FR2456439B1 - Circuit pour ligne d'abonne - Google Patents

Circuit pour ligne d'abonne

Info

Publication number
FR2456439B1
FR2456439B1 FR8010454A FR8010454A FR2456439B1 FR 2456439 B1 FR2456439 B1 FR 2456439B1 FR 8010454 A FR8010454 A FR 8010454A FR 8010454 A FR8010454 A FR 8010454A FR 2456439 B1 FR2456439 B1 FR 2456439B1
Authority
FR
France
Prior art keywords
circuit
subscriber line
subscriber
line
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.)
Expired
Application number
FR8010454A
Other languages
English (en)
Other versions
FR2456439A1 (fr
Inventor
Pieter Bakker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken 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 Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of FR2456439A1 publication Critical patent/FR2456439A1/fr
Application granted granted Critical
Publication of FR2456439B1 publication Critical patent/FR2456439B1/fr
Expired legal-status Critical Current

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
    • H04M19/008—Using DC/DC converters

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Amplifiers (AREA)
FR8010454A 1979-05-10 1980-05-09 Circuit pour ligne d'abonne Expired FR2456439B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7903664A NL7903664A (nl) 1979-05-10 1979-05-10 Lijncircuit.

Publications (2)

Publication Number Publication Date
FR2456439A1 FR2456439A1 (fr) 1980-12-05
FR2456439B1 true FR2456439B1 (fr) 1987-07-31

Family

ID=19833139

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8010454A Expired FR2456439B1 (fr) 1979-05-10 1980-05-09 Circuit pour ligne d'abonne

Country Status (12)

Country Link
US (1) US4314106A (fr)
JP (1) JPS55150659A (fr)
AU (1) AU533095B2 (fr)
BE (1) BE883195A (fr)
BR (1) BR8002805A (fr)
CA (1) CA1138138A (fr)
CH (1) CH647906A5 (fr)
DE (1) DE3017567C2 (fr)
FR (1) FR2456439B1 (fr)
IT (1) IT1131452B (fr)
NL (1) NL7903664A (fr)
SE (1) SE448663B (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5637768A (en) * 1979-09-04 1981-04-11 Fujitsu Ltd Call current supply system
NL8100242A (nl) * 1981-01-20 1982-08-16 Philips Nv Overspanningsbeveiliging van een lijncircuit.
US4388500A (en) * 1981-02-27 1983-06-14 Wescom, Inc. Electronic hybrid
US4476351A (en) * 1982-03-25 1984-10-09 Rockwell International Corporation Subscriber loop current regulator
US5148475A (en) * 1990-04-06 1992-09-15 Harris Corporation Reduced contact resistance on a SLIC
US5172409A (en) * 1990-07-02 1992-12-15 Motorola, Inc. Precision FET control loop
US5124586A (en) * 1991-08-16 1992-06-23 Sgs-Thomson Microelectronics, Inc. Impedance multiplier
EP0858705A1 (fr) * 1996-09-03 1998-08-19 Koninklijke Philips Electronics N.V. Circuit d'alimentation a impedance electronique
DE102010011486A1 (de) * 2010-03-16 2011-09-22 Bosch Mahle Turbo Systems Gmbh & Co. Kg Rotor für eine Ladeeinrichtung

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH586983A5 (fr) * 1974-12-23 1977-04-15 Ibm
US4004109A (en) * 1975-05-09 1977-01-18 Boxall Frank S Hybrid circuit
CH599731A5 (fr) * 1976-03-02 1978-05-31 Ibm
US4064377A (en) * 1976-03-11 1977-12-20 Wescom Switching, Inc. Electronic hybrid and hybrid repeater
US4041252A (en) * 1976-06-07 1977-08-09 North Electric Company Transformerless two-wire/four-wire hybrid with DC sourcing capability
US4037065A (en) * 1976-10-04 1977-07-19 The United States Of America As Represented By The Secretary Of The Navy 20 Hz Ringdown solid state two-wire/four-wire converter
FR2371840A1 (fr) * 1976-10-04 1978-06-16 Ibm France Circuit d'interface
GB1583635A (en) * 1977-03-02 1981-01-28 Int Standard Electric Corp Subscriber line or trunk circuit
US4203012A (en) * 1977-07-14 1980-05-13 Boxall Frank S Hybrid circuit using current mirror circuits
US4142075A (en) * 1977-10-11 1979-02-27 Burr-Brown Research Corporation Interface circuit and method for telephone extension lines

Also Published As

Publication number Publication date
CH647906A5 (de) 1985-02-15
JPS643387B2 (fr) 1989-01-20
JPS55150659A (en) 1980-11-22
SE448663B (sv) 1987-03-09
BR8002805A (pt) 1980-12-16
AU5811780A (en) 1980-11-13
AU533095B2 (en) 1983-10-27
US4314106A (en) 1982-02-02
CA1138138A (fr) 1982-12-21
IT1131452B (it) 1986-06-25
NL7903664A (nl) 1980-11-12
DE3017567C2 (de) 1985-02-07
SE8003399L (sv) 1980-11-11
BE883195A (fr) 1980-11-10
DE3017567A1 (de) 1980-11-13
IT8021867A0 (it) 1980-05-07
FR2456439A1 (fr) 1980-12-05

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Legal Events

Date Code Title Description
CD Change of name or company name