FR2371832A1 - Dispositif electronique de rupture de boucle a duree calibree pour poste telephonique - Google Patents

Dispositif electronique de rupture de boucle a duree calibree pour poste telephonique

Info

Publication number
FR2371832A1
FR2371832A1 FR7734743A FR7734743A FR2371832A1 FR 2371832 A1 FR2371832 A1 FR 2371832A1 FR 7734743 A FR7734743 A FR 7734743A FR 7734743 A FR7734743 A FR 7734743A FR 2371832 A1 FR2371832 A1 FR 2371832A1
Authority
FR
France
Prior art keywords
circuit
telephone set
electronic loop
scr
thyristor
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
FR7734743A
Other languages
English (en)
Other versions
FR2371832B1 (fr
Inventor
Gilbert Alfons
Francoise Van Campenhout
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.)
International Standard Electric Corp
Original Assignee
International 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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of FR2371832A1 publication Critical patent/FR2371832A1/fr
Application granted granted Critical
Publication of FR2371832B1 publication Critical patent/FR2371832B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
    • H04M1/312—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses pulses produced by electronic circuits

Landscapes

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

Abstract

L'invention concerne un dispositif électronique de commutation utilisée dans un poste teléphonique pour provoquer une ouverture de boucle d'une durée déterminée. Ce dispositif comprend un circuit de temporisation constitué par un condensateur (C1), un potentiomètre (R1) et une diode (D5) connectés en série, un thyristor (SCR), une diode Zener (Z2), un transistor (TR1) relié à la gâchette du thyristor via la diode Zener (Z1) et au circuit parallèle (R2C2) monté aux bornes du circuit gâchette-cathode du thyristor (SCR), un double commutateur (S11-S12). L'invention trouve une application dans les postes téléphoniques, notamment dans le circuit de commande de transfert, permettant de diminuer le coût de ce circuit en éliminant les composants électromécaniques.
FR7734743A 1976-11-18 1977-11-18 Dispositif electronique de rupture de boucle a duree calibree pour poste telephonique Granted FR2371832A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE848462 1976-11-18

Publications (2)

Publication Number Publication Date
FR2371832A1 true FR2371832A1 (fr) 1978-06-16
FR2371832B1 FR2371832B1 (fr) 1982-04-02

Family

ID=3861450

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7734743A Granted FR2371832A1 (fr) 1976-11-18 1977-11-18 Dispositif electronique de rupture de boucle a duree calibree pour poste telephonique

Country Status (2)

Country Link
FR (1) FR2371832A1 (fr)
GB (1) GB1535650A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2920944A1 (de) * 1979-05-21 1980-11-27 Deutsche Telephonwerk Kabel Schaltungsanordnung fuer eine zeitlich definierte leitungsunterbrechung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1290198B (de) * 1967-09-06 1969-03-06 Merk Gmbh Telefonbau Fried Schaltungsanordnung fuer Fernsprechapparate zur Verhinderung betruegerischer Impulsgabe
DE1565086A1 (de) * 1965-09-04 1970-01-22 Siemens Elektrogeraete Gmbh Stufenlose Leistungssteuerung fuer wechselstromgespeiste Waermegeraete,insbesondere Raumheizgeraete
FR2267670A1 (fr) * 1974-04-11 1975-11-07 Ericsson Telefon Ab L M
DE2432454A1 (de) * 1974-07-06 1976-01-22 Telefonbau & Normalzeit Gmbh Schaltungsanordnung zur bildung eines eine kurzzeitunterbrechung abgebenden zweipoles

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1565086A1 (de) * 1965-09-04 1970-01-22 Siemens Elektrogeraete Gmbh Stufenlose Leistungssteuerung fuer wechselstromgespeiste Waermegeraete,insbesondere Raumheizgeraete
DE1290198B (de) * 1967-09-06 1969-03-06 Merk Gmbh Telefonbau Fried Schaltungsanordnung fuer Fernsprechapparate zur Verhinderung betruegerischer Impulsgabe
FR2267670A1 (fr) * 1974-04-11 1975-11-07 Ericsson Telefon Ab L M
DE2432454A1 (de) * 1974-07-06 1976-01-22 Telefonbau & Normalzeit Gmbh Schaltungsanordnung zur bildung eines eine kurzzeitunterbrechung abgebenden zweipoles

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
EXBK/71 *
EXBK/75 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2920944A1 (de) * 1979-05-21 1980-11-27 Deutsche Telephonwerk Kabel Schaltungsanordnung fuer eine zeitlich definierte leitungsunterbrechung

Also Published As

Publication number Publication date
GB1535650A (en) 1978-12-13
FR2371832B1 (fr) 1982-04-02

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Legal Events

Date Code Title Description
ST Notification of lapse
RC Opposition against decision of lapse
DA Annulment of decision of lapse
TP Transmission of property
ST Notification of lapse