GB720263A - Improvements in or relating to four terminal networks comprising electromagneticallycoupled coils - Google Patents

Improvements in or relating to four terminal networks comprising electromagneticallycoupled coils

Info

Publication number
GB720263A
GB720263A GB874850A GB874850A GB720263A GB 720263 A GB720263 A GB 720263A GB 874850 A GB874850 A GB 874850A GB 874850 A GB874850 A GB 874850A GB 720263 A GB720263 A GB 720263A
Authority
GB
United Kingdom
Prior art keywords
coils
electromagneticallycoupled
relating
terminal networks
screen
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
GB874850A
Inventor
William Henry Bernard Cooper
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.)
Post Office
Original Assignee
Post Office
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 Post Office filed Critical Post Office
Priority to GB874850A priority Critical patent/GB720263A/en
Publication of GB720263A publication Critical patent/GB720263A/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
    • H04B3/14—Control of transmission; Equalising characterised by the equalising network used
    • H04B3/143—Control of transmission; Equalising characterised by the equalising network used using amplitude-frequency equalisers
    • H04B3/145—Control of transmission; Equalising characterised by the equalising network used using amplitude-frequency equalisers variable equalisers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F19/00—Fixed transformers or mutual inductances of the signal type
    • H01F19/04—Transformers or mutual inductances suitable for handling frequencies considerably beyond the audio range
    • H01F19/08—Transformers having magnetic bias, e.g. for handling pulses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising
    • H04B3/14—Control of transmission; Equalising characterised by the equalising network used
    • H04B3/143—Control of transmission; Equalising characterised by the equalising network used using amplitude-frequency equalisers
    • H04B3/144—Control of transmission; Equalising characterised by the equalising network used using amplitude-frequency equalisers fixed equalizers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Amplifiers (AREA)

Abstract

720,263. Transformers. POSTMASTER GENERAL. Jan. 10, 1952 [April 6, 1950], No. 8748/50. Class 38 (2). A four-terminal network having an amplitude/frequency response characteristic similar to that of a transmission line operating under high-frequency conditions, for use with repeaters or line amplifiers comprises two electromagnetically coupled coils 1, 2 separated by a conducting screen 3 of soft iron, nickel-iron alloy, zinc or copper, which forms a short-circuited turn. To avoid disturbing reflections a further screen 4 of similar material may surround the outer winding.
GB874850A 1950-04-06 1950-04-06 Improvements in or relating to four terminal networks comprising electromagneticallycoupled coils Expired GB720263A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB874850A GB720263A (en) 1950-04-06 1950-04-06 Improvements in or relating to four terminal networks comprising electromagneticallycoupled coils

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB874850A GB720263A (en) 1950-04-06 1950-04-06 Improvements in or relating to four terminal networks comprising electromagneticallycoupled coils

Publications (1)

Publication Number Publication Date
GB720263A true GB720263A (en) 1954-12-15

Family

ID=9858527

Family Applications (1)

Application Number Title Priority Date Filing Date
GB874850A Expired GB720263A (en) 1950-04-06 1950-04-06 Improvements in or relating to four terminal networks comprising electromagneticallycoupled coils

Country Status (1)

Country Link
GB (1) GB720263A (en)

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