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CA1233283A - Circuit d'interface pour ligne d'abonne avec suppression du courant longitudinal - Google Patents

Circuit d'interface pour ligne d'abonne avec suppression du courant longitudinal

Info

Publication number
CA1233283A
CA1233283A CA000490970A CA490970A CA1233283A CA 1233283 A CA1233283 A CA 1233283A CA 000490970 A CA000490970 A CA 000490970A CA 490970 A CA490970 A CA 490970A CA 1233283 A CA1233283 A CA 1233283A
Authority
CA
Canada
Prior art keywords
resistors
coupled
subscriber line
current
inverting input
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
CA000490970A
Other languages
English (en)
Inventor
Gyula Jakab
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.)
Nortel Networks Ltd
Original Assignee
Northern Telecom Ltd
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 Northern Telecom Ltd filed Critical Northern Telecom Ltd
Priority to CA000490970A priority Critical patent/CA1233283A/fr
Application granted granted Critical
Publication of CA1233283A publication Critical patent/CA1233283A/fr
Expired legal-status Critical Current

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
    • 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)
CA000490970A 1985-09-18 1985-09-18 Circuit d'interface pour ligne d'abonne avec suppression du courant longitudinal Expired CA1233283A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA000490970A CA1233283A (fr) 1985-09-18 1985-09-18 Circuit d'interface pour ligne d'abonne avec suppression du courant longitudinal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA000490970A CA1233283A (fr) 1985-09-18 1985-09-18 Circuit d'interface pour ligne d'abonne avec suppression du courant longitudinal

Publications (1)

Publication Number Publication Date
CA1233283A true CA1233283A (fr) 1988-02-23

Family

ID=4131419

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000490970A Expired CA1233283A (fr) 1985-09-18 1985-09-18 Circuit d'interface pour ligne d'abonne avec suppression du courant longitudinal

Country Status (1)

Country Link
CA (1) CA1233283A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0517321A2 (fr) * 1991-06-06 1992-12-09 Koninklijke Philips Electronics N.V. Installation de télécommunication avec un circuit d'alimentation pour une ligne de télécommunication, et circuit d'alimentation pour ligne pour l'utilisation dans une installation de télécommunication
CN109817648A (zh) * 2017-11-21 2019-05-28 湖北东光电子股份有限公司 一种厚膜混合集成电路及其批量生产控制方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0517321A2 (fr) * 1991-06-06 1992-12-09 Koninklijke Philips Electronics N.V. Installation de télécommunication avec un circuit d'alimentation pour une ligne de télécommunication, et circuit d'alimentation pour ligne pour l'utilisation dans une installation de télécommunication
EP0517321A3 (en) * 1991-06-06 1993-06-16 Koninkl Philips Electronics Nv Telecommunication system comprising a supply circuit for a telecommunication line, and a supply circuit for a telecommunication line suitable for use in the telecommunication system
CN109817648A (zh) * 2017-11-21 2019-05-28 湖北东光电子股份有限公司 一种厚膜混合集成电路及其批量生产控制方法

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Legal Events

Date Code Title Description
MKEX Expiry