FI864318A0 - Kopplingsanordning foer ett oeverspaenningskydd i elektroniska telefonstationer. - Google Patents

Kopplingsanordning foer ett oeverspaenningskydd i elektroniska telefonstationer.

Info

Publication number
FI864318A0
FI864318A0 FI864318A FI864318A FI864318A0 FI 864318 A0 FI864318 A0 FI 864318A0 FI 864318 A FI864318 A FI 864318A FI 864318 A FI864318 A FI 864318A FI 864318 A0 FI864318 A0 FI 864318A0
Authority
FI
Finland
Prior art keywords
telefonstationer
oeverspaenningskydd
elektroniska
foer ett
kopplingsanordning foer
Prior art date
Application number
FI864318A
Other languages
English (en)
Other versions
FI86354C (fi
FI86354B (fi
FI864318A (fi
Inventor
Alfred Brandstetter
Juergen Riesmeyer
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 FI864318A0 publication Critical patent/FI864318A0/fi
Publication of FI864318A publication Critical patent/FI864318A/fi
Application granted granted Critical
Publication of FI86354B publication Critical patent/FI86354B/fi
Publication of FI86354C publication Critical patent/FI86354C/fi

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
    • H04M1/312—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses pulses produced by electronic circuits
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Devices For Supply Of Signal Current (AREA)
FI864318A 1985-10-25 1986-10-24 Kopplingsarrangemang foer skydd mot oeverspaenning i elektroniska telefonstationer. FI86354C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3538088A DE3538088C2 (de) 1985-10-25 1985-10-25 Schaltungsanordnung für einen Überspannungsschutz in elektronischen Fernsprechstationen
DE3538088 1985-10-25

Publications (4)

Publication Number Publication Date
FI864318A0 true FI864318A0 (fi) 1986-10-24
FI864318A FI864318A (fi) 1987-04-26
FI86354B FI86354B (fi) 1992-04-30
FI86354C FI86354C (fi) 1992-08-10

Family

ID=6284499

Family Applications (1)

Application Number Title Priority Date Filing Date
FI864318A FI86354C (fi) 1985-10-25 1986-10-24 Kopplingsarrangemang foer skydd mot oeverspaenning i elektroniska telefonstationer.

Country Status (4)

Country Link
US (1) US4727571A (fi)
AU (1) AU581156B2 (fi)
DE (1) DE3538088C2 (fi)
FI (1) FI86354C (fi)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3943717C2 (de) * 1989-08-30 1994-04-14 Siemens Ag Schaltungsanordnung für elektronische Fernsprechstationen
ES2046072B1 (es) * 1991-06-21 1996-06-01 Telefonica Nacional Espana Co Punto de conexion de red con modulo de telemedida.
ES2038899B1 (es) * 1991-07-18 1996-06-01 Telefonica Nacional Espana Co Punto de terminacion de red.
IT1254796B (it) * 1992-02-17 1995-10-11 St Microelectronics Srl Dispositivo di limitazione della tensione operativa per interruttori meccanici in telefonia.
NZ260129A (en) * 1993-04-08 1996-08-27 Alcatel Australia Controlling power dissipation in telephone semiconductor line switch
DE4326596C2 (de) * 1993-08-07 1997-07-17 Sel Alcatel Ag Schutzschaltungsanordnung für elektronische Teilnehmerschaltungen
CA2146596C (en) * 1994-04-29 1999-09-21 Harry W. Moore, Iii Loop current detector
DE4427207C1 (de) * 1994-08-01 1995-08-31 Siemens Ag Fehlerstromschutzeinrichtung für ein Beistellgerät in digitalen Telefonanlagen
US6160887A (en) * 1997-05-02 2000-12-12 Goodrich; Patrick Telephone loop-current regulator
DE69836263T2 (de) * 1998-06-26 2007-05-31 Alcatel Filteranordnung anwendbar auf ADSL-teiler
CN100373727C (zh) * 2004-08-20 2008-03-05 四川康姆逊电磁防护有限责任公司 一种过热过电压保护器

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2115670C2 (de) * 1971-03-31 1981-06-04 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung für Fernsprechstationen mit überspannungsgeschützten und polungsunabhängigen Mikrofonverstärkern in integrierter monolithischer Technik
DE2541942C3 (de) * 1975-09-19 1978-08-24 Siemens Ag, 1000 Berlin Und 8000 Muenchen Schaltungsanordnung zum Schutz von Teilnehmerstationen mit Wähleinrichtungen in Fernmelde-, insbesondere Fernsprechanlagen gegen Überspannungen
NL7614000A (nl) * 1976-12-17 1978-06-20 Philips Nv Signaleringssysteem voor overspanningsbescher- mers.
US4132870A (en) * 1977-11-03 1979-01-02 Bell Telephone Laboratories, Incorporated Key telephone system optically coupled protective coupler
US4198547A (en) * 1978-09-26 1980-04-15 Tele/Resources Pulse circuit for two wire electronic PABX stations
IT1202931B (it) * 1979-06-05 1989-02-15 Sits Soc It Telecom Siemens Circuito di interfaccia per tastiera elettronica con ripetizione della selezione
NL8001136A (nl) * 1980-02-26 1981-09-16 Philips Nv Schakeling voor toepassing in een telefoontoestel.
US4309574A (en) * 1980-04-15 1982-01-05 Gte Automatic Electric Labs Inc. Electronic tone ringer
US4313037A (en) * 1980-06-02 1982-01-26 Rolm Corporation Telephone station set with improved flash signalling
US4306119A (en) * 1980-07-03 1981-12-15 Bell Telephone Laboratories, Incorporated Telephone outpulsing circuit
CA1136783A (en) * 1980-09-23 1982-11-30 Guy J. Chaput Telephone circuit
DE3334952A1 (de) * 1983-09-27 1985-04-18 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung zum schutz einer an die vierdrahtseite einer uebertragergabel angeschlossenen elektronikschaltung
US4555597A (en) * 1983-12-05 1985-11-26 Gte Business Communication Systems Inc. Transient resistant key operated pulse generating calling device circuit
DE3407202A1 (de) * 1984-02-28 1985-08-29 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung fuer eine elektronische drossel in lautfernsprechstationen
DE3407226A1 (de) * 1984-02-28 1985-08-29 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung fuer eine elektronische drossel in lautfernsprechstationen
US4636588A (en) * 1984-02-29 1987-01-13 Kabushiki Kaisha Toshiba Electric source circuit for telephone sets

Also Published As

Publication number Publication date
AU581156B2 (en) 1989-02-09
FI86354C (fi) 1992-08-10
DE3538088C2 (de) 1993-11-11
FI86354B (fi) 1992-04-30
FI864318A (fi) 1987-04-26
US4727571A (en) 1988-02-23
AU6436486A (en) 1987-04-30
DE3538088A1 (de) 1987-04-30

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Legal Events

Date Code Title Description
MM Patent lapsed
MM Patent lapsed

Owner name: SIEMENS AKTIENGESELLSCHAFT