JPH09502600A - 加入者線インタフェース回路の過電圧保護装置 - Google Patents
加入者線インタフェース回路の過電圧保護装置Info
- Publication number
- JPH09502600A JPH09502600A JP8503073A JP50307396A JPH09502600A JP H09502600 A JPH09502600 A JP H09502600A JP 8503073 A JP8503073 A JP 8503073A JP 50307396 A JP50307396 A JP 50307396A JP H09502600 A JPH09502600 A JP H09502600A
- Authority
- JP
- Japan
- Prior art keywords
- interface circuit
- subscriber line
- line interface
- diode
- supply voltage
- 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
Links
Classifications
-
- 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
-
- 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
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0038—Details of emergency protective circuit arrangements concerning the connection of the detecting means, e.g. for reducing their number
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Emergency Protection Circuit Devices (AREA)
- Interface Circuits In Exchanges (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.2つの入力端子(A、B)で発生し、加入者線インタフェース回路(1) の供給電圧電源の電圧を越える過電圧に対して加入者線インタフェース回路(1 )を保護する装置であって、抵抗(RA、RB)が個々の入力線(A、B)と直 列に加入者線インタフェース回路の個々の入力端子(LA、LB)に接続され、 各入力端子(LA、LB)が各々の第1のダイオード(DA1、DB1)のアノ ードに接続され、第1のダイオードのカソードが供給電圧電源の正の端子に接続 されている装置において、各々の入力端子(LA、LB)がさらに個々の第2の ダイオード(DA2、DB2)のカソードに接続され、そして前記第2のダイオ ードのアノードがこの第2のダイオードと共通となっているサイリスタ(TAB )のカソードに接続され、サイリスタのアノードが供給電圧源の正の端子に接続 され、前記サイリスタのゲートが前記供給電圧電源の負の端子に接続されている ことを特徴とする前記の装置。 2.2つの入力端子(A、B)で発生し、加入者線インタフェース回路(1) の供給電圧電源の電圧を越える過電圧に対して加入者線インタフェース回路(1 )を保護する装置であって、抵抗(RA、RB)が個々の入力線(A、B)と直 列に1次の過電圧保護器(4)の個々の入力端子(15、16)に接続され、1 次の過電圧保護器は縦続に2次過電圧保護器(3)に接続され、2次過電圧保護 器は縦続に3次の過電圧保護器(2)に接続され、3次の過電圧保護器は加入者 線インタフエース回路に縦続に接続されており、2次過電圧保護器は装置のアー スに接続され、そして3次の過電圧保護器は各入力線として第1のダイオード( DA1、DB1)を有し、加入者線インタフェース回路の個々の入力端子(LA 、LB)は個々の第1のダイオード(DA1、DB1)のアノードに接続され、 第1のダイオードのカソードが供給電圧電源の正の端子に接続された前記の装置 であって、3次の過電圧保護器(2)がさらにサイリスタ(TAB)と各入力線 (A、B)に対する第2のダイオード(DA2、DB2)を有し、加入者線イン タフェース回路(1)の各々の入力端子(LA、LB)がさらに個々の第2のダ イオード(DA2、DB2)のカソードに接続され、第2のダイオードのアノー ドがサイリスタのカソードに接続され、そのアノードが供給電圧電源の正の端子 に接続され、そしてそのゲートが供給電圧電源の負の端子に接続されていること を特徴とする前記の装置。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9402277A SE519189C2 (sv) | 1994-06-28 | 1994-06-28 | Anordning för att skydda en abonnentlinjekrets från överspänningar |
SE9402277-9 | 1994-06-28 | ||
PCT/SE1995/000800 WO1996001015A1 (en) | 1994-06-28 | 1995-06-28 | An apparatus for protecting a subscriber line interface circuit against overvoltages |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH09502600A true JPH09502600A (ja) | 1997-03-11 |
JP3439218B2 JP3439218B2 (ja) | 2003-08-25 |
Family
ID=20394549
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50307396A Expired - Lifetime JP3439218B2 (ja) | 1994-06-28 | 1995-06-28 | 加入者線インタフェース回路の過電圧保護装置 |
Country Status (10)
Country | Link |
---|---|
US (1) | US5668866A (ja) |
EP (1) | EP0715791B1 (ja) |
JP (1) | JP3439218B2 (ja) |
KR (1) | KR960704422A (ja) |
CN (1) | CN1130007A (ja) |
AT (1) | ATE248480T1 (ja) |
CA (1) | CA2169640A1 (ja) |
DE (1) | DE69531592T2 (ja) |
SE (1) | SE519189C2 (ja) |
WO (1) | WO1996001015A1 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5809109A (en) * | 1995-06-01 | 1998-09-15 | Advanced Micro Devices, Inc. | Integrated ring sensor with fault detection |
US6160887A (en) * | 1997-05-02 | 2000-12-12 | Goodrich; Patrick | Telephone loop-current regulator |
SE514936C2 (sv) * | 1999-09-03 | 2001-05-21 | Ericsson Telefon Ab L M | Förfarande och anordning för att förkorta en linjedrivares återhämtningstid |
US7080328B1 (en) * | 2001-03-28 | 2006-07-18 | Ebay, Inc. | Graphical user interface for filtering a population of items |
DE10241354A1 (de) * | 2002-09-06 | 2004-03-18 | Xignal Technologies Ag | Integrierte Schaltung mit Überspannungsschutz |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7614118A (nl) * | 1976-12-20 | 1978-06-22 | Philips Nv | Schakeling voor het beschermen van telefoon- lijnen. |
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 |
US4661979A (en) * | 1985-09-24 | 1987-04-28 | Northern Telecom Limited | Fault protection for integrated subscriber line interface circuits |
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 |
SE459138B (sv) * | 1987-10-08 | 1989-06-05 | Ericsson Telefon Ab L M | Anordning i ett telekommunikationssystem vid inkoppling och urkoppling av en ringsignal |
-
1994
- 1994-06-28 SE SE9402277A patent/SE519189C2/sv not_active IP Right Cessation
-
1995
- 1995-06-28 EP EP95924566A patent/EP0715791B1/en not_active Expired - Lifetime
- 1995-06-28 US US08/602,838 patent/US5668866A/en not_active Expired - Lifetime
- 1995-06-28 CN CN95190574A patent/CN1130007A/zh active Pending
- 1995-06-28 AT AT95924566T patent/ATE248480T1/de not_active IP Right Cessation
- 1995-06-28 KR KR1019960700876A patent/KR960704422A/ko not_active Application Discontinuation
- 1995-06-28 CA CA002169640A patent/CA2169640A1/en not_active Abandoned
- 1995-06-28 DE DE69531592T patent/DE69531592T2/de not_active Expired - Lifetime
- 1995-06-28 WO PCT/SE1995/000800 patent/WO1996001015A1/en active IP Right Grant
- 1995-06-28 JP JP50307396A patent/JP3439218B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0715791B1 (en) | 2003-08-27 |
CN1130007A (zh) | 1996-08-28 |
WO1996001015A1 (en) | 1996-01-11 |
DE69531592T2 (de) | 2004-06-17 |
SE9402277L (sv) | 1995-12-29 |
CA2169640A1 (en) | 1996-01-11 |
JP3439218B2 (ja) | 2003-08-25 |
KR960704422A (ko) | 1996-08-31 |
US5668866A (en) | 1997-09-16 |
SE519189C2 (sv) | 2003-01-28 |
ATE248480T1 (de) | 2003-09-15 |
SE9402277D0 (sv) | 1994-06-28 |
EP0715791A1 (en) | 1996-06-12 |
DE69531592D1 (de) | 2003-10-02 |
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