amplifiers
feed back
valve
over
fed
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
GB1278539A
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.)
PHILIP ROBERT THOMAS
RICHARD ADNEY MEERS
STC PLC
Original Assignee
PHILIP ROBERT THOMAS
RICHARD ADNEY MEERS
Standard Telephone and Cables PLC
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 PHILIP ROBERT THOMAS, RICHARD ADNEY MEERS, Standard Telephone and Cables PLC filed Critical PHILIP ROBERT THOMAS
Priority to GB1278539A priority Critical patent/GB528513A/en
Publication of GB528513A publication Critical patent/GB528513A/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

528,513. Valve amplifying circuits. STANDARD TELEPHONES & CABLES, Ltd., MEERS, R. A., and THOMAS, P. R. April 28, 1939, No. 12785. [Class 40 (v)] Negative feed back is provided on one or more of a group of amplifiers fed from a single input. As shown in Fig. 1 two amplifiers AA1 and AA2 are fed from a common main amplifier MA, the amplifiers employing valves as V1, V2 in push-pull. Negative feed back is provided over Cl, R3 and R1 from valve V1 and over C2 R4 and R2 from valve V2 and as this feed back is applied to the windings S1, S2 of the common input transformer T, it is applied to all the other amplifiers as AA2. As shown in Fig. 2 feed back is applied individually to the various amplifiers over balanced bridges such as R<SP>1</SP>, K<SP>1</SP>R<SP>1</SP>, K<SP>1</SP>RO<SP>1</SP> and R<SP>1</SP>O so that the feed back circuits of the various amplifiers may be of differing designs and may include attenuation networks which may or may not be frequency dependent.
GB1278539A 1939-04-28 1939-04-28 Improvements in or relating to amplifying systems Expired GB528513A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1278539A GB528513A (en) 1939-04-28 1939-04-28 Improvements in or relating to amplifying systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1278539A GB528513A (en) 1939-04-28 1939-04-28 Improvements in or relating to amplifying systems

Publications (1)

Publication Number Publication Date
GB528513A true GB528513A (en) 1940-10-31

Family

ID=10011071

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1278539A Expired GB528513A (en) 1939-04-28 1939-04-28 Improvements in or relating to amplifying systems

Country Status (1)

Country Link
GB (1) GB528513A (en)

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