BE902986A - Circuit de ligne - Google Patents

Circuit de ligne

Info

Publication number
BE902986A
BE902986A BE2/60757A BE2060757A BE902986A BE 902986 A BE902986 A BE 902986A BE 2/60757 A BE2/60757 A BE 2/60757A BE 2060757 A BE2060757 A BE 2060757A BE 902986 A BE902986 A BE 902986A
Authority
BE
Belgium
Prior art keywords
coupled
subscriber
current source
terminals
line
Prior art date
Application number
BE2/60757A
Other languages
English (en)
Inventor
P Meschkat
J Zanzig
Original Assignee
Int Standard Electric Corp
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 Int Standard Electric Corp filed Critical Int Standard Electric Corp
Publication of BE902986A publication Critical patent/BE902986A/fr

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/28—Impedance matching networks
    • 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)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Telephone Function (AREA)

Abstract

Le signal venant de la ligne de réception E est appliqué à une entrée de l'amplificateur différentiel 2, dont la sortie est connectée à l'entrée de la source de courant controlée 3 à travers l'impédance complexe Z2. Entre les bornes d'abonné TA, TB et les entrées de l'amplificateur différentiel 2 et entre la ligne de réception E et l'amplificateur différentiel 2, les résistances 22, 23 et 21 sont insérées. Les résistances 22 et 23 ont une valeur égale et le rapport des valeurs des résistances 22 et 21 suit le rapport des impédances complexes originelles Z1 et Z2.
BE2/60757A 1984-07-30 1985-07-30 Circuit de ligne BE902986A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19843428106 DE3428106A1 (de) 1984-07-30 1984-07-30 Teilnehmeranschlussschaltung

Publications (1)

Publication Number Publication Date
BE902986A true BE902986A (fr) 1986-01-30

Family

ID=6241952

Family Applications (1)

Application Number Title Priority Date Filing Date
BE2/60757A BE902986A (fr) 1984-07-30 1985-07-30 Circuit de ligne

Country Status (7)

Country Link
US (1) US4789999A (fr)
EP (1) EP0171692B1 (fr)
JP (1) JPS6187436A (fr)
AT (1) ATE47945T1 (fr)
BE (1) BE902986A (fr)
DE (2) DE3428106A1 (fr)
ES (1) ES8703076A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3640127A1 (de) * 1986-11-25 1988-06-01 Standard Elektrik Lorenz Ag Elektronische gabelschaltung
JP2645022B2 (ja) * 1987-08-21 1997-08-25 株式会社東芝 加入者回路
DE3942757A1 (de) * 1989-12-23 1991-06-27 Standard Elektrik Lorenz Ag Summierverstaerker mit einem komplexen gewichtungsfaktor und schnittstelle mit einem solchen summierverstaerker
KR100476138B1 (ko) * 1997-02-07 2005-07-21 코닌클리케 필립스 일렉트로닉스 엔.브이. 전기통신회로및전기통신장치
JP2005012586A (ja) * 2003-06-20 2005-01-13 Nec Electronics Corp データ転送装置
US7957522B2 (en) * 2006-03-06 2011-06-07 Winbond Electronics Corporation Programmable plain old telephone line impedance matching circuits

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2160308B1 (fr) * 1971-11-19 1977-01-28 Labo Cent Telecommunicat
US3868581A (en) * 1973-07-20 1975-02-25 Rca Corp Current amplifier
US3970805A (en) * 1974-02-22 1976-07-20 Gte Automatic Electric (Canada) Limited Active hybrid circuit
US4064377A (en) * 1976-03-11 1977-12-20 Wescom Switching, Inc. Electronic hybrid and hybrid repeater
DE2838038A1 (de) * 1978-08-31 1980-03-13 Siemens Ag Einspeiseeinheit mit hohem ausgangsseitigen innenwiderstand
US4278847A (en) * 1979-02-26 1981-07-14 Tii Corporation Transformerless hybrid circuits
FR2462070A1 (fr) * 1979-07-17 1981-02-06 Cit Alcatel Dispositif d'alimentation d'un poste d'abonne
JPS5737965A (en) * 1980-08-15 1982-03-02 Nec Corp Two-terminal circuit
US4387273A (en) * 1980-08-25 1983-06-07 International Telephone And Telegraph Corporation Subscriber line interface circuit with impedance synthesizer
US4351060A (en) * 1980-10-23 1982-09-21 International Telephone And Telegraph Corporation Automatic, digitally synthesized matching line terminating impedance
US4476350A (en) * 1981-02-17 1984-10-09 Bell Telephone Laboratories, Incorporated Battery feed circuit
SE433284B (sv) * 1982-09-17 1984-05-14 Ericsson Telefon Ab L M Anordning for strommatning av en abonnentapparat
SE433285B (sv) * 1982-09-22 1984-05-14 Ericsson Telefon Ab L M Anordning for strommatning av en abonnentapparat
DE3237681C2 (de) * 1982-10-12 1986-03-27 Standard Elektrik Lorenz Ag, 7000 Stuttgart Speiseschaltung für einen veränderlichen Verbraucherwiderstand und mit unterschiedlich wirkendem Ausgangswiderstand
DE3246144C2 (de) * 1982-12-14 1986-09-25 Standard Elektrik Lorenz Ag, 7000 Stuttgart Schaltungsanordnung zur Stromkonstanthaltung
US4600811A (en) * 1982-12-28 1986-07-15 Nec Corporation Subscriber line interface circuit
CA1200938A (fr) * 1983-09-30 1986-02-18 Mitel Corporation Circuit d'interface pour signaux vocaux et de donnees
US4571460A (en) * 1984-03-12 1986-02-18 Northern Telecom Limited Active impedance line feed circuit with improved ground fault protection
CA1233580A (fr) * 1984-05-26 1988-03-01 Kenji Takato Circuit d'alimentation a batterie pour ligne d'abonne

Also Published As

Publication number Publication date
ATE47945T1 (de) 1989-11-15
JPS6187436A (ja) 1986-05-02
JPH03816B2 (fr) 1991-01-09
US4789999A (en) 1988-12-06
DE3574214D1 (en) 1989-12-14
EP0171692A2 (fr) 1986-02-19
DE3428106A1 (de) 1986-02-06
EP0171692A3 (en) 1986-12-30
EP0171692B1 (fr) 1989-11-08
ES545685A0 (es) 1986-12-01
ES8703076A1 (es) 1986-12-01

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Legal Events

Date Code Title Description
CA Change of address of the owner of the patent

Owner name: *ALCATEL N.V.STRAWINSKYLAAN 537, NL-1077 XX AMSTER

Effective date: 19850730

CH Change of patent owner

Owner name: *ALCATEL N.V.

Effective date: 19850730

RE Patent lapsed

Owner name: ALCATEL N.V.

Effective date: 19910731