GB968712A - Improvements in or relating to amplifier circuits - Google Patents

Improvements in or relating to amplifier circuits

Info

Publication number
GB968712A
GB968712A GB3196261A GB3196261A GB968712A GB 968712 A GB968712 A GB 968712A GB 3196261 A GB3196261 A GB 3196261A GB 3196261 A GB3196261 A GB 3196261A GB 968712 A GB968712 A GB 968712A
Authority
GB
United Kingdom
Prior art keywords
amplifier
voltage
output
input
potentiometer
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
GB3196261A
Inventor
David Horace Chandler
Clifford Clarke
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi Co 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 Marconi Co Ltd filed Critical Marconi Co Ltd
Priority to GB3196261A priority Critical patent/GB968712A/en
Priority to SE9075/62A priority patent/SE309432B/xx
Priority to FR908796A priority patent/FR1334649A/en
Publication of GB968712A publication Critical patent/GB968712A/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

968,712. Valve amplifying circuits. MARCONI CO. Ltd. July 6, 1962 [Sept. 6, 19611, No. 31962/61. Heading H3W. In a negative feedback voltage amplifier distortion is reduced by producing a voltage dependent upon departure of the output from a fixed relationship to the input, amplifying the voltage so produced and combining it with the output from the main amplifier. Amplifier 3 is provided with negative feedback by means of series input resistor 1 and resistor 2 between amplifier input and output terminals, and a voltage dependent upon deviation of the output from linear relationship to the input is obtained by means of a potentiometer 4, 5 connected between input and output terminals. The voltage is taken from the tapping point of the potentiometer and amplified by a further phase reversing amplifier 23 which is linearized by means of negative feedback over resistor 22. The amplified and phase reversed voltage is combined with the output of the main amplifier by means of a resistive combining networks 6, 7. The further amplifier may alternatively be of the non-phase reversing type, in which the combining network is of a subtractive nature (Fig. 3, not shown). The arrangement may be taken further, the output voltage so first corrected being compared with the input by means of a second potentiometer and the error voltage so produced amplified in a third amplifier and combined in subtractive sense with the first corrected output (Fig. 4, not shown). Other forms of impedance may be used, e.g. resistors 2, 5 and 22 may be replaced by capacitors.
GB3196261A 1961-09-06 1961-09-06 Improvements in or relating to amplifier circuits Expired GB968712A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB3196261A GB968712A (en) 1961-09-06 1961-09-06 Improvements in or relating to amplifier circuits
SE9075/62A SE309432B (en) 1961-09-06 1962-08-21
FR908796A FR1334649A (en) 1961-09-06 1962-09-06 New high fidelity amplifier circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3196261A GB968712A (en) 1961-09-06 1961-09-06 Improvements in or relating to amplifier circuits

Publications (1)

Publication Number Publication Date
GB968712A true GB968712A (en) 1964-09-02

Family

ID=10330978

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3196261A Expired GB968712A (en) 1961-09-06 1961-09-06 Improvements in or relating to amplifier circuits

Country Status (1)

Country Link
GB (1) GB968712A (en)

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