FI110979B - Fjärrstyrd brytare och skyddskrets - Google Patents

Fjärrstyrd brytare och skyddskrets Download PDF

Info

Publication number
FI110979B
FI110979B FI946188A FI946188A FI110979B FI 110979 B FI110979 B FI 110979B FI 946188 A FI946188 A FI 946188A FI 946188 A FI946188 A FI 946188A FI 110979 B FI110979 B FI 110979B
Authority
FI
Finland
Prior art keywords
voltage
circuit
switching
lines
arrangement according
Prior art date
Application number
FI946188A
Other languages
English (en)
Finnish (fi)
Other versions
FI946188A0 (sv
FI946188A (sv
Inventor
Dennis Malcolm Pryor
Michael Challis
Original Assignee
Raychem Ltd
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
Priority claimed from GB929213980A external-priority patent/GB9213980D0/en
Priority claimed from GB929221348A external-priority patent/GB9221348D0/en
Application filed by Raychem Ltd filed Critical Raychem Ltd
Publication of FI946188A0 publication Critical patent/FI946188A0/sv
Publication of FI946188A publication Critical patent/FI946188A/sv
Application granted granted Critical
Publication of FI110979B publication Critical patent/FI110979B/sv

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
    • H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
    • H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop
    • H04M3/301—Circuit arrangements at the subscriber's side of the line
    • 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
    • H02H3/10—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 additionally responsive to some other abnormal electrical conditions
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transceivers (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Selective Calling Equipment (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Measurement Of Current Or Voltage (AREA)

Claims (15)

1. Koppiingsarrangemang, vilket har kopplats tili en kom-munikationskanal som omfattar ett par linjer mellan termi -naluppsättningar, vilket koppiingsarrangemang omfattar: 20 (i) en reglerkrets (13), vilken har kopplats mellan linjerna och reagerar pä spänningen mellan linjerna, och (ii) ätminstone en kopplingskrets (2, 2', 4), vilken har kopplats tili eller mellan linjerna och reagerar pä ' reglerkretsen, kännetecknat av att 25 a) reglerkretsen är en DC-spänningsfönsterdetektor- krets (3), vilken aktiverar kopplingskretsen (2, 2’, 4) endast i det fall att spänningen mellan linjerna befinner sig inom ett förutbestämt band, varvid bandets undre gräns är större än den maximala signalspänningen, och 30 b) ett lägpassfilter (C3, R5, Cl, C8, R14, R15, R16) har förenats tili kopplingskretsen, vilket filter uppvi-sar en gränsfrekvens som är tillräckligt lag för att förhindra kopplingskretsen frän att aktiveras av en ring-signal i kanalen. 35 24 110979
2. Arrangemang enligt patentkrav 1, kännetecknat av att den övre gränsen för det förutbestämda spänningsbandet ligger under toppvärdet för ringspänningen.
3. Arrangemang enligt patentkravet 1 eller 2, känneteck nat av att fönsterdetektorkretsen omfattar en Zener-diod (24) som definierar spänningsbandets nedre gräns, inom vilken strömmen gär.
4. Arrangemang enligt nägot av patentkraven 1-3, känne tecknat av att det omfattar en seriekopplingskrets (2, 2'), vilken har kopplats tili varje linje.
5. Arrangemang enligt patentkrav 4, kännetecknat av att 15 seriekopplingselementen (2, 2') öppnas da dessa utsetts för en överström i linjerna.
6. Arrangemang enligt patentkrav 5, kännetecknat av att seriekopplingskretsen (2, 2') i varje linje omfattar en 20 kopplingstransistor (Tl, T2, T3), vars bas- eller gitter- spänning styrs med ett överströmsstyrelement (T4), vilket överströmsstyrelement kopplas pä da kopplingskretsen utsättes för överström, varvid kopplingstransistorn kopplas bort.
7. Arrangemang enligt patentkrav 6, kännetecknat av att varje seriekopplingskrets omfattar ett teststyrelement (T5) , vilket även styr kopplingselementets bas- eller gitterspänning, vilken teststyrtransistor kopplas pä dä !, 30 Ström gar i fönsterkretsen (3) och därigenom kopplar bort kopplingstransistorn (Tl, T2, T3).
8. Arrangemang enligt nägon av patentkraven 5-7, kännetecknat av att varje seriekopplingskrets (2, 2') är kapa- 35 bel att förbli i öppet tillständ en viss tid efter att den aktiverande DC-signalen har upphört. 110979 25
9. Arrangemang enligt patentkrav 8, kännetecknat av att varje seriekopplingskrets omfattar en kondensator (C2) , vilken har kopplats till en ingängsterminal vid teststyr-transistorn, vilken kondensator laddas under aktiveringen 5 av kopplingskretsarna med DC-signalen och kopplingskret- sen hälles öppen en viss tid efter att den aktiverande DC-signalen upphört.
10. Arrangemang enligt nägot av patentkraven 1-9, kanne- 10 tecknat av att det omf attar en shuntkopplingskrets (4) , vilken har kopplats mellan linjerna eller mellan varje linje och jorden.
11. Arrangemang enligt patentkrav 10, kännetecknat av att 15 shuntkopplingskretsen (4) slutes da den utsättes för en överspänning.
12. Arrangemang enligt patentkrav 10 eller 11, kännetecknat av att varje shuntkopplingskrets omfattar en triak 'UI'. 20
13. Arrangemang enligt patentkrav 12, kännetecknat av att triaken (Ui) uppvisar ett gitter som har kopplats tili fönsterdetektorkretsen pä sä sätt att en Ström som gär i fönsterdetektorkretsen utlöser triaken. 25
14. Arrangemang enligt nägon av patentkraven 1-13, kännetecknat av att fönsterdetektorkretsen har kopplats tili kopplingskretsen via en optoelektronisk brytare (OPTO 1, 2, 3) .
FI946188A 1992-07-01 1994-12-30 Fjärrstyrd brytare och skyddskrets FI110979B (sv)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
GB929213980A GB9213980D0 (en) 1992-07-01 1992-07-01 Switching arragement for a communications channel
GB9213980 1992-07-01
GB929221348A GB9221348D0 (en) 1992-10-12 1992-10-12 Switching arrangement for a communications channel
GB9221348 1992-10-12
PCT/GB1993/001376 WO1994001961A1 (en) 1992-07-01 1993-06-30 Switching arrangement for a communications channel
GB9301376 1993-06-30

