FR2777134B1 - Circuit de protection haute intensite pour interface telephonique - Google Patents

Circuit de protection haute intensite pour interface telephonique

Info

Publication number
FR2777134B1
FR2777134B1 FR9903831A FR9903831A FR2777134B1 FR 2777134 B1 FR2777134 B1 FR 2777134B1 FR 9903831 A FR9903831 A FR 9903831A FR 9903831 A FR9903831 A FR 9903831A FR 2777134 B1 FR2777134 B1 FR 2777134B1
Authority
FR
France
Prior art keywords
protection circuit
high intensity
telephone interface
intensity protection
telephone
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 - Fee Related
Application number
FR9903831A
Other languages
English (en)
Other versions
FR2777134A1 (fr
Inventor
Wayne Kwok Wai Wong
Saul Rodriguez
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.)
Harris Corp
Original Assignee
Harris 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 Harris Corp filed Critical Harris Corp
Publication of FR2777134A1 publication Critical patent/FR2777134A1/fr
Application granted granted Critical
Publication of FR2777134B1 publication Critical patent/FR2777134B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H04M1/738—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
    • 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
    • H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • H02H3/021—Details concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order
    • H02H3/023—Details concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order by short-circuiting
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • H02H3/087—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for dc applications
    • 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
    • H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
    • H02H9/026—Current limitation using PTC resistors, i.e. resistors with a large positive temperature coefficient

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Emergency Protection Circuit Devices (AREA)
FR9903831A 1998-04-03 1999-03-26 Circuit de protection haute intensite pour interface telephonique Expired - Fee Related FR2777134B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US5492298A 1998-04-03 1998-04-03

Publications (2)

Publication Number Publication Date
FR2777134A1 FR2777134A1 (fr) 1999-10-08
FR2777134B1 true FR2777134B1 (fr) 2004-12-03

Family

ID=21994402

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9903831A Expired - Fee Related FR2777134B1 (fr) 1998-04-03 1999-03-26 Circuit de protection haute intensite pour interface telephonique

Country Status (7)

Country Link
US (1) US6418222B2 (fr)
CN (1) CN1236211A (fr)
BR (1) BR9901587A (fr)
CA (1) CA2266322C (fr)
FR (1) FR2777134B1 (fr)
GB (1) GB2336046B (fr)
TW (1) TW401672B (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG74050A1 (en) * 1998-05-06 2000-07-18 Compaq Computer Corp Analog modem overcurrent protection against digital-line current
US6782098B1 (en) * 2000-04-07 2004-08-24 Uniden Corporation Protection circuit/method for subscriber telephone interface circuit
US7266195B1 (en) * 2003-03-04 2007-09-04 Silicon Laboratories Inc. Surge clamp protection circuit
AT500263B1 (de) 2004-03-15 2007-04-15 T I P S Messtechnik Gmbh Verfahren und schaltung zum schutz von prüfkontakten bei der hochstrom-messung von halbleiter-bauelementen
EP1701423B1 (fr) * 2005-03-03 2012-02-08 Airbus Operations GmbH Arrangement pour améliorer la résistance aux courts-circuits d'un appareil en utilisant un shunt
DE102005009789A1 (de) 2005-03-03 2006-09-14 Airbus Deutschland Gmbh Massnahme zur Erhöhung der Kurzschlussfestigkeit eines Gerätes durch Einführung paralleler Strompfade
US7822195B2 (en) * 2006-07-06 2010-10-26 Uniden Corporation Telephone interface circuit
US7940922B2 (en) * 2006-07-06 2011-05-10 Uniden Corporation Telephone interface circuit
US7995744B2 (en) * 2007-01-31 2011-08-09 Uniden Corporation Telephone interface circuit
US20080285741A1 (en) * 2007-05-16 2008-11-20 Uniden Corporation Telephone interface circuit
US8411848B2 (en) * 2008-11-11 2013-04-02 Uniden Corporation Telephone interface circuit for providing over-current and over-voltage protection
CN102761111A (zh) * 2011-04-28 2012-10-31 郭秀侠 一种新型保护电路控制装置
JP6725309B2 (ja) * 2016-04-28 2020-07-15 リンナイ株式会社 電源装置
CN110912390A (zh) * 2019-12-02 2020-03-24 上海联影医疗科技有限公司 打火电流抑制方法、电路及打火电流抑制电路的控制方法

