GB688142A - Improvements relating to electrical wave filters - Google Patents

Improvements relating to electrical wave filters

Info

Publication number
GB688142A
GB688142A GB1426250A GB1426250A GB688142A GB 688142 A GB688142 A GB 688142A GB 1426250 A GB1426250 A GB 1426250A GB 1426250 A GB1426250 A GB 1426250A GB 688142 A GB688142 A GB 688142A
Authority
GB
United Kingdom
Prior art keywords
frequency
electric
june
improvements relating
wave filters
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
GB1426250A
Inventor
Reginald Graham
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries Ltd
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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB1426250A priority Critical patent/GB688142A/en
Publication of GB688142A publication Critical patent/GB688142A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • H03H11/12—Frequency selective two-port networks using amplifiers with feedback
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Networks Using Active Elements (AREA)

Abstract

688,142. Electric filters. ELECTRIC & MUSICAL INDUSTRIES, Ltd. June 6, 1951 [June 8, 1950], No. 14262/50. Class 40 (viii). An electric filter for separating signals of one frequency from those of another comprises a bridged T network which transmits the first frequency and whose series arms 6, 7, and 8 are tuned to reject the second frequency, the rejected signal being picked off by a coil 13 coupled to the inductance 6, and the damping introduced by this coupling is compensated by adjustment of the shunt arm resistance 9 of the T network. The arrangement as shown is utilized for separating the sound and vision signals in a television receiver.
GB1426250A 1950-06-08 1950-06-08 Improvements relating to electrical wave filters Expired GB688142A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1426250A GB688142A (en) 1950-06-08 1950-06-08 Improvements relating to electrical wave filters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1426250A GB688142A (en) 1950-06-08 1950-06-08 Improvements relating to electrical wave filters

Publications (1)

Publication Number Publication Date
GB688142A true GB688142A (en) 1953-02-25

Family

ID=10037966

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1426250A Expired GB688142A (en) 1950-06-08 1950-06-08 Improvements relating to electrical wave filters

Country Status (1)

Country Link
GB (1) GB688142A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1108822B (en) * 1954-06-09 1961-06-15 Felten & Guilleaume Gmbh Six-pole network for mutual interference-free joining or separation of a useful frequency band and a single frequency
DE1222599B (en) * 1955-07-02 1966-08-11 Int Standard Electric Corp Crossover network and its application
DE1268211B (en) * 1961-09-22 1968-05-16 Siemens Ag Circuit arrangement for feeding in or filtering out signal and / or alternating measurement currents in end or intermediate points of carrier frequency systems

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1108822B (en) * 1954-06-09 1961-06-15 Felten & Guilleaume Gmbh Six-pole network for mutual interference-free joining or separation of a useful frequency band and a single frequency
DE1222599B (en) * 1955-07-02 1966-08-11 Int Standard Electric Corp Crossover network and its application
DE1268211B (en) * 1961-09-22 1968-05-16 Siemens Ag Circuit arrangement for feeding in or filtering out signal and / or alternating measurement currents in end or intermediate points of carrier frequency systems

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