FR2552604B1 - TELEPHONE PROTECTION CIRCUIT AGAINST ELECTRICAL DISTURBANCES - Google Patents

TELEPHONE PROTECTION CIRCUIT AGAINST ELECTRICAL DISTURBANCES

Info

Publication number
FR2552604B1
FR2552604B1 FR8315336A FR8315336A FR2552604B1 FR 2552604 B1 FR2552604 B1 FR 2552604B1 FR 8315336 A FR8315336 A FR 8315336A FR 8315336 A FR8315336 A FR 8315336A FR 2552604 B1 FR2552604 B1 FR 2552604B1
Authority
FR
France
Prior art keywords
protection circuit
circuit against
against electrical
electrical disturbances
telephone protection
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
FR8315336A
Other languages
French (fr)
Other versions
FR2552604A1 (en
Inventor
Daniel Grandjean
Daniel Fleuret
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.)
EUROP COMPOSANTS ELECTRON
Original Assignee
EUROP COMPOSANTS ELECTRON
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 EUROP COMPOSANTS ELECTRON filed Critical EUROP COMPOSANTS ELECTRON
Priority to FR8315336A priority Critical patent/FR2552604B1/en
Publication of FR2552604A1 publication Critical patent/FR2552604A1/en
Application granted granted Critical
Publication of FR2552604B1 publication Critical patent/FR2552604B1/en
Expired 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Emergency Protection Circuit Devices (AREA)
FR8315336A 1983-09-27 1983-09-27 TELEPHONE PROTECTION CIRCUIT AGAINST ELECTRICAL DISTURBANCES Expired FR2552604B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8315336A FR2552604B1 (en) 1983-09-27 1983-09-27 TELEPHONE PROTECTION CIRCUIT AGAINST ELECTRICAL DISTURBANCES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8315336A FR2552604B1 (en) 1983-09-27 1983-09-27 TELEPHONE PROTECTION CIRCUIT AGAINST ELECTRICAL DISTURBANCES

Publications (2)

Publication Number Publication Date
FR2552604A1 FR2552604A1 (en) 1985-03-29
FR2552604B1 true FR2552604B1 (en) 1989-02-24

Family

ID=9292574

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8315336A Expired FR2552604B1 (en) 1983-09-27 1983-09-27 TELEPHONE PROTECTION CIRCUIT AGAINST ELECTRICAL DISTURBANCES

Country Status (1)

Country Link
FR (1) FR2552604B1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1437387A1 (en) * 1964-07-03 1968-11-28 Danfoss As Overvoltage protection device on telephone network lines
NL8006411A (en) * 1980-11-25 1982-06-16 Philips Nv DEVICE FOR PROTECTION AGAINST OVERHEATING BY OVERVOLTAGE OF A VOLTAGE LIMITING CIRCUIT.
FR2498387A1 (en) * 1981-01-16 1982-07-23 Thomson Csf Mat Tel Overvoltage protection circuit for telephone exchange - has zener diode and triac circuits controlled by overvoltage detector
FR2504323B1 (en) * 1981-04-16 1985-10-31 Radiotechnique Compelec SUBSCRIBER TELEPHONE EQUIPMENT PROVIDED WITH A SURGE PROTECTION DEVICE

Also Published As

Publication number Publication date
FR2552604A1 (en) 1985-03-29

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Legal Events

Date Code Title Description
ST Notification of lapse