BE843514A - Dispositif pour la protection d'un poste d'abonne - Google Patents

Dispositif pour la protection d'un poste d'abonne

Info

Publication number
BE843514A
BE843514A BE168399A BE168399A BE843514A BE 843514 A BE843514 A BE 843514A BE 168399 A BE168399 A BE 168399A BE 168399 A BE168399 A BE 168399A BE 843514 A BE843514 A BE 843514A
Authority
BE
Belgium
Prior art keywords
protection
subscriber station
subscriber
station
Prior art date
Application number
BE168399A
Other languages
English (en)
French (fr)
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 filed Critical
Publication of BE843514A publication Critical patent/BE843514A/xx

Links

Classifications

    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Protection Of Static Devices (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
BE168399A 1975-06-30 1976-06-28 Dispositif pour la protection d'un poste d'abonne BE843514A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NLAANVRAGE7507731,A NL174420C (nl) 1975-06-30 1975-06-30 Beveiligingsinrichting voor een telefoontoestel.

Publications (1)

Publication Number Publication Date
BE843514A true BE843514A (fr) 1976-12-28

Family

ID=19824045

Family Applications (1)

Application Number Title Priority Date Filing Date
BE168399A BE843514A (fr) 1975-06-30 1976-06-28 Dispositif pour la protection d'un poste d'abonne

Country Status (9)

Country Link
US (1) US4079211A (ja)
JP (1) JPS526003A (ja)
BE (1) BE843514A (ja)
DE (1) DE2627199C2 (ja)
FR (1) FR2316812A1 (ja)
GB (1) GB1514662A (ja)
IT (1) IT1062379B (ja)
NL (1) NL174420C (ja)
SE (1) SE403234B (ja)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE410695B (sv) * 1976-12-22 1979-10-22 Gullfiber Ab Horselskydd med hortelefoner
GB2064268B (en) * 1979-09-17 1983-10-26 Philips Nv Electronic signalling device for connection to a signal transmission line
US4264787A (en) * 1979-12-31 1981-04-28 Akzona Incorporated Hazardous voltage protection circuit
NL8001136A (nl) * 1980-02-26 1981-09-16 Philips Nv Schakeling voor toepassing in een telefoontoestel.
JPS60107995A (ja) * 1983-11-16 1985-06-13 Oki Electric Ind Co Ltd 通話路直流ル−プ回路
FR2556909B1 (fr) * 1983-12-14 1986-04-18 Radiotechnique Compelec Dispositif d'interface pour un poste telephonique
JPS6122717A (ja) * 1984-07-06 1986-01-31 富士通株式会社 過電流保護回路
DE3541974A1 (de) * 1985-11-28 1987-06-04 Danfoss As Schutzschaltung fuer die induktionsspule eines magnetisch-induktiven durchflussmessers
AU601737B2 (en) * 1986-04-30 1990-09-20 Alcatel Australia Limited Telephone protection circuit
WO1987006787A1 (en) * 1986-04-30 1987-11-05 Standard Telephones And Cables Pty. Limited Telephone protection circuit
US4941063A (en) * 1988-03-04 1990-07-10 Oneac Corporation Telephone lines overvoltage protection apparatus
US4944015A (en) * 1988-04-29 1990-07-24 Juve Ronald A Audio compression circuit for television audio signals
US4870530A (en) * 1988-06-27 1989-09-26 Advanced Micro Devices, Inc. Electrostatic discharge protection circuitry for any two external pins of an I.C. package
US5208718A (en) * 1988-12-12 1993-05-04 Alcatel N.V. Protection circuit
AU634187B2 (en) * 1988-12-12 1993-02-18 Alcatel Australia Limited A protection circuit
US4849846A (en) * 1988-12-16 1989-07-18 Northern Telecom Limited Telephone protection circuit
US5212617A (en) * 1989-12-29 1993-05-18 Robert Bosch Gmbh Circuit for compensating very fast current fluctuations
US5369711A (en) * 1990-08-31 1994-11-29 Bellsouth Corporation Automatic gain control for a headset
US5371803A (en) * 1990-08-31 1994-12-06 Bellsouth Corporation Tone reduction circuit for headsets
GB9021222D0 (en) * 1990-09-28 1990-11-14 Raychem Ltd Circuit protection device
US5493469A (en) * 1991-01-18 1996-02-20 Mildred A. Lace Surge protection for data lines
CA2095500C (en) * 1992-06-08 1997-09-23 Dimitris Jim Pelegris Telephone line overvoltage protection method and apparatus
JP3283964B2 (ja) * 1992-06-09 2002-05-20 ロックウェル・インターナショナル・コーポレイション モデムサージ保護回路およびサージ保護方法
US5369666A (en) * 1992-06-09 1994-11-29 Rockwell International Corporation Modem with digital isolation
JPH06334775A (ja) * 1993-05-19 1994-12-02 Canon Inc 網制御装置
US5315651A (en) * 1993-06-09 1994-05-24 Rockwell International Corporation Active surge rejection circuit
US5701352A (en) * 1994-07-14 1997-12-23 Bellsouth Corporation Tone suppression automatic gain control for a headset
US5905623A (en) * 1997-05-27 1999-05-18 Oneac Corporation Telephone and data overvoltage protection apparatus including a longitudinal transformer
EP1303897A1 (en) * 2000-06-26 2003-04-23 Premier Aviation, Inc. Method and apparatus for detecting electrical faults and isolating power source from the electrical faults
US6671144B1 (en) 2000-06-26 2003-12-30 Premier Aviation, Inc. Method and apparatus for detecting ground faults and for isolating power supply from the ground faults
US20090296300A1 (en) * 2008-05-30 2009-12-03 Casey Kelly C SCR circuit for protecting customer end of telephone line
US8451576B2 (en) * 2008-05-30 2013-05-28 Littelfuse, Inc. SCR circuit for protecting central office end of telephone line

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1288100A (fr) * 1961-02-06 1962-03-24 Thomson Houston Comp Francaise Perfectionnements aux stabilisateurs de tension
US3359434A (en) * 1965-04-06 1967-12-19 Control Data Corp Silicon controlled rectifier arrangement for improved shortcircuit protection
US3558830A (en) * 1969-04-09 1971-01-26 Communication Technology Inc Overvoltage transmission line protector
DE2058891B1 (de) * 1970-11-30 1972-05-25 Siemens Ag Schaltungsanordnung zum Schutz gegen UEberlastung fuer die Transistoren einer Leistungsendstufe
CA930488A (en) * 1971-08-27 1973-07-17 C. J. Cowpland Michael Power supply
JPS531123B2 (ja) * 1973-12-28 1978-01-14
CA1032221A (en) * 1974-06-14 1978-05-30 Mitel Canada Limited Telephone line impedance regulator

Also Published As

Publication number Publication date
IT1062379B (it) 1984-10-10
US4079211A (en) 1978-03-14
FR2316812B1 (ja) 1982-08-13
SE403234B (sv) 1978-07-31
NL174420B (nl) 1984-01-02
DE2627199A1 (de) 1977-02-03
SE7607333L (sv) 1976-12-31
GB1514662A (en) 1978-06-21
JPS526003A (en) 1977-01-18
NL7507731A (nl) 1977-01-03
FR2316812A1 (fr) 1977-01-28
DE2627199C2 (de) 1983-01-20
NL174420C (nl) 1984-06-01

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: N.V. PHILIPS' GLOEILAMPENFABRIEKEN

Effective date: 19850628