GB534988A - Stabilised tuned system for high-frequency oscillations - Google Patents

Stabilised tuned system for high-frequency oscillations

Info

Publication number
GB534988A
GB534988A GB879/40A GB87940A GB534988A GB 534988 A GB534988 A GB 534988A GB 879/40 A GB879/40 A GB 879/40A GB 87940 A GB87940 A GB 87940A GB 534988 A GB534988 A GB 534988A
Authority
GB
United Kingdom
Prior art keywords
inductance
valve
coupled
output
feed
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
GB879/40A
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 Aerospace Inc
Original Assignee
Hazeltine Corp
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 Hazeltine Corp filed Critical Hazeltine Corp
Publication of GB534988A publication Critical patent/GB534988A/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
    • H03F1/38—Positive-feedback circuit arrangements without negative feedback
    • H03F1/40—Positive-feedback circuit arrangements without negative feedback in discharge-tube amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/163—Special arrangements for the reduction of the damping of resonant circuits of receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)

Abstract

534,988. Valve circuits. HAZEL'TINE CORPORATION. Jan. 15, 1940, No. 879. Convention date, Feb. 1, 1939. [Class 40 (v)] The damping of a tuned circuit is reduced by connecting it across the output of valve giving positive reaction, and the arrangement is stabilised by providing negative feed-back so proportioned as to result in the effective introduction of a negative resistance into the tuned circuit. An amplifier 10 has input terminals 11 and output terminals 12. The output circuit includes an inductance 13 coupled to an inductance 14 which is coupled by an inductance 16 to the output terminals 12. Inductance 14 comprises with condenser 15 a tuned circuit which is coupled across the output electrodes of a valve 20 by means of a resistance 21 whose inherent capacity is neutralised by an inductance 23. This provides a negative feed-back voltage while a positive feed back is provided by an inductance 24 coupled to inductance 14 and connected to the control grid of valve 20. The joint effect of the two feed-back means is to introduce a negative resistance into circuit 14, 15, the valve of which is never such as to cause instability due to changes in transconductance of the valve 20.
GB879/40A 1939-02-01 1940-01-15 Stabilised tuned system for high-frequency oscillations Expired GB534988A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US254013A US2197239A (en) 1939-02-01 1939-02-01 Stabilized tuned system

Publications (1)

Publication Number Publication Date
GB534988A true GB534988A (en) 1941-03-25

Family

ID=22962587

Family Applications (1)

Application Number Title Priority Date Filing Date
GB879/40A Expired GB534988A (en) 1939-02-01 1940-01-15 Stabilised tuned system for high-frequency oscillations

Country Status (3)

Country Link
US (1) US2197239A (en)
DE (1) DE758656C (en)
GB (1) GB534988A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2586365A (en) * 1947-03-20 1952-02-19 Westinghouse Electric Corp Means for eliminating spurious frequencies
US2594485A (en) * 1948-04-15 1952-04-29 Nowak Karl Circuit organization adapted to receive or amplify electric oscillations
US2557154A (en) * 1949-03-24 1951-06-19 Halvor T Strandrud Stabilized negative impedance circuit
US2662939A (en) * 1949-04-02 1953-12-15 Nowak Karl High selectivity amplifier
US2659776A (en) * 1949-05-13 1953-11-17 Nowak Karl Selective receiving and amplifying circuit
US2650760A (en) * 1950-02-01 1953-09-01 Glenn W Bills Network calculating board

Also Published As

Publication number Publication date
US2197239A (en) 1940-04-16
DE758656C (en) 1953-05-18

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