SE438758B - Gaffelkoppling for anslutning av en tvatradsabonnentledning till en fyrtradsledning - Google Patents

Gaffelkoppling for anslutning av en tvatradsabonnentledning till en fyrtradsledning

Info

Publication number
SE438758B
SE438758B SE7904303A SE7904303A SE438758B SE 438758 B SE438758 B SE 438758B SE 7904303 A SE7904303 A SE 7904303A SE 7904303 A SE7904303 A SE 7904303A SE 438758 B SE438758 B SE 438758B
Authority
SE
Sweden
Prior art keywords
terminals
subscriber line
balancing network
direct current
impedance
Prior art date
Application number
SE7904303A
Other languages
English (en)
Swedish (sv)
Other versions
SE7904303L (sv
Inventor
R B Buchner
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of SE7904303L publication Critical patent/SE7904303L/xx
Publication of SE438758B publication Critical patent/SE438758B/sv

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • 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
    • H04B1/581—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 a transformer
    • H04B1/582—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 a transformer with automatic balancing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/005—Interface circuits for subscriber lines

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (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)
SE7904303A 1978-05-19 1979-05-16 Gaffelkoppling for anslutning av en tvatradsabonnentledning till en fyrtradsledning SE438758B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7805416BA NL7805416A (nl) 1978-05-19 1978-05-19 Zelf-instellende vorkschakeling.

Publications (2)

Publication Number Publication Date
SE7904303L SE7904303L (sv) 1979-11-20
SE438758B true SE438758B (sv) 1985-04-29

Family

ID=19830865

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7904303A SE438758B (sv) 1978-05-19 1979-05-16 Gaffelkoppling for anslutning av en tvatradsabonnentledning till en fyrtradsledning

Country Status (10)

Country Link
US (1) US4297536A (xx)
JP (1) JPS54152838A (xx)
AU (1) AU522349B2 (xx)
BE (1) BE876333A (xx)
CA (1) CA1137665A (xx)
DE (1) DE2919652C2 (xx)
FR (1) FR2426365A1 (xx)
GB (1) GB2021362B (xx)
NL (1) NL7805416A (xx)
SE (1) SE438758B (xx)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5733844A (en) * 1980-08-08 1982-02-24 Toshiba Corp Echo cancelling device
SE426127B (sv) * 1981-04-24 1982-12-06 Ericsson Telefon Ab L M Likstromsmagnetiserad gaffeltransformator
SE450677B (sv) * 1982-04-01 1987-07-13 Ericsson Telefon Ab L M Matningskrets ingaende i en likstromsmagnetiserad gaffeltransformator
JPS5853233A (ja) * 1981-09-25 1983-03-29 Fujitsu Ltd 平衡結線網整合方式
DE3533762A1 (de) * 1985-09-21 1987-04-02 Ant Nachrichtentech Schaltungsanordnung zum anschluss eines teilnehmerendgeraetes an teilnehmeranschlussleitung
US5271060A (en) * 1990-01-12 1993-12-14 Codex Corporation Circuitry for interfacing telecommunications equipment to a communication channel
US8204094B2 (en) * 2009-04-21 2012-06-19 Innova, Inc. Scalable, efficient laser systems
US9948004B2 (en) 2014-07-01 2018-04-17 Telefonaktiebolaget Lm Ericsson (Publ) Hybrid coil circuit

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1249948B (de) * 1967-09-14 Siemens Aktiengesellschaft, Berlin und München, München Schaltungsanordnung zum vierdrahtmäßigen Zusammenschalten von Leitungsabschnitten in Fernmelde-, insbesondere Fernsprechanlagen
US2302374A (en) * 1941-02-25 1942-11-17 Bell Telephone Labor Inc Two-way signal transmission system
NL64921C (xx) * 1942-10-24
NL269763A (xx) * 1960-09-30
US3178521A (en) * 1962-11-15 1965-04-13 Bell Telephone Labor Inc Dynamically balanced telephone network
GB1115216A (en) * 1967-02-28 1968-05-29 Standard Telephones Cables Ltd Hybrid transformer
GB1210152A (en) * 1967-07-18 1970-10-28 Int Standard Electric Corp Hybrid unit
FR2160308B1 (xx) * 1971-11-19 1977-01-28 Labo Cent Telecommunicat
US3875350A (en) * 1973-11-05 1975-04-01 Gte Automatic Electric Lab Inc Self-balancing hybrid circuit
US4004109A (en) * 1975-05-09 1977-01-18 Boxall Frank S Hybrid circuit
US4150260A (en) * 1975-06-18 1979-04-17 Hitachi, Ltd. Subscriber's circuit for four-wire-system local switch
DE2714803B1 (de) * 1977-04-02 1978-08-03 Standard Elek K Lorenz Ag Gabelschaltung zur Zweidraht-Vollduplexuebertragung von Digitalsignalen
US4103118A (en) * 1977-05-02 1978-07-25 Synanon Foundation, Inc. Autobalance hybrid circuit
US4096362A (en) * 1977-06-20 1978-06-20 Bell Telephone Laboratories, Incorporated Automatic cable balancing network

Also Published As

Publication number Publication date
US4297536A (en) 1981-10-27
CA1137665A (en) 1982-12-14
DE2919652C2 (de) 1986-05-07
FR2426365A1 (fr) 1979-12-14
FR2426365B1 (xx) 1984-04-20
NL7805416A (nl) 1979-11-21
SE7904303L (sv) 1979-11-20
AU522349B2 (en) 1982-05-27
JPS54152838A (en) 1979-12-01
AU4709179A (en) 1979-11-22
DE2919652A1 (de) 1979-11-22
BE876333A (fr) 1979-11-19
GB2021362A (en) 1979-11-28
GB2021362B (en) 1982-08-25

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