Publications (3)

Publication Number Publication Date
FI946188A0 FI946188A0 (sv) 1994-12-30
FI946188A FI946188A (sv) 1994-12-30
FI110979B true FI110979B (sv) 2003-04-30

Family

ID=26301164

Family Applications (1)

Application Number Title Priority Date Filing Date
FI946188A FI110979B (sv) 1992-07-01 1994-12-30 Fjärrstyrd brytare och skyddskrets

Country Status (21)

Country Link
US (1) US5652575A (sv)
EP (1) EP0649585B1 (sv)
JP (1) JPH07508376A (sv)
KR (1) KR950702368A (sv)
CN (1) CN1082283C (sv)
AT (1) ATE170687T1 (sv)
AU (1) AU678765B2 (sv)
BG (1) BG99316A (sv)
BR (1) BR9306660A (sv)
CA (1) CA2139436A1 (sv)
CZ (1) CZ334994A3 (sv)
DE (1) DE69320819T2 (sv)
ES (1) ES2120508T3 (sv)
FI (1) FI110979B (sv)
HU (1) HUT73112A (sv)
IL (1) IL106193A (sv)
NO (1) NO945099D0 (sv)
NZ (1) NZ253749A (sv)
SK (1) SK160694A3 (sv)
TW (1) TW264598B (sv)
WO (1) WO1994001961A1 (sv)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9223770D0 (en) * 1992-11-12 1992-12-23 Raychem Ltd Communication channel testing arrangement
GB9403646D0 (en) * 1994-02-25 1994-04-13 Raychem Ltd Switching device for telecommunications channel
WO1995031865A1 (en) * 1994-05-17 1995-11-23 British Telecommunications Public Limited Company Customer line tester
FR2754662B1 (fr) * 1996-10-14 1998-12-04 Henri Depaepe Sa Terminal de telecommunications d'essais
JP3580678B2 (ja) * 1996-10-16 2004-10-27 沖電気工業株式会社 オフフック信号およびダイヤルパルス発生回路、および該回路の駆動方法
WO1999053627A1 (en) 1998-04-10 1999-10-21 Chrimar Systems, Inc. Doing Business As Cms Technologies System for communicating with electronic equipment on a network
US6068508A (en) * 1998-04-23 2000-05-30 Lucent Technologies, Inc. Connector assembly test block
US6614881B1 (en) 2000-10-17 2003-09-02 Tyco Electronics Corporation Remotely operable telecommunications conductor test circuit and method for using the same
US7036144B2 (en) * 2000-12-21 2006-04-25 Jon Ryan Welcher Selective prevention of undesired communications within a computer network
US20030112572A1 (en) * 2001-12-19 2003-06-19 Knigge Vincent L. Frequency selective transient voltage protector
US6983038B2 (en) * 2002-10-29 2006-01-03 Bellsouth Intellectual Property Corporation Maintenance termination unit
US7200206B1 (en) * 2003-03-27 2007-04-03 At&T Corp. Method and apparatus for testing a subscriber loop-based service
US6862162B2 (en) * 2003-04-23 2005-03-01 Teccor Electronics, Lp Thyristor circuit providing overcurrent protection to a low impedance load
DE102004047871A1 (de) * 2004-10-01 2006-04-06 Deutsche Thomson-Brandt Gmbh Signal-Eingangsschaltung
US8340252B2 (en) * 2008-06-27 2012-12-25 Early Rescue Solutions, LLC Surveillance device detection with countermeasures
JP5281556B2 (ja) * 2009-12-07 2013-09-04 セイコーインスツル株式会社 物理量センサ
US11121547B2 (en) 2019-04-02 2021-09-14 Analog Devices International Unlimited Company Device and method for overvoltage protection

