GB643946A - Improvements in or relating to circuit-arrangements for amplifying ultra-high-frequency oscillations - Google Patents

Improvements in or relating to circuit-arrangements for amplifying ultra-high-frequency oscillations

Info

Publication number
GB643946A
GB643946A GB16082/48A GB1608248A GB643946A GB 643946 A GB643946 A GB 643946A GB 16082/48 A GB16082/48 A GB 16082/48A GB 1608248 A GB1608248 A GB 1608248A GB 643946 A GB643946 A GB 643946A
Authority
GB
United Kingdom
Prior art keywords
input
circuit
reaction
output
june
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
GB16082/48A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Philips Electronics NV
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 Philips Gloeilampenfabrieken NV, Philips Electronics NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB643946A publication Critical patent/GB643946A/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
    • H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
    • 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
    • H03F1/42—Modifications of amplifiers to extend the bandwidth
    • H03F1/48—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers
    • H03F1/50—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers with tubes only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/50—Amplifiers in which input is applied to, or output is derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower
    • H03F3/52—Amplifiers in which input is applied to, or output is derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower with tubes only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

643,946. Valve amplifying circuits. PHILIPS ELECTRICAL, Ltd. June 15, 1948, No. 16082. Convention date, June 18, 1947. [Class 40 (v)] The damping of the input circuit 5, Fig. 1, of a grounded grid amplifier 1 is reduced by a reaction condenser 7 between anode and cathode, while self oscillation is prevented by damping the output circuit 6 by coupling it to the input of a similar stage 10, having output terminals 17. In Fig. 3, the tube 34 is a secondary emission tube and the auxiliary cathode 18 is connected for high-frequencies to the grounded grid. The resistive and reactive parts 24, 23 of the reaction path may be separately adjusted, and the output circuit 6 is damped by being coupled to the input of a further stage (not shown). In a further modification (Fig. 4, not shown), the input, output and reaction circuits are each in the form of a Lecher system of three concentric conductors with adjustable bridges to form impedance transformers.
GB16082/48A 1947-06-18 1948-06-15 Improvements in or relating to circuit-arrangements for amplifying ultra-high-frequency oscillations Expired GB643946A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL271793X 1947-06-18

Publications (1)

Publication Number Publication Date
GB643946A true GB643946A (en) 1950-09-27

Family

ID=19781966

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16082/48A Expired GB643946A (en) 1947-06-18 1948-06-15 Improvements in or relating to circuit-arrangements for amplifying ultra-high-frequency oscillations

Country Status (4)

Country Link
BE (1) BE483185A (en)
CH (1) CH271793A (en)
FR (1) FR967766A (en)
GB (1) GB643946A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE975513C (en) * 1954-02-28 1961-12-14 Telefunken Patent Input circuit of an ultra-short wave receiver

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE975513C (en) * 1954-02-28 1961-12-14 Telefunken Patent Input circuit of an ultra-short wave receiver

Also Published As

Publication number Publication date
CH271793A (en) 1950-11-15
BE483185A (en)
FR967766A (en) 1950-11-10

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