CA1075778A - Hybrid circuit - Google Patents

Hybrid circuit

Info

Publication number
CA1075778A
CA1075778A CA264,114A CA264114A CA1075778A CA 1075778 A CA1075778 A CA 1075778A CA 264114 A CA264114 A CA 264114A CA 1075778 A CA1075778 A CA 1075778A
Authority
CA
Canada
Prior art keywords
terminal
current mirror
coupled
mirror circuit
loop
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
CA264,114A
Other languages
English (en)
French (fr)
Inventor
Frank S. Boxall
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of CA1075778A publication Critical patent/CA1075778A/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
    • H04B1/586—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 using an electronic circuit
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/001—Current supply source at the exchanger providing current to substations
    • H04M19/005—Feeding arrangements without the use of line transformers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Devices For Supply Of Signal Current (AREA)
CA264,114A 1975-05-09 1976-10-25 Hybrid circuit Expired CA1075778A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/575,927 US4004109A (en) 1975-05-09 1975-05-09 Hybrid circuit

Publications (1)

Publication Number Publication Date
CA1075778A true CA1075778A (en) 1980-04-15

Family

ID=24302267

Family Applications (1)

Application Number Title Priority Date Filing Date
CA264,114A Expired CA1075778A (en) 1975-05-09 1976-10-25 Hybrid circuit

Country Status (5)

Country Link
US (1) US4004109A (enExample)
CA (1) CA1075778A (enExample)
DE (1) DE2649351A1 (enExample)
FR (1) FR2379203A1 (enExample)
GB (1) GB1514103A (enExample)

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH599731A5 (enExample) * 1976-03-02 1978-05-31 Ibm
US4064377A (en) * 1976-03-11 1977-12-20 Wescom Switching, Inc. Electronic hybrid and hybrid repeater
US4203012A (en) * 1977-07-14 1980-05-13 Boxall Frank S Hybrid circuit using current mirror circuits
NL7805416A (nl) * 1978-05-19 1979-11-21 Philips Nv Zelf-instellende vorkschakeling.
FR2430153A1 (fr) * 1978-06-26 1980-01-25 Trt Telecom Radio Electr Joncteur d'abonne destine a assurer sans transformateur un couplage deux fils-quatre fils
FR2437757A2 (fr) * 1978-06-26 1980-04-25 Trt Telecom Radio Electr Joncteur d'abonne destine a assurer un couplage en deux fils ou quatre fils avec un central telephonique
NL7807531A (nl) * 1978-07-13 1980-01-15 Philips Nv Inrichting voor het toevoeren van een signaal aan een transmissielijn.
US4174470A (en) * 1978-10-10 1979-11-13 Bell Telephone Laboratories, Incorporated Electronic hybrid
US4181824A (en) * 1978-10-10 1980-01-01 Bell Telephone Laboratories, Incorporated Balancing impedance circuit
DE2911866C3 (de) * 1979-03-26 1982-03-11 Siemens AG, 1000 Berlin und 8000 München Anordnung mit einer Gabelschaltung für den Zweidraht-Vierdraht-Übergang in PCM-Zeitmultiplexsystemen
US4272656A (en) * 1979-04-05 1981-06-09 Precision Monolithics, Inc. Quasi-resistive battery feed for telephone circuits
NL7903662A (nl) * 1979-05-10 1980-11-12 Philips Nv Lijncircuit.
NL7903665A (nl) * 1979-05-10 1980-11-12 Philips Nv Aansluitschakeling voor een telefoonlijn.
NL7903664A (nl) * 1979-05-10 1980-11-12 Philips Nv Lijncircuit.
FR2460078B1 (fr) * 1979-06-25 1986-12-12 Trt Telecom Radio Electr Joncteur d'abonne electronique
DE3066894D1 (en) * 1979-06-25 1984-04-19 Trt Telecom Radio Electr Current weighting circuit
US4300023A (en) * 1979-08-13 1981-11-10 Motorola, Inc. Hybrid circuit
JPS56144644A (en) * 1980-04-14 1981-11-11 Nec Corp Two-wire to four-wire convertion circuit
US4314196A (en) * 1980-07-14 1982-02-02 Motorola Inc. Current limiting circuit
US4358645A (en) * 1980-08-05 1982-11-09 Motorola, Inc. Loop sensing circuit for use with a subscriber loop interface circuit
US4322586A (en) * 1980-11-13 1982-03-30 Northern Telecom Limited Transformerless line interface circuit
JPS57104336A (en) * 1980-12-20 1982-06-29 Oki Electric Ind Co Ltd Hybrid circuit
CA1171989A (en) * 1981-02-17 1984-07-31 Denis W. Aull Battery feed circuit
US4476350A (en) * 1981-02-17 1984-10-09 Bell Telephone Laboratories, Incorporated Battery feed circuit
US4406929A (en) * 1981-02-26 1983-09-27 Motorola Inc. Hook status detector for a subscriber loop interface circuit
US4377730A (en) * 1981-06-08 1983-03-22 Motorola, Inc. Tone elimination circuit
CA1177985A (en) * 1981-09-24 1984-11-13 Don W. Zobel Electronic terminator circuit
US4431874A (en) * 1981-09-24 1984-02-14 Motorola, Inc. Balanced current multiplier circuit for a subscriber loop interface circuit
US4419542A (en) * 1982-05-17 1983-12-06 Bell Telephone Laboratories, Incorporated Battery feed circuit
FR2527404B1 (fr) * 1982-05-19 1987-10-23 Cit Alcatel Joncteur d'abonne electronique
GB2130851A (en) * 1982-11-24 1984-06-06 Grundy & Partners Ltd Hybrid junction circuits
JP2780363B2 (ja) * 1989-08-11 1998-07-30 富士通株式会社 ハイブリッド回路
EP0693846A3 (en) * 1994-06-24 1999-05-26 Harris Corporation Telephone subscriber line interface circuit and method
US6792105B1 (en) 2000-10-31 2004-09-14 3Com Corporation Current-mode differential active hybrid circuit
US7054374B1 (en) * 2000-12-29 2006-05-30 Intel Corporation Differential simultaneous bi-directional receiver
US7889752B2 (en) * 2003-06-05 2011-02-15 Marvell International Ltd. Dual ported network physical layer

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2511948A (en) * 1950-06-20 Hybrid circuit
US3180947A (en) * 1961-09-12 1965-04-27 Sylvania Electric Prod Electronic bridge hybrid circuit
US3530260A (en) * 1966-12-23 1970-09-22 Bell Telephone Labor Inc Transistor hybrid circuit
NL7000395A (enExample) * 1970-01-13 1971-07-15
FR2160308B1 (enExample) * 1971-11-19 1977-01-28 Labo Cent Telecommunicat
US3778563A (en) * 1972-03-29 1973-12-11 Lear Siegler Inc Voice frequency repeater
NL7208148A (enExample) * 1972-06-15 1973-12-18

Also Published As

Publication number Publication date
GB1514103A (en) 1978-06-14
DE2649351A1 (de) 1978-05-03
FR2379203B1 (enExample) 1980-11-07
US4004109A (en) 1977-01-18
FR2379203A1 (fr) 1978-08-25

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Legal Events

Date Code Title Description
MKEX Expiry