NL7903665A - Aansluitschakeling voor een telefoonlijn. - Google Patents

Aansluitschakeling voor een telefoonlijn. Download PDF

Info

Publication number
NL7903665A
NL7903665A NL7903665A NL7903665A NL7903665A NL 7903665 A NL7903665 A NL 7903665A NL 7903665 A NL7903665 A NL 7903665A NL 7903665 A NL7903665 A NL 7903665A NL 7903665 A NL7903665 A NL 7903665A
Authority
NL
Netherlands
Prior art keywords
current
telephone line
output
connection circuit
amplifier
Prior art date
Application number
NL7903665A
Other languages
English (en)
Dutch (nl)
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Priority to NL7903665A priority Critical patent/NL7903665A/nl
Priority to US06/142,306 priority patent/US4313034A/en
Priority to CA000351110A priority patent/CA1143493A/en
Priority to GB8014755A priority patent/GB2050114B/en
Priority to AU58120/80A priority patent/AU532852B2/en
Priority to SE8003400D priority patent/SE8003400L/xx
Priority to IT21869/80A priority patent/IT1131454B/it
Priority to SE8003400A priority patent/SE446579B/sv
Priority to DE3017646A priority patent/DE3017646C2/de
Priority to JP6005780A priority patent/JPS55150660A/ja
Priority to BE0/200537A priority patent/BE883196A/fr
Priority to FR8010455A priority patent/FR2456432B1/fr
Publication of NL7903665A publication Critical patent/NL7903665A/nl

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/001—Current supply source at the exchanger providing current to substations
    • H04M19/005—Feeding arrangements without the use of line transformers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/005—Interface circuits for subscriber lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)
NL7903665A 1979-05-10 1979-05-10 Aansluitschakeling voor een telefoonlijn. NL7903665A (nl)

Priority Applications (12)

Application Number Priority Date Filing Date Title
NL7903665A NL7903665A (nl) 1979-05-10 1979-05-10 Aansluitschakeling voor een telefoonlijn.
US06/142,306 US4313034A (en) 1979-05-10 1980-04-21 Connecting circuit for a telephone line
CA000351110A CA1143493A (en) 1979-05-10 1980-05-01 Connecting circuit for a telephone line
GB8014755A GB2050114B (en) 1979-05-10 1980-05-02 Line circuit for a telephone line
AU58120/80A AU532852B2 (en) 1979-05-10 1980-05-06 Telephone line connecting circuit
SE8003400D SE8003400L (sv) 1979-05-10 1980-05-07 Kopplingskrets for en telefonledning
IT21869/80A IT1131454B (it) 1979-05-10 1980-05-07 Circuito di collegamento per una linea telefonica
SE8003400A SE446579B (sv) 1979-05-10 1980-05-07 Kopplingskrets for en telefonledning
DE3017646A DE3017646C2 (de) 1979-05-10 1980-05-08 Teilnehmeranschlußschaltung für eine Fernsprechleitung
JP6005780A JPS55150660A (en) 1979-05-10 1980-05-08 Connecting circuit for telephone line
BE0/200537A BE883196A (fr) 1979-05-10 1980-05-08 Circuit de raccordement pour une ligne telephonique
FR8010455A FR2456432B1 (fr) 1979-05-10 1980-05-09 Circuit de raccordement pour une ligne telephonique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL7903665 1979-05-10
NL7903665A NL7903665A (nl) 1979-05-10 1979-05-10 Aansluitschakeling voor een telefoonlijn.

Publications (1)

Publication Number Publication Date
NL7903665A true NL7903665A (nl) 1980-11-12

Family

ID=19833140

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7903665A NL7903665A (nl) 1979-05-10 1979-05-10 Aansluitschakeling voor een telefoonlijn.

Country Status (11)

Country Link
US (1) US4313034A (ja)
JP (1) JPS55150660A (ja)
AU (1) AU532852B2 (ja)
BE (1) BE883196A (ja)
CA (1) CA1143493A (ja)
DE (1) DE3017646C2 (ja)
FR (1) FR2456432B1 (ja)
GB (1) GB2050114B (ja)
IT (1) IT1131454B (ja)
NL (1) NL7903665A (ja)
SE (2) SE8003400L (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE452385B (sv) * 1981-02-17 1987-11-23 Western Electric Co Batterimatningskrets
FR2527404B1 (fr) * 1982-05-19 1987-10-23 Cit Alcatel Joncteur d'abonne electronique
US4524246A (en) * 1982-07-07 1985-06-18 Harris Corporation SLIC II--common-mode current rejection
SE433285B (sv) * 1982-09-22 1984-05-14 Ericsson Telefon Ab L M Anordning for strommatning av en abonnentapparat
IT1215254B (it) * 1985-03-20 1990-01-31 Ates Componenti Elettron Circuito, integrabile monoliticamente, per la misura di correnti longitudinali e trasversali in una linea ditrasmissione bifilare.
IT1252125B (it) * 1991-10-23 1995-06-05 Sgs Thomson Microelectronics Metodo e dispositivo circuitale per misurare in condizioni di esercizio parametri operativi di un circuito di interfaccia e di una linea telefonica d'utente ad esse collegata
SE501975C2 (sv) * 1993-11-09 1995-07-03 Ericsson Telefon Ab L M Gränssnittskrets mellan fyrtrådsledning och tvåtrådsledning

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4004109A (en) * 1975-05-09 1977-01-18 Boxall Frank S Hybrid circuit
FR2366756A1 (fr) * 1976-09-30 1978-04-28 Labo Cent Telecommunicat Circuit electronique d'injection de sonnerie
NL7700719A (nl) * 1977-01-25 1978-07-27 Philips Nv Storingsongevoelig lijnsupervisiecircuit.
US4087646A (en) * 1977-01-28 1978-05-02 Bell Telephone Laboratories, Incorporated Dual mode telephone subscriber loop current detector
US4099032A (en) * 1977-03-25 1978-07-04 Wescom, Inc. Loop current detector
US4203012A (en) * 1977-07-14 1980-05-13 Boxall Frank S Hybrid circuit using current mirror circuits
US4203009A (en) * 1977-08-17 1980-05-13 The Post Office Unbalanced/balanced converter circuits
US4192974A (en) * 1978-03-20 1980-03-11 Lorain Products Corporation Multi-section apparatus for improving signal transmission through telephone transmission lines

Also Published As

Publication number Publication date
SE8003400L (sv) 1980-11-11
JPH0232829B2 (ja) 1990-07-24
GB2050114A (en) 1980-12-31
US4313034A (en) 1982-01-26
DE3017646A1 (de) 1980-11-13
AU5812080A (en) 1980-11-13
BE883196A (fr) 1980-11-10
SE446579B (sv) 1986-09-22
DE3017646C2 (de) 1984-04-26
AU532852B2 (en) 1983-10-13
FR2456432B1 (fr) 1986-05-09
GB2050114B (en) 1983-03-16
IT1131454B (it) 1986-06-25
CA1143493A (en) 1983-03-22
IT8021869A0 (it) 1980-05-07
FR2456432A1 (fr) 1980-12-05
JPS55150660A (en) 1980-11-22

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Legal Events

Date Code Title Description
A1B A search report has been drawn up
BC A request for examination has been filed
A85 Still pending on 85-01-01
BV The patent application has lapsed