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3624489A (en) 1970-02-02 1971-11-30 Litton Systems Inc Constant current variable load regulator
US3652922A (en) 1970-11-18 1972-03-28 Bell Telephone Labor Inc Constant current series regulator with control of bias current energizing control circuit of the regulator
GB1379223A (en) 1971-02-01 1975-01-02 Rca Corp Overcurrent protection circuit for a voltage regulator
GB1449607A (en) * 1972-10-03 1976-09-15 Davis Son Derby Ltd John Electrical power supply systems
CA1032221A (fr) * 1974-06-14 1978-05-30 Mitel Canada Limited Regulateur d'impedance de ligne telephonique
JPS5356903A (en) * 1976-11-02 1978-05-23 Nippon Telegr & Teleph Corp <Ntt> Automatic level control circuit for telephone set
GB2160721B (en) * 1984-05-19 1987-08-19 Measurement Tech Ltd Protection of electrical/electronic equipment
IT1215281B (it) * 1985-06-28 1990-01-31 Ates Componenti Elettron Apparecchio e metodo per la protezione da transitori di tensione/corrente.
US4903295A (en) * 1987-08-07 1990-02-20 Gte Products Corporation Compact solid state station protector device
US5208718A (en) * 1988-12-12 1993-05-04 Alcatel N.V. Protection circuit
US5179488A (en) * 1990-07-26 1993-01-12 Rosemount Inc. Process control instrument with loop overcurrent circuit
IT1244074B (it) 1990-10-24 1994-07-05 Sgs Thomson Microelectronics Dispositivo di protezione di circuiti elettrici e/o elettronici di telefoni atto a limitare la potenza dissipata in essi.
WO1992019062A1 (fr) * 1991-04-15 1992-10-29 Northern Telecom Limited Circuit de limitation en courant pour l'interface entre abonnes
US5237483A (en) * 1991-10-01 1993-08-17 Reliance Comm/Tec Corporation Protector system for low voltage power feed
US5357089A (en) 1993-02-26 1994-10-18 Harris Corporation Circuit and method for extending the safe operating area of a BJT
NZ260129A (en) * 1993-04-08 1996-08-27 Alcatel Australia Controlling power dissipation in telephone semiconductor line switch
US5745322A (en) * 1995-11-28 1998-04-28 Raychem Corporation Circuit protection arrangements using ground fault interrupter for overcurrent and overvoltage protection

Also Published As

Publication number Publication date
CA2266322C (fr) 2011-10-25
GB2336046B (en) 2002-04-17
GB2336046A (en) 1999-10-06
GB9906998D0 (en) 1999-05-19
US20010001619A1 (en) 2001-05-24
FR2777134A1 (fr) 1999-10-08
CA2266322A1 (fr) 1999-10-03
CN1236211A (zh) 1999-11-24
US6418222B2 (en) 2002-07-09
BR9901587A (pt) 2000-06-06
TW401672B (en) 2000-08-11

Similar Documents

Publication Publication Date Title
FI971708A (fi) Monitoiminen viestintälaite
ID22854A (id) Campuran solder bebas timbel
FI960894A0 (fi) Päätelaite tietoliikennepalvelun käyttämiseksi
DE69732725D1 (de) Telefonleitungs-Interface-Schutzbauelement
FR2777134B1 (fr) Circuit de protection haute intensite pour interface telephonique
FR2773265B1 (fr) Circuit de protection d&#39;interface d&#39;abonnes
FR2739730B1 (fr) Prise extraplate pour telecommunications
DE69942730D1 (de) Punkt-zu-Punkt-zu-Punkt-Anruf
GB9824201D0 (en) Extension device for telephone
FI103249B1 (fi) Puhelaite kuulosuojainta varten
DE69910506D1 (de) Multifunktionsterminal
DE59904958D1 (de) Telekommunikationsendgerät
DE69731303D1 (de) Teilnehmerleitungsschnittstellenschaltung
DE59906602D1 (de) Anschlussklemme
DE59812774D1 (de) Konfigurierbare Telekommunikationsendeinrichtung
DE59907062D1 (de) Anschlussklemme
DE59913350D1 (de) Telekommunikationsendgerät
TW391592U (en) New telephone device
DE59902413D1 (de) Schneidklemme
FR2693335B1 (fr) Circuit de sonnerie notamment pour poste telephonique.
FR2791817B1 (fr) Circuit de surete pour connecteur
FR2779876B1 (fr) Accessoire de derivation pour installation electrique, et installation electrique correspondante
DE59903658D1 (de) Schneidklemme
DE59905319D1 (de) Schutzschaltungsanordnung
DE69934567D1 (de) Kommunikationsapparat

Legal Events

Date Code Title Description
ST Notification of lapse

Effective date: 20141128