FR2466923A1 - Circuit de generation et d'injection de sonnerie - Google Patents

Circuit de generation et d'injection de sonnerie Download PDF

Info

Publication number
FR2466923A1
FR2466923A1 FR7924809A FR7924809A FR2466923A1 FR 2466923 A1 FR2466923 A1 FR 2466923A1 FR 7924809 A FR7924809 A FR 7924809A FR 7924809 A FR7924809 A FR 7924809A FR 2466923 A1 FR2466923 A1 FR 2466923A1
Authority
FR
France
Prior art keywords
terminal
extension
module
switch
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.)
Granted
Application number
FR7924809A
Other languages
English (en)
French (fr)
Other versions
FR2466923B1 (enExample
Inventor
Raphael Jacques Simon Roux
Jose Alain Yvon Paulet
Bernard Gilles
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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Priority to FR7924809A priority Critical patent/FR2466923A1/fr
Publication of FR2466923A1 publication Critical patent/FR2466923A1/fr
Application granted granted Critical
Publication of FR2466923B1 publication Critical patent/FR2466923B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/023—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone by reversing the polarity of the current at the exchange

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
FR7924809A 1979-10-05 1979-10-05 Circuit de generation et d'injection de sonnerie Granted FR2466923A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7924809A FR2466923A1 (fr) 1979-10-05 1979-10-05 Circuit de generation et d'injection de sonnerie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7924809A FR2466923A1 (fr) 1979-10-05 1979-10-05 Circuit de generation et d'injection de sonnerie

Publications (2)

Publication Number Publication Date
FR2466923A1 true FR2466923A1 (fr) 1981-04-10
FR2466923B1 FR2466923B1 (enExample) 1982-12-31

Family

ID=9230347

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7924809A Granted FR2466923A1 (fr) 1979-10-05 1979-10-05 Circuit de generation et d'injection de sonnerie

Country Status (1)

Country Link
FR (1) FR2466923A1 (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0051446A1 (en) * 1980-10-28 1982-05-12 British Telecommunications Improvements in or relating to line interface circuits
EP0136077A3 (en) * 1983-08-26 1986-08-27 Danby Systems Limited Telephone line interface circuit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4137570A (en) * 1977-10-31 1979-01-30 Exxon Research & Engineering Co. Waveform synthesizer
GB2007463A (en) * 1977-10-17 1979-05-16 Trt Telecom Radio Electr Telephone subscriber's line circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2007463A (en) * 1977-10-17 1979-05-16 Trt Telecom Radio Electr Telephone subscriber's line circuit
US4137570A (en) * 1977-10-31 1979-01-30 Exxon Research & Engineering Co. Waveform synthesizer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0051446A1 (en) * 1980-10-28 1982-05-12 British Telecommunications Improvements in or relating to line interface circuits
WO1982001635A1 (en) * 1980-10-28 1982-05-13 Lyne Francis T Improvements in or relating to line interface circuits
EP0136077A3 (en) * 1983-08-26 1986-08-27 Danby Systems Limited Telephone line interface circuit

Also Published As

Publication number Publication date
FR2466923B1 (enExample) 1982-12-31

Similar Documents

Publication Publication Date Title
EP1085659B1 (fr) Convertisseur numérique-analogique en courant
EP0555432A1 (fr) Dispositif electronique de conversion d'energie electrique.
FR2674385A1 (fr) Dispositif d'isolement galvanique pour signaux electriques continus ou susceptibles de comporter une composante continue.
EP0181664A1 (fr) Comparateur synchronisé
FR2702317A1 (fr) Circuit pompe de charge à faible consommation, faible bruit et synthétiseur de fréquence équipé d'un tel circuit.
FR2608858A1 (fr) Procede et dispositif pour la connexion d'une batterie de stockage d'energie a un convertisseur d'ascenseur
FR2481545A1 (fr) Interrupteur statique haute tension, applicable notamment a un generateur haute tension commutable
EP0194177B1 (fr) Circuit d'interface de ligne d'abonné téléphonique avec mode de veille à puissance réduite
FR2583601A1 (fr) Circuit indicateur d'etats de ligne
FR2550028A1 (fr) Circuit d'alimentation delivrant des tensions continues d'egale grandeur mais de polarite opposee, notamment pour appareils de reproduction sonore a bord d'automobiles
FR2466923A1 (fr) Circuit de generation et d'injection de sonnerie
EP0011534B1 (fr) Procédé et dispositif de traitement d'un signal analogique, notamment pseudopériodique
US4314106A (en) Line circuit
US3683118A (en) Interruptor for ringing signals from automatic telephone exchanges
EP1410488B1 (fr) Dispositif de conversion d'energie
FR2462006A1 (fr) Dispositif pour augmenter l'inductance parallele d'un transformateur
US4032718A (en) Four-wire integrable hybrid
FR2478917A1 (fr) Circuit de deviation verticale pour recepteur de television en couleur
EP0032089B1 (fr) Dispositif d'alimentation d'une charge électrique, notamment d'une lampe à décharge
EP0101629A1 (fr) Ensemble statique de conversion d'énergie électrique à semi-conducteurs
EP1685643A1 (fr) Convertisseur elevateur de tension
GB2052923A (en) Direct current telegraphy systems
FR2701339A1 (fr) Dispositif d'alimentation électrique délivrant une tension aux polarités alternées de manière cyclique.
CH619578A5 (enExample)
EP4607779A1 (fr) Controle analogique non-lineaire de circuit electrique multi-phases

Legal Events

Date Code Title Description
ST Notification of lapse