FR2442557A1 - Pont d'alimentation electronique pour ligne telephonique - Google Patents

Pont d'alimentation electronique pour ligne telephonique

Info

Publication number
FR2442557A1
FR2442557A1 FR7832931A FR7832931A FR2442557A1 FR 2442557 A1 FR2442557 A1 FR 2442557A1 FR 7832931 A FR7832931 A FR 7832931A FR 7832931 A FR7832931 A FR 7832931A FR 2442557 A1 FR2442557 A1 FR 2442557A1
Authority
FR
France
Prior art keywords
voltage
power supply
transistors
regulation
telephone line
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.)
Pending
Application number
FR7832931A
Other languages
English (en)
Inventor
Daniel Michel Auguste Fe Bolus
Jean-Charles Comte
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.)
Laboratoire Central de Telecommunications SA
Original Assignee
Laboratoire Central de Telecommunications SA
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 Laboratoire Central de Telecommunications SA filed Critical Laboratoire Central de Telecommunications SA
Priority to FR7832931A priority Critical patent/FR2442557A1/fr
Priority to DE19792937424 priority patent/DE2937424A1/de
Priority to BE2/58218A priority patent/BE880144R/fr
Publication of FR2442557A1 publication Critical patent/FR2442557A1/fr
Pending 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

La présente invention concerne un pont d'alimentation électronique destiné à alimenter une ligne téléphonique. Le pont d'alimentation comporte deux dispositifs de découplage placés respectivement dans chacune des branches d'une source de tension. L'impédance des dispositifs de découplage est automatiquement contrôlée du point de vue alternatif de façon qu'elle soit grande pour les signaux de mode symétrique et faible pour les signaux de mode commun. Application aux centraux téléphoniques électroniques.
FR7832931A 1978-11-22 1978-11-22 Pont d'alimentation electronique pour ligne telephonique Pending FR2442557A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR7832931A FR2442557A1 (fr) 1978-11-22 1978-11-22 Pont d'alimentation electronique pour ligne telephonique
DE19792937424 DE2937424A1 (de) 1978-11-22 1979-09-15 Schaltungsanordnung fuer eine eine fernsprechleitung speisende speisebruecke
BE2/58218A BE880144R (fr) 1978-11-22 1979-11-20 Pont d'alimentation electronique pour ligne telephonique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7832931A FR2442557A1 (fr) 1978-11-22 1978-11-22 Pont d'alimentation electronique pour ligne telephonique

Publications (1)

Publication Number Publication Date
FR2442557A1 true FR2442557A1 (fr) 1980-06-20

Family

ID=9215187

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7832931A Pending FR2442557A1 (fr) 1978-11-22 1978-11-22 Pont d'alimentation electronique pour ligne telephonique

Country Status (3)

Country Link
BE (1) BE880144R (fr)
DE (1) DE2937424A1 (fr)
FR (1) FR2442557A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0057840A1 (fr) * 1981-02-06 1982-08-18 Felten & Guilleaume Fernmeldeanlagen GmbH Circuit d'abonné

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7903662A (nl) * 1979-05-10 1980-11-12 Philips Nv Lijncircuit.
AU554389B2 (en) * 1981-09-18 1986-08-21 Alcatel N.V. Control and filter circuit
DE3744130C2 (de) * 1987-12-24 1996-04-11 Licentia Gmbh Schaltungsanordnung zur Reduktion von Längsspannungen auf Zweidrahtleitungen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT291356B (de) * 1969-05-09 1971-07-12 Itt Austria Schaltungsanordnung zur selbsttätigen Aufrechterhaltung der Symmetrie von Speiseschaltungen für Teilnehmerstellen in Fernmelde-Anlagen unter Verwendung von Transistoren
DE2838038A1 (de) * 1978-08-31 1980-03-13 Siemens Ag Einspeiseeinheit mit hohem ausgangsseitigen innenwiderstand
DE2839892C2 (de) * 1978-09-13 1982-06-09 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung zur Durchführung eines Verfahrens zur spulen-, relaiskontakt- und transformatorfreien Rufstrom- und Schleifenstromeinspeisung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0057840A1 (fr) * 1981-02-06 1982-08-18 Felten & Guilleaume Fernmeldeanlagen GmbH Circuit d'abonné

Also Published As

Publication number Publication date
DE2937424A1 (de) 1980-06-04
BE880144R (fr) 1980-05-20

Similar Documents

Publication Publication Date Title
TW327256B (en) Low voltage operational amplifier input stage and method
ES8202459A1 (es) Un circuito amplificador del tipo de clase b
GB1078943A (en) Comparator
FR2442557A1 (fr) Pont d'alimentation electronique pour ligne telephonique
EP0104852A3 (fr) Amplificateur audio
GB1334163A (en) Telephone circuits utilizing active elements
ES8102434A1 (es) Un dispositivo amplificador perfeccionado
GB1437565A (en) Wide dynamic range logarithmic amplifier arrangement
JPS6458106A (en) Differential input stage, digital differential line receiver and operational amplifier
GB1248857A (en) An audio-frequency dynamic sound range compressor
JPS5643808A (en) Signal converting circuit
FR2312145A1 (fr) Circuit pour servir d'interface entre deux parties d'une voie de communication
GB1256809A (fr)
ES476608A1 (es) Un amplificador puente bidireccional.
GB1277768A (en) Improvements in or relating to signal transmitting circuit arrangements
FR2417889A1 (fr) Amplificateur avec montage en pont symetrique
GB1215336A (en) Absolute value function generator
TW375705B (en) Charging a sense amplifier
JPS57133707A (en) Bias circuit for power amplifier
GB1531692A (en) Telecommunication substation
GB878649A (en) Improvements in circuit arrangements for clamping a signal to a reference potential
GB1536023A (en) Transistor amplifier circuits
GB965027A (en) Intelligence transmission systems
JPS5728457A (en) Ring trip circuit
GB1420115A (en) Ac voltage signal amplivying arrangement