GB793592A - An electron tube circuit for frequency separation - Google Patents

An electron tube circuit for frequency separation

Info

Publication number
GB793592A
GB793592A GB20162/56A GB2016256A GB793592A GB 793592 A GB793592 A GB 793592A GB 20162/56 A GB20162/56 A GB 20162/56A GB 2016256 A GB2016256 A GB 2016256A GB 793592 A GB793592 A GB 793592A
Authority
GB
United Kingdom
Prior art keywords
circuit
anode
cathode
frequencies
resistor
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
GB20162/56A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables 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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB793592A publication Critical patent/GB793592A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
    • H04R3/14—Cross-over networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Amplifiers (AREA)

Abstract

793,592. Electronic frequency separating devices. STANDARD TELEPHONES & CABLES, Ltd. June 29, 1956 [July 1, 1955], No. 20162/56. Class 40 (6). An electron discharge tube forms part of a circuit for partial separation of widely spaced frequencies. The Figure shows the discharge tube 6 having a resistor 10 connected to the cathode and a resistor 14 and capacitor 16 effectively in parallel connected to the anode. The anode circuit presents a higher impedance to low frequencies than does the cathode circuit and thus when a composite signal is applied to the grid 5, the voltage at the anode contains a greater proportion of low frequencies. The anode circuit presents a low impedance to high frequencies than the cathode circuit and the cathode output voltage mainly consists of high frequencies.
GB20162/56A 1955-07-01 1956-06-29 An electron tube circuit for frequency separation Expired GB793592A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US793592XA 1955-07-01 1955-07-01

Publications (1)

Publication Number Publication Date
GB793592A true GB793592A (en) 1958-04-16

Family

ID=22150028

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20162/56A Expired GB793592A (en) 1955-07-01 1956-06-29 An electron tube circuit for frequency separation

Country Status (2)

Country Link
BE (1) BE551508A (en)
GB (1) GB793592A (en)

Also Published As

Publication number Publication date
BE551508A (en)

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