GB479808A - Improvements in thermionic amplifiers - Google Patents

Improvements in thermionic amplifiers

Info

Publication number
GB479808A
GB479808A GB9300/37A GB930037A GB479808A GB 479808 A GB479808 A GB 479808A GB 9300/37 A GB9300/37 A GB 9300/37A GB 930037 A GB930037 A GB 930037A GB 479808 A GB479808 A GB 479808A
Authority
GB
United Kingdom
Prior art keywords
changes
linear resistance
april
diagonal
discharge path
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
GB9300/37A
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
Publication of GB479808A publication Critical patent/GB479808A/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

479,808. Valve amplifying circuits. STANDARD TELEPHONES & CABLES, Ltd. April 1, 1937, No. 9300. Convention date, April 1, 1936. [Class 40 (v)] In an amplifier in which a negative feedback connection forms one diagonal of a bridge of which the other diagonal is formed by the load circuit and in which one of the arms comprises the discharge path of the output valve, a non-linear resistance such as that made from silicon carbide and clay as described in U.S.A. Specification 1,822,742 is used in another arm to ensure that the bridge remains balanced in spite of impedance variations in the discharge path. As shown in the Figure, the output valve is operated class B fashion and the non-linear resistance T is arranged in series with a blocking condenser and so is affected only by changes in the alternating current through it. In a modification, Fig. 4 (not shown), the non-linear resistance is in the position occupied in Fig. 1 by the resistance KRO and so responds to changes in the steady plate current as well as to changes in alternating current.
GB9300/37A 1936-04-01 1937-04-01 Improvements in thermionic amplifiers Expired GB479808A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US72146A US2103490A (en) 1936-04-01 1936-04-01 Wave translating circuits

Publications (1)

Publication Number Publication Date
GB479808A true GB479808A (en) 1938-02-11

Family

ID=22105871

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9300/37A Expired GB479808A (en) 1936-04-01 1937-04-01 Improvements in thermionic amplifiers

Country Status (2)

Country Link
US (1) US2103490A (en)
GB (1) GB479808A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2423362A (en) * 1943-04-24 1947-07-01 Du Mont Allen B Lab Inc Feed-back circuits
US3048791A (en) * 1943-06-22 1962-08-07 Sheldon H Dike Amplifier which changes its frequency response with time
US2563773A (en) * 1946-07-30 1951-08-07 Sonotone Corp Audio-frequency amplifier
US2757281A (en) * 1951-12-20 1956-07-31 Bel Clarence J Le Circuit with extended logarithmic characteristic
NL167604C (en) * 1952-02-21 Kernverfahrenstechnik Gmbh METHOD OF SEPARATING BY CENTRIFUGAL FORCES OF AT LEAST PARTIALLY IONIZED GAS MIXTURE IN A LIGHT AND HEAVY FRACTION, AND A DEVICE FOR APPLYING THE METHOD.
DE1215769B (en) * 1959-03-06 1966-05-05 Telefunken Patent Counter-coupled transistor power amplifier
US3239805A (en) * 1961-09-11 1966-03-08 Lab For Electronics Inc Traffic density computer

Also Published As

Publication number Publication date
US2103490A (en) 1937-12-28

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