FI844416L - KOPPLINGSANORDNING FOER URLADDNING AV OEVERSPAENNINGAR. - Google Patents

KOPPLINGSANORDNING FOER URLADDNING AV OEVERSPAENNINGAR.

Info

Publication number
FI844416L
FI844416L FI844416A FI844416A FI844416L FI 844416 L FI844416 L FI 844416L FI 844416 A FI844416 A FI 844416A FI 844416 A FI844416 A FI 844416A FI 844416 L FI844416 L FI 844416L
Authority
FI
Finland
Prior art keywords
urladdning
oeverspaenningar
electronic
power mosfets
series
Prior art date
Application number
FI844416A
Other languages
Finnish (fi)
Other versions
FI81469B (en
FI844416A0 (en
FI81469C (en
Inventor
Karl-Heinz Walter
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of FI844416A0 publication Critical patent/FI844416A0/en
Publication of FI844416L publication Critical patent/FI844416L/en
Publication of FI81469B publication Critical patent/FI81469B/en
Application granted granted Critical
Publication of FI81469C publication Critical patent/FI81469C/en

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
    • H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
    • H02H9/025—Current limitation using field effect transistors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Signal Processing (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Structure Of Telephone Exchanges (AREA)

Abstract

1. Circuit arrangement for the drainage of over-voltages in switching systems comprising a main distributor (HV) and a subscriber module (TB) with electronic SLIC, in which a two-pole electronic current limiter (S1, S2) is in each case arranged in the series arms of the a/b wires in front of the electronic SLIC, characterized in that two in series and oppositely connected power MOSFETs (T1, T1') each are arranged as current limiters and that optoelectronic couplers (01, 01') are used for generating a positive bias voltage at the gate of the power MOSFETs (T1, T1').
FI844416A 1983-11-11 1984-11-09 KOPPLINGSANORDNING FOER URLADDNING AV OEVERSPAENNINGAR. FI81469C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833340927 DE3340927A1 (en) 1983-11-11 1983-11-11 CIRCUIT ARRANGEMENT FOR DERIVATING OVERVOLTAGE
DE3340927 1983-11-11

Publications (4)

Publication Number Publication Date
FI844416A0 FI844416A0 (en) 1984-11-09
FI844416L true FI844416L (en) 1985-05-12
FI81469B FI81469B (en) 1990-06-29
FI81469C FI81469C (en) 1990-10-10

Family

ID=6214136

Family Applications (1)

Application Number Title Priority Date Filing Date
FI844416A FI81469C (en) 1983-11-11 1984-11-09 KOPPLINGSANORDNING FOER URLADDNING AV OEVERSPAENNINGAR.

Country Status (8)

Country Link
EP (1) EP0142128B1 (en)
JP (1) JPS60118024A (en)
AT (1) ATE40773T1 (en)
BR (1) BR8405721A (en)
CA (1) CA1260535A (en)
DE (2) DE3340927A1 (en)
FI (1) FI81469C (en)
ZA (1) ZA848759B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3712572C1 (en) * 1987-04-14 1988-08-04 Telefonbau & Normalzeit Gmbh Circuit arrangement for overvoltage protection and call current feed on a connection line for telecommunications, in particular telephone switching systems
CA1260171A (en) * 1987-05-15 1989-09-26 Reinhard W. Rosch Protection arrangement for a telephone subscriber line interface circuit
DE3814661A1 (en) * 1988-04-29 1989-11-09 Nixdorf Computer Ag DEVICE FOR SWITCHING THE CALL AC VOLTAGE ON SUBSCRIBER CONNECTION LINES
US5146384A (en) * 1989-04-28 1992-09-08 Northern Telecom Limited Automatically resetting protection arrangement for a telephone subscriber line interface circuit
DE69211790T2 (en) * 1991-08-27 1996-11-07 At & T Corp Common mode surge protection circuit
GB9223773D0 (en) * 1992-11-12 1992-12-23 Raychem Ltd Switching arrangement
EP0684677B1 (en) * 1993-02-10 2003-12-17 Line Electronics Corporation Overcurrent protective circuit and semiconductor device
DE4326596C2 (en) * 1993-08-07 1997-07-17 Sel Alcatel Ag Protective circuit arrangement for electronic subscriber circuits
EP0717886B1 (en) * 1993-09-08 1997-05-07 Siemens Aktiengesellschaft Current limiting device
US6049447A (en) * 1993-09-08 2000-04-11 Siemens Ag Current limiting device
DE4402461A1 (en) * 1994-01-28 1995-08-03 Sel Alcatel Ag Protection circuit for a subscriber line circuit and subscriber line circuit with it
US6266223B1 (en) * 1999-06-30 2001-07-24 Tyco Electronics Corporation Line protector for a communications circuit
DE102007036330A1 (en) 2006-09-12 2008-04-03 Tremco Illbruck Productie B.V. Bonding method, useful e.g. in building applications, involves applying polyurethane foam of specific setting time to substrate and pressing on component to be bonded

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3631264A (en) * 1970-02-11 1971-12-28 Sybron Corp Intrinsically safe electrical barrier system and improvements therein
DE2435606C3 (en) * 1974-07-24 1979-03-01 Siemens Ag, 1000 Berlin Und 8000 Muenchen Series connection of field effect transistors for the realization of a high-ohmic linear resistance
US4170740A (en) * 1978-02-24 1979-10-09 International Telephone And Telegraph Corporation High voltage switch and capacitive drive
US4200898A (en) * 1978-06-19 1980-04-29 The United States Of America As Represented By The Secretary Of The Navy Current limiter
DE2834894A1 (en) * 1978-08-09 1980-02-21 Siemens Ag Two terminal electronic overvoltage protector for telephone line - has diodes blocking currents of one polarity and electronic circuit blocking overcurrent of opposite polarity
JPS5638931A (en) * 1979-09-06 1981-04-14 Sony Corp Overcurrent detector circuit
DE3215551A1 (en) * 1982-04-26 1983-10-27 Siemens AG, 1000 Berlin und 8000 München CIRCUIT ARRANGEMENT FOR OVERVOLTAGE PROTECTION OF INTERFACE CIRCUITS

Also Published As

Publication number Publication date
DE3476727D1 (en) 1989-03-16
ZA848759B (en) 1985-07-31
ATE40773T1 (en) 1989-02-15
JPH0586129B2 (en) 1993-12-10
FI81469B (en) 1990-06-29
DE3340927A1 (en) 1985-05-23
BR8405721A (en) 1985-09-10
FI844416A0 (en) 1984-11-09
CA1260535A (en) 1989-09-26
EP0142128A1 (en) 1985-05-22
JPS60118024A (en) 1985-06-25
EP0142128B1 (en) 1989-02-08
FI81469C (en) 1990-10-10

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Legal Events

Date Code Title Description
MM Patent lapsed
MM Patent lapsed

Owner name: SIEMENS AKTIENGESELLSCHAFT