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US3725613A (en) * 1971-02-25 1973-04-03 Rochester Tel Corp Apparatus for protecting and testing telephone network
US4143250A (en) * 1976-12-13 1979-03-06 Tii Corporation Telephone isolation system
US4169220A (en) * 1978-10-02 1979-09-25 Fields Gary C Telephone instrument connection block with remotely actuated line test
US4489221A (en) * 1982-08-23 1984-12-18 Micro Computer Systems, Inc. Telephone line/subscriber equipment disconnect apparatus
GB2149274A (en) * 1983-10-31 1985-06-05 Teradyne Inc Testing subscriber lines
US4529847A (en) * 1983-12-12 1985-07-16 At&T Bell Laboratories Maintenance termination unit
US4582960A (en) * 1984-05-17 1986-04-15 Porta Systems Corp. Subscriber network interface device
US4653084A (en) * 1984-07-20 1987-03-24 Om Ahuja Remote actuated switch
US4669111A (en) * 1984-07-20 1987-05-26 Om Ahuja Polarity ring director
DE3513598A1 (de) * 1985-04-16 1986-10-16 Neumann Elektronik GmbH, 4330 Mülheim Einrichtung zur pruefung einer fernmeldeleitung zwischen einer vermittlungsstelle und einem teilnehmeranschluss von der vermittlungsstelle aus
US4626632A (en) * 1985-07-25 1986-12-02 Porta Systems Corp. Maintenance termination unit
GB2181625A (en) * 1985-10-15 1987-04-23 Teradyne Inc Apparatus for connecting and disconnecting telephone equipment
US4807277A (en) * 1987-05-15 1989-02-21 Keptel, Inc. Remotely activated switching apparatus
CA1260171A (en) * 1987-05-15 1989-09-26 Reinhard W. Rosch Protection arrangement for a telephone subscriber line interface circuit
US4875040A (en) * 1988-05-06 1989-10-17 Dzjuban Vitaly S Device for remote control of electrical apparatus
GB9027111D0 (en) * 1990-12-13 1991-02-06 Raychem Ltd Circuit protection device
AU663473B2 (en) * 1990-10-12 1995-10-12 Raychem Limited Circuit protection arrangement
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US5357556A (en) * 1992-08-10 1994-10-18 Pacific Bell System and method for telephone network testing

Also Published As

Publication number Publication date
DE69320819T2 (de) 1999-06-10
NO945099L (no) 1994-12-30
CN1082283C (zh) 2002-04-03
KR950702368A (ko) 1995-06-19
HUT73112A (en) 1996-06-28
HU9403807D0 (en) 1995-02-28
CA2139436A1 (en) 1994-01-20
FI946188A0 (sv) 1994-12-30
DE69320819D1 (de) 1998-10-08
IL106193A0 (en) 1993-10-20
IL106193A (en) 1996-09-12
AU4507593A (en) 1994-01-31
TW264598B (sv) 1995-12-01
CZ334994A3 (en) 1995-08-16
BG99316A (en) 1995-10-31
FI946188A (sv) 1994-12-30
NO945099D0 (no) 1994-12-30
BR9306660A (pt) 1998-12-08
NZ253749A (en) 1996-03-26
US5652575A (en) 1997-07-29
ATE170687T1 (de) 1998-09-15
ES2120508T3 (es) 1998-11-01
SK160694A3 (en) 1995-09-13
JPH07508376A (ja) 1995-09-14
AU678765B2 (en) 1997-06-12
EP0649585B1 (en) 1998-09-02
CN1085364A (zh) 1994-04-13
WO1994001961A1 (en) 1994-01-20
EP0649585A1 (en) 1995-04-26

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