ES2003447A6 - Circuito integrado para la proteccion contra sobrevoltajes en lineas de abonados telefonicos - Google Patents
Circuito integrado para la proteccion contra sobrevoltajes en lineas de abonados telefonicosInfo
- Publication number
- ES2003447A6 ES2003447A6 ES8602860A ES8602860A ES2003447A6 ES 2003447 A6 ES2003447 A6 ES 2003447A6 ES 8602860 A ES8602860 A ES 8602860A ES 8602860 A ES8602860 A ES 8602860A ES 2003447 A6 ES2003447 A6 ES 2003447A6
- Authority
- ES
- Spain
- Prior art keywords
- overvoltage protection
- circuit
- integrated circuit
- telephone subscriber
- subscriber loop
- 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
Links
- 238000007796 conventional method Methods 0.000 abstract 1
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
- 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)
- Interface Circuits In Exchanges (AREA)
Abstract
SE DESCRIBE UN CIRCUITO PROTECTOR DE SOBREVOLTAJES PARA SISTEMAS DE COMUNICACIONES PARA PROTEGER INSTALACIONES CONTRA CRUCES DE ENERGIA EN LAS LINEAS DE LAS COMPAÑIAS ELECTRICAS. SE UTILIZA UN CIRCUITO DE ENCLAVAMIENTO TEMPORIZADO (60) PARA ACTIVAR UNA PLURALIDAD DE SCR DE DIRECCION (42, 43, 45, 47) QUE <CORTOCIRCUITAN> EL SOBREVOLTAJE. EL EMPLEO DE UN CIRCUITO DE ENCLAVAMIENTO PARA ACTIVAR EL DISPOSITIVO DE DIRECCION, EN LUGAR DE LA TECNICA TRADICIONAL DE UTILIZAR LA CORRIENTE REAL DE LA LINEA DE SOBREVOLTAJE, PERMITE UTILIZAR DISPOSITIVOS MAS PEQUEÑOS, REDUCIENDO ASI TANTO EL TAMAÑO DEL CIRCUITO COMO LA DISIPACION DE ENERGIA DEL CIRCUITO.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/794,166 US4644437A (en) | 1985-11-01 | 1985-11-01 | Telephone subscriber loop overvoltage protection integrated circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2003447A6 true ES2003447A6 (es) | 1988-11-01 |
Family
ID=25161895
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES8602860A Expired ES2003447A6 (es) | 1985-11-01 | 1986-10-31 | Circuito integrado para la proteccion contra sobrevoltajes en lineas de abonados telefonicos |
Country Status (7)
Country | Link |
---|---|
US (1) | US4644437A (es) |
EP (1) | EP0248035B1 (es) |
JP (1) | JPH061941B2 (es) |
CA (1) | CA1285983C (es) |
DE (1) | DE3676696D1 (es) |
ES (1) | ES2003447A6 (es) |
WO (1) | WO1987002837A1 (es) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AR240631A1 (es) * | 1986-06-06 | 1990-06-30 | Siemens Ag | Disposicion de circuito para proteger circuitos electronicos de interfase de circuitos de conexion de abonado de una red telefonica tiempo-multiplex digital |
US4736268A (en) * | 1986-12-18 | 1988-04-05 | Westinghouse Electric Corp. | High frequency AC solid state switch |
US4876620A (en) * | 1988-09-29 | 1989-10-24 | Northern Telecom Limited | Protection devices and arrangements for telephone lines |
US4991105A (en) * | 1988-12-21 | 1991-02-05 | Accu-Scan, Inc. | Microprocessor controlled ground system monitor |
JP3142617B2 (ja) * | 1991-11-27 | 2001-03-07 | 新電元工業株式会社 | サージ防護素子 |
US5483086A (en) * | 1993-04-20 | 1996-01-09 | Shindengen Electric Manufacturing Co., Ltd. | Four layer semiconductor surge protector having plural short-circuited junctions |
FI98255C (fi) * | 1994-04-14 | 1997-05-12 | Kone Oy | Ylijännitesuojaus |
US5490215A (en) * | 1994-05-12 | 1996-02-06 | Oneac Corporation | Telecommunications T1 carrier overvoltage and fiber to curb power protector |
US6061445A (en) * | 1997-09-15 | 2000-05-09 | Conexant Systems, Inc. | Surge protection data access arrangement (DAA) |
US6104591A (en) * | 1998-03-09 | 2000-08-15 | Teccor Electronics, Inc. | Telephone line protection element |
US6088446A (en) * | 1998-05-06 | 2000-07-11 | Actiontec Electronics, Inc. | Protection circuit for use with a telephone appliance and methods of use |
