FR2419625A1 - Dispositif de protection contre les surtensions de ligne telephonique - Google Patents

Dispositif de protection contre les surtensions de ligne telephonique

Info

Publication number
FR2419625A1
FR2419625A1 FR7806400A FR7806400A FR2419625A1 FR 2419625 A1 FR2419625 A1 FR 2419625A1 FR 7806400 A FR7806400 A FR 7806400A FR 7806400 A FR7806400 A FR 7806400A FR 2419625 A1 FR2419625 A1 FR 2419625A1
Authority
FR
France
Prior art keywords
zener diode
line
subscriber equipment
triac
telephone subscriber
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
FR7806400A
Other languages
English (en)
Other versions
FR2419625B1 (fr
Inventor
Daniel Michel Auguste Fe Bolus
Jean-Pierre Chevillon
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 FR7806400A priority Critical patent/FR2419625A1/fr
Priority to BE2/57642A priority patent/BE874661R/fr
Publication of FR2419625A1 publication Critical patent/FR2419625A1/fr
Application granted granted Critical
Publication of FR2419625B1 publication Critical patent/FR2419625B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
    • H02H9/041—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using a short-circuiting device
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/738—Interface circuits for coupling substations to external telephone lines
    • H04M1/74—Interface circuits for coupling substations to external telephone lines with means for reducing interference; with means for reducing effects due to line faults
    • H04M1/745—Protection devices or circuits for voltages surges on the line
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/18—Automatic or semi-automatic exchanges with means for reducing interference or noise; with means for reducing effects due to line faults with means for protecting lines

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

L'invention concerne un dispositif de protection contre les surtensions de ligne téléphonique, alternatives ou continues, brèves ou permanentes. Le principe du dispositif de protection selon l'invention consiste à établir, en cas de surtension sur l'un des fils de la ligne, un court-circuit entre le fil et la masse en amont des circuits du joncteur ou de l'équipement d'abonné. Le court-circuit est obtenu par l'intermédiaire d'un triac déclenché par une double diode Zener. Une résistance à coefficient de température positif, jouant le rôle d'élément de dissipation, est placée en série sur le fil, en amont du court-circuit. Application à la téléphonie.
FR7806400A 1978-03-07 1978-03-07 Dispositif de protection contre les surtensions de ligne telephonique Granted FR2419625A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7806400A FR2419625A1 (fr) 1978-03-07 1978-03-07 Dispositif de protection contre les surtensions de ligne telephonique
BE2/57642A BE874661R (fr) 1978-03-07 1979-03-07 Dispositif de protection pour joncteur electronique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7806400A FR2419625A1 (fr) 1978-03-07 1978-03-07 Dispositif de protection contre les surtensions de ligne telephonique

Publications (2)

Publication Number Publication Date
FR2419625A1 true FR2419625A1 (fr) 1979-10-05
FR2419625B1 FR2419625B1 (fr) 1982-05-14

Family

ID=9205412

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7806400A Granted FR2419625A1 (fr) 1978-03-07 1978-03-07 Dispositif de protection contre les surtensions de ligne telephonique

Country Status (2)

Country Link
BE (1) BE874661R (fr)
FR (1) FR2419625A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2498387A1 (fr) * 1981-01-16 1982-07-23 Thomson Csf Mat Tel Dispositif de protection contre les surtensions pour circuit terminal de centre telephonique
EP0361697A2 (fr) * 1988-09-29 1990-04-04 Nortel Networks Corporation Dispositifs et systèmes de protection pour lignes téléphoniques
DE102022206731A1 (de) 2022-06-30 2024-01-04 Gts Deutschland Gmbh Schutzvorrichtung zum schutz einer elektrischen gleisfeld-infrastruktur, gleisfeld-energieversorgungseinrichtung und verfahren zur begrenzung von potentialverschiebungen in einer elektrischen gleisfeld-infrastruktur

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2034741A1 (fr) * 1969-03-07 1970-12-11 M & T Chemicals Inc
US3878434A (en) * 1973-12-10 1975-04-15 Leeds & Northrup Co Power-limiting electrical barrier device
FR2298215A1 (fr) * 1975-01-16 1976-08-13 Int Standard Electric Corp Circuit de protection contre les surtensions pour reseaux de commutation electronique
DE2608171A1 (de) * 1975-02-28 1976-09-16 Hitachi Ltd Sprechweg-anordnung
FR2309102A1 (fr) * 1975-04-21 1976-11-19 Electronique Appliquee Perfectionnements aux autocommutateurs electroniques prives
FR2351526A1 (fr) * 1976-05-13 1977-12-09 Charbonnages De France Dispositif de protection contre les surtensions d'un reseau a neutre isole
FR2377132A1 (fr) * 1977-01-11 1978-08-04 Labo Cent Telecommunicat Dispositif de protection pour joncteur electronique

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2034741A1 (fr) * 1969-03-07 1970-12-11 M & T Chemicals Inc
US3878434A (en) * 1973-12-10 1975-04-15 Leeds & Northrup Co Power-limiting electrical barrier device
FR2298215A1 (fr) * 1975-01-16 1976-08-13 Int Standard Electric Corp Circuit de protection contre les surtensions pour reseaux de commutation electronique
DE2608171A1 (de) * 1975-02-28 1976-09-16 Hitachi Ltd Sprechweg-anordnung
FR2309102A1 (fr) * 1975-04-21 1976-11-19 Electronique Appliquee Perfectionnements aux autocommutateurs electroniques prives
FR2351526A1 (fr) * 1976-05-13 1977-12-09 Charbonnages De France Dispositif de protection contre les surtensions d'un reseau a neutre isole
FR2377132A1 (fr) * 1977-01-11 1978-08-04 Labo Cent Telecommunicat Dispositif de protection pour joncteur electronique

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2498387A1 (fr) * 1981-01-16 1982-07-23 Thomson Csf Mat Tel Dispositif de protection contre les surtensions pour circuit terminal de centre telephonique
EP0361697A2 (fr) * 1988-09-29 1990-04-04 Nortel Networks Corporation Dispositifs et systèmes de protection pour lignes téléphoniques
EP0361697A3 (fr) * 1988-09-29 1990-06-13 Nortel Networks Corporation Dispositifs et systèmes de protection pour lignes téléphoniques
DE102022206731A1 (de) 2022-06-30 2024-01-04 Gts Deutschland Gmbh Schutzvorrichtung zum schutz einer elektrischen gleisfeld-infrastruktur, gleisfeld-energieversorgungseinrichtung und verfahren zur begrenzung von potentialverschiebungen in einer elektrischen gleisfeld-infrastruktur

Also Published As

Publication number Publication date
BE874661R (fr) 1979-09-07
FR2419625B1 (fr) 1982-05-14

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Legal Events

Date Code Title Description
ST Notification of lapse