GB484102A - Improvements in or relating to wave amplifying systems - Google Patents

Improvements in or relating to wave amplifying systems

Info

Publication number
GB484102A
GB484102A GB2955336A GB2955336A GB484102A GB 484102 A GB484102 A GB 484102A GB 2955336 A GB2955336 A GB 2955336A GB 2955336 A GB2955336 A GB 2955336A GB 484102 A GB484102 A GB 484102A
Authority
GB
United Kingdom
Prior art keywords
output
input
cathode
resistances
valve
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
GB2955336A
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.)
STC PLC
Original Assignee
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB2955336A priority Critical patent/GB484102A/en
Priority to FR828510D priority patent/FR828510A/en
Publication of GB484102A publication Critical patent/GB484102A/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

Abstract

484,102. Valve amplifying circuits. STANDARD TELEPHONES & CABLES, Ltd., and ROCHE, A. H. Oct. 30, 1936, No. 29553. [Class 40 (v)] In a negative feed-back amplifier in which the input and output are substantially in phase a resistance having its ends connected to the cathode and ground is employed and arranged in series with the input or output impedance of the amplifier. A further resistance is connected between the grounded cathode and the output or input impedance and a condenser is connected directly between the ungrounded terminals of the resistances. Fig. 1 shows resistances R9, RIO in series with the input and output impedances and a feed-back condenser C8. Fig. 3 shows a bridge in the output R11, R12, R13 with the load across one diagonal and the feedback path across the other diagonal. In a modification, Fig. 2 (not shown) one side of the input circuit and the cathode of the second valve is earthed instead of the junction of resistances R11, R12 and the cathode of the first valve.
GB2955336A 1936-10-30 1936-10-30 Improvements in or relating to wave amplifying systems Expired GB484102A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2955336A GB484102A (en) 1936-10-30 1936-10-30 Improvements in or relating to wave amplifying systems
FR828510D FR828510A (en) 1936-10-30 1937-10-29 Development of negative feedback amplifiers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2955336A GB484102A (en) 1936-10-30 1936-10-30 Improvements in or relating to wave amplifying systems

Publications (1)

Publication Number Publication Date
GB484102A true GB484102A (en) 1938-05-02

Family

ID=10293353

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2955336A Expired GB484102A (en) 1936-10-30 1936-10-30 Improvements in or relating to wave amplifying systems

Country Status (2)

Country Link
FR (1) FR828510A (en)
GB (1) GB484102A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2475547A (en) * 1943-12-14 1949-07-05 Automatic Elect Lab Thermionic valve amplifier
DE848661C (en) * 1950-02-09 1952-09-08 Telefunken Gmbh Amplifier with negative feedback
DE19647875A1 (en) * 1996-11-19 1998-05-20 Anthonie Theador Barmentloo Electronic circuit for acoustic signals converted into electric signal

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2475547A (en) * 1943-12-14 1949-07-05 Automatic Elect Lab Thermionic valve amplifier
DE848661C (en) * 1950-02-09 1952-09-08 Telefunken Gmbh Amplifier with negative feedback
DE19647875A1 (en) * 1996-11-19 1998-05-20 Anthonie Theador Barmentloo Electronic circuit for acoustic signals converted into electric signal

Also Published As

Publication number Publication date
FR828510A (en) 1938-05-19

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