US6040969A (en) | 1998-08-04 | 2000-03-21 | Electronic Systems Protection, Inc. | Power filter circuit responsive to supply system fault conditions |
US6618233B1 (en) * | 1999-08-06 | 2003-09-09 | Sarnoff Corporation | Double triggering mechanism for achieving faster turn-on |
CN1321457C (zh) * | 2001-11-07 | 2007-06-13 | 新电元件工业株式会社 | 浪涌保护半导体装置 |
US6639779B2 (en) | 2001-12-19 | 2003-10-28 | Oneac Corporation | Frequency selective transient voltage protector |
US7283341B2 (en) * | 2003-10-27 | 2007-10-16 | Patricio Lagos Lehuede | Protector for over tensions of industrial and home networks |
US20070263332A1 (en) * | 2006-05-11 | 2007-11-15 | Silicon Laboratories, Inc. | System and method for high voltage protection of powered devices |
US7773354B2 (en) * | 2006-12-22 | 2010-08-10 | Silicon Laboratories, Inc. | Voltage protection circuit for power supply device and method therefor |
US8188706B2 (en) * | 2007-02-16 | 2012-05-29 | Broadcom Corporation | Power management unit with battery detection controller and switchable regulator block |
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 |
EP3518364B1 (en) * | 2013-01-05 | 2022-05-11 | MTD Products Inc | Alternator overvoltage protection circuit |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5217216B2 (es) * | 1972-02-20 | 1977-05-13 | ||
US3814987A (en) * | 1972-12-21 | 1974-06-04 | Johnson Service Co | Overvoltage protection circuit |
US3790856A (en) * | 1973-06-04 | 1974-02-05 | Gte Automatic Electric Lab Inc | Overvoltage protection circuit for dual outputs of opposite polarity |
US3904931A (en) * | 1973-08-03 | 1975-09-09 | Rca Corp | Overvoltage protection circuit |
NL7614118A (nl) * | 1976-12-20 | 1978-06-22 | Philips Nv | Schakeling voor het beschermen van telefoon- lijnen. |
US4106070A (en) * | 1977-02-01 | 1978-08-08 | Bell Telephone Laboratories, Incorporated | Hazardous voltage protector for telephone line |
US4156263A (en) * | 1977-12-29 | 1979-05-22 | Bell Telephone Laboratories, Incorporated | Hazardous voltage protector for telephone line |
SE414357B (sv) * | 1978-08-17 | 1980-07-21 | Asea Ab | Overspenningsskydd for skydd av halvledarkomponenter av lageffekttyp |
SE426002B (sv) * | 1980-12-23 | 1982-11-29 | Ellemtel Utvecklings Ab | Anordning for skydd av en krets i en telekommunikationsutrustning mot overspenningar |
US4377832A (en) * | 1981-01-09 | 1983-03-22 | Motorola, Inc. | Voltage transient suppressor circuit |
FR2504323B1 (fr) * | 1981-04-16 | 1985-10-31 | Radiotechnique Compelec | Poste telephonique d'abonne muni d'un dispositif de protection contre les surtensions |
US4408248A (en) * | 1981-12-30 | 1983-10-04 | Bell Telephone Laboratories, Incorporated | Protection circuit |
JPS59500348A (ja) * | 1982-03-06 | 1984-03-01 | ガウス,ハリ− | 汎用電源で駆動される器具の安全装置 |
-
1985
- 1985-11-01 US US06/794,166 patent/US4644437A/en not_active Expired - Fee Related
-
1986
- 1986-10-15 JP JP61505566A patent/JPH061941B2/ja not_active Expired - Lifetime
- 1986-10-15 DE DE8686906617T patent/DE3676696D1/de not_active Expired - Fee Related
- 1986-10-15 WO PCT/US1986/002172 patent/WO1987002837A1/en active IP Right Grant
- 1986-10-15 EP EP86906617A patent/EP0248035B1/en not_active Expired
- 1986-10-22 CA CA000521116A patent/CA1285983C/en not_active Expired - Fee Related
- 1986-10-31 ES ES8602860A patent/ES2003447A6/es not_active Expired
Also Published As
Publication number | Publication date |
---|---|
WO1987002837A1 (en) | 1987-05-07 |
CA1285983C (en) | 1991-07-09 |
JPH061941B2 (ja) | 1994-01-05 |
JPS63501330A (ja) | 1988-05-19 |
EP0248035B1 (en) | 1990-12-27 |
US4644437A (en) | 1987-02-17 |
EP0248035A1 (en) | 1987-12-09 |
DE3676696D1 (de) | 1991-02-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
SA6 | Expiration date (snapshot 920101) |
Free format text: 2006-10-31 |
|
FD1A | Patent lapsed |
Effective date: 20001009 |