GB706066A - Improvements in or relating to sound rejection circuits for television receivers - Google Patents

Improvements in or relating to sound rejection circuits for television receivers

Info

Publication number
GB706066A
GB706066A GB151952A GB151952A GB706066A GB 706066 A GB706066 A GB 706066A GB 151952 A GB151952 A GB 151952A GB 151952 A GB151952 A GB 151952A GB 706066 A GB706066 A GB 706066A
Authority
GB
United Kingdom
Prior art keywords
resonant
frequency
input
sound signal
circuit
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
GB151952A
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.)
ALBERT JESSE BIGGS
General Electric Co PLC
Original Assignee
ALBERT JESSE BIGGS
General Electric Co 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 ALBERT JESSE BIGGS, General Electric Co PLC filed Critical ALBERT JESSE BIGGS
Priority to GB151952A priority Critical patent/GB706066A/en
Publication of GB706066A publication Critical patent/GB706066A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/0138—Electrical filters or coupling circuits
    • H03H7/0146—Coupling circuits between two tubes, not otherwise provided for
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/175—Series LC in series path
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/1758—Series LC in shunt or branch path
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/1791—Combined LC in shunt or branch path

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Filters And Equalizers (AREA)

Abstract

706,066. Impedance networks. GENERAL ELECTRIC CO., Ltd., BIGGS, A. J., and RIBCHESTER, E. Jan. 15, 1953 [Jan. 18, 1952], No. 1519/52. Class 40 (8) A sound-rejection circuit for a television receiver comprises a series resonant input circuit broadly resonant at the frequency of the sound signal, a series resonant output circuit broadly resonant within the desired pass band and a coupling circuit connected in parallel with the input and output circuits which is sharply resonant and has a low impedance at the frequency of the sound signal. The input and output circuits comprise respectively inductors 5, 8 which resonate respectively with the stray capacitances 6, 9 of the pentodes 1, 3. The input and output circuits are damped by resistances 7, 10. The coupling circuit consists of a capacitor 12 and an inductor 11 arranged in series and, preferably, shunted by a further inductor 13 which makes the coupling circuit also sharply resonant and of high impedance at the end of the pass band adjacent the sound signal frequency and thus has the effect of steepening the response curve between the end of the pass band and the frequency of the sound signal.
GB151952A 1952-01-18 1952-01-18 Improvements in or relating to sound rejection circuits for television receivers Expired GB706066A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB151952A GB706066A (en) 1952-01-18 1952-01-18 Improvements in or relating to sound rejection circuits for television receivers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB151952A GB706066A (en) 1952-01-18 1952-01-18 Improvements in or relating to sound rejection circuits for television receivers

Publications (1)

Publication Number Publication Date
GB706066A true GB706066A (en) 1954-03-24

Family

ID=9723373

Family Applications (1)

Application Number Title Priority Date Filing Date
GB151952A Expired GB706066A (en) 1952-01-18 1952-01-18 Improvements in or relating to sound rejection circuits for television receivers

Country Status (1)

Country Link
GB (1) GB706066A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2884485A (en) * 1955-03-08 1959-04-28 Motorola Inc Television receiver
US3135827A (en) * 1961-01-24 1964-06-02 Motorola Inc Television receiver sound improvement apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2884485A (en) * 1955-03-08 1959-04-28 Motorola Inc Television receiver
US3135827A (en) * 1961-01-24 1964-06-02 Motorola Inc Television receiver sound improvement apparatus

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