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GB682151A - Improvements in or relating to circuit-arrangements for amplifying and separating signals of different frequencies - Google Patents

Improvements in or relating to circuit-arrangements for amplifying and separating signals of different frequencies

Info

Publication number
GB682151A
GB682151A GB19778/51A GB1977851A GB682151A GB 682151 A GB682151 A GB 682151A GB 19778/51 A GB19778/51 A GB 19778/51A GB 1977851 A GB1977851 A GB 1977851A GB 682151 A GB682151 A GB 682151A
Authority
GB
United Kingdom
Prior art keywords
circuit
amplifying
arrangements
relating
different frequencies
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
GB19778/51A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical 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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB682151A publication Critical patent/GB682151A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H04N5/4446—IF amplifier circuits specially adapted for B&W TV
    • 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
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/12—Neutralising, balancing, or compensation arrangements
    • 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
    • H04B1/1638—Special circuits to enhance selectivity of receivers not otherwise provided for
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/08—Separation of synchronising signals from picture signals
    • H04N5/10—Separation of line synchronising signal from frame synchronising signal or vice versa
    • 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)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Amplifiers (AREA)

Abstract

682,151. Frequency selective valve circuits; multiplex radio signalling. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Aug. 22, 1951 [Aug. 25, 1950], No. 19778/51. Classes 40 (v) and 40 (vi). The anode circuit of a secondary emissive valve includes a circuit 9 resonant to one of the frequencies in the input, two impedances 10, 11 being chosen of such value that no voltage of this frequency appears at the dynode 7. The impedances may be resistors, the value of resistor 10 being variable. The circuit may be used for separating different carrier waves such as sound and vision signals, for separating line and frame signals, in lowfrequency amplifiers to remove an unwanted frequency and in reflex amplifiers.
GB19778/51A 1950-08-25 1951-08-22 Improvements in or relating to circuit-arrangements for amplifying and separating signals of different frequencies Expired GB682151A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL293576X 1950-08-25

Publications (1)

Publication Number Publication Date
GB682151A true GB682151A (en) 1952-11-05

Family

ID=19782868

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19778/51A Expired GB682151A (en) 1950-08-25 1951-08-22 Improvements in or relating to circuit-arrangements for amplifying and separating signals of different frequencies

Country Status (7)

Country Link
US (1) US2662128A (en)
BE (1) BE505422A (en)
CH (1) CH293576A (en)
DE (1) DE874151C (en)
FR (1) FR1041286A (en)
GB (1) GB682151A (en)
NL (1) NL81595C (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE426821A (en) * 1937-03-10
GB514762A (en) * 1938-06-03 1939-11-16 Ferranti Ltd Improvements in or relating to thermionic amplifiers
GB609845A (en) * 1941-07-19 1948-10-07 Philips Nv Improvements in or relating to circuits for electric discharge tubes

Also Published As

Publication number Publication date
US2662128A (en) 1953-12-08
DE874151C (en) 1953-04-20
NL81595C (en)
BE505422A (en)
CH293576A (en) 1953-09-30
FR1041286A (en) 1953-10-22

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