GB681023A - Improvements in or relating to automatic level control devices for electric carrier current communication systems - Google Patents

Improvements in or relating to automatic level control devices for electric carrier current communication systems

Info

Publication number
GB681023A
GB681023A GB4969/50A GB496950A GB681023A GB 681023 A GB681023 A GB 681023A GB 4969/50 A GB4969/50 A GB 4969/50A GB 496950 A GB496950 A GB 496950A GB 681023 A GB681023 A GB 681023A
Authority
GB
United Kingdom
Prior art keywords
pilot
rectifier
circuit
output
oscillator
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
GB4969/50A
Other languages
English (en)
Inventor
Bent Bulow Jacobsen
Charles Trevor Daly
Alban Edward Harris
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 GB681023A publication Critical patent/GB681023A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising
    • H04B3/10—Control of transmission; Equalising by pilot signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L5/00—Automatic control of voltage, current, or power

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Control Of Amplification And Gain Control (AREA)
GB4969/50A 1950-02-27 1950-02-27 Improvements in or relating to automatic level control devices for electric carrier current communication systems Expired GB681023A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB296197X 1950-02-27

Publications (1)

Publication Number Publication Date
GB681023A true GB681023A (en) 1952-10-15

Family

ID=10294435

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4969/50A Expired GB681023A (en) 1950-02-27 1950-02-27 Improvements in or relating to automatic level control devices for electric carrier current communication systems

Country Status (4)

Country Link
BE (1) BE501513A (en:Method)
CH (1) CH296197A (en:Method)
FR (1) FR1044600A (en:Method)
GB (1) GB681023A (en:Method)

Also Published As

Publication number Publication date
BE501513A (en:Method)
FR1044600A (fr) 1953-11-19
CH296197A (fr) 1954-01-31

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