GB749694A - Hybrid circuits for connecting a four wire transmission line to a two wire transmission line - Google Patents

Hybrid circuits for connecting a four wire transmission line to a two wire transmission line

Info

Publication number
GB749694A
GB749694A GB17036/53A GB1703653A GB749694A GB 749694 A GB749694 A GB 749694A GB 17036/53 A GB17036/53 A GB 17036/53A GB 1703653 A GB1703653 A GB 1703653A GB 749694 A GB749694 A GB 749694A
Authority
GB
United Kingdom
Prior art keywords
transmission line
wire transmission
winding
windings
appearing
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
GB17036/53A
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 GB749694A publication Critical patent/GB749694A/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
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/54—Circuits using the same frequency for two directions of communication
    • H04B1/58—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/03—Hybrid circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

749,694. Two-way transmission. STANDARD TELEPHONES & CABLES, Ltd. June 19, 1953 [June 27, 1952], No. 17036/53. Class 40 (4). In a hybrid connecting circuit including a transformer having three windings 2, 3, 4, and an amplifier 5 having two output circuits 9, 10, signals incoming to terminals 7, 8, are prevented from appearing at the outgoing terminals 19, 20 by arranging that the signals from the two outputs 9, 10 appearing in the outgoing circuit are equal and opposite. Windings 3 and 4 are connected to the anode and cathode respectively of triode 21, Fig. 2, and the number of turns on each winding is such that the signal current developed across load resistor 22 and passing to earth through winding 3 and high impedance 23 is substantially eliminated by the current induced in winding 3. In a modification the cathode and anode circuits are reversed.
GB17036/53A 1952-06-27 1953-06-19 Hybrid circuits for connecting a four wire transmission line to a two wire transmission line Expired GB749694A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1031836X 1952-06-27

Publications (1)

Publication Number Publication Date
GB749694A true GB749694A (en) 1956-05-30

Family

ID=9583381

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17036/53A Expired GB749694A (en) 1952-06-27 1953-06-19 Hybrid circuits for connecting a four wire transmission line to a two wire transmission line

Country Status (5)

Country Link
BE (1) BE520979A (en)
DE (1) DE1031836B (en)
FR (1) FR1059246A (en)
GB (1) GB749694A (en)
NL (2) NL179303B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3181087A (en) * 1960-05-21 1965-04-27 Philips Corp Hybrid transformer employing balancing resistors to increase isolation between loads

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1429455A (en) * 1965-01-15 1966-02-25 Alsthom Cgee Improvement in bilateral transmission of messages between a fixed station and a rail vehicle or between two rail vehicles

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2499423A (en) * 1944-09-30 1950-03-07 Hartford Nat Bank & Trust Comp Telephone transmission circuits for coupling input and output devices to a telephone line
FR921171A (en) * 1945-11-02 1947-04-29 Sadir Carpentier Improvements in connection devices between electrical signaling lines
DE826152C (en) * 1949-11-22 1951-12-27 Joachim Vetterling Electrical arrangement for separating current paths

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3181087A (en) * 1960-05-21 1965-04-27 Philips Corp Hybrid transformer employing balancing resistors to increase isolation between loads

Also Published As

Publication number Publication date
BE520979A (en)
NL179303B (en)
NL89220C (en)
DE1031836B (en) 1958-06-12
FR1059246A (en) 1954-03-23

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