DE3268433D1 - Subscriber line circuit comprising a controllable dc/dc converter as a battery feed circuit - Google Patents

Subscriber line circuit comprising a controllable dc/dc converter as a battery feed circuit

Info

Publication number
DE3268433D1
DE3268433D1 DE8282108928T DE3268433T DE3268433D1 DE 3268433 D1 DE3268433 D1 DE 3268433D1 DE 8282108928 T DE8282108928 T DE 8282108928T DE 3268433 T DE3268433 T DE 3268433T DE 3268433 D1 DE3268433 D1 DE 3268433D1
Authority
DE
Germany
Prior art keywords
circuit
controllable
converter
subscriber line
battery feed
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
DE8282108928T
Other languages
English (en)
Inventor
Kunio Nagashima
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Application granted granted Critical
Publication of DE3268433D1 publication Critical patent/DE3268433D1/de
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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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)
DE8282108928T 1981-09-28 1982-09-27 Subscriber line circuit comprising a controllable dc/dc converter as a battery feed circuit Expired DE3268433D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56153258A JPS5854773A (ja) 1981-09-28 1981-09-28 加入者回路

Publications (1)

Publication Number Publication Date
DE3268433D1 true DE3268433D1 (en) 1986-02-20

Family

ID=15558516

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8282108928T Expired DE3268433D1 (en) 1981-09-28 1982-09-27 Subscriber line circuit comprising a controllable dc/dc converter as a battery feed circuit

Country Status (5)

Country Link
US (1) US4490580A (de)
EP (1) EP0075914B1 (de)
JP (1) JPS5854773A (de)
CA (1) CA1186083A (de)
DE (1) DE3268433D1 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4674119A (en) * 1984-04-10 1987-06-16 Itt Corporation Wide-band high voltage amplifier for telephone exchange subscriber line interface utilizing low voltage control circuitry
EP0165363B1 (de) * 1984-06-20 1988-08-31 International Business Machines Corporation Schaltung zur Erkennung von Stromänderungen
US4656659A (en) * 1985-07-18 1987-04-07 Itt Corporation Programmable ring signal generator
GB8606151D0 (en) * 1986-03-12 1986-04-16 Gen Electric Co Plc Telephone system circuit
FR2600476A1 (fr) * 1986-06-19 1987-12-24 Hewlett Packard France Sa Dispositif de connexion entre un reseau de donnees et une pluralite de groupes de terminaux
NL8601774A (nl) * 1986-07-08 1988-02-01 Philips Nv Dc-voedingsinrichting voor een telecommunicatieleiding.
DE4130213C2 (de) * 1991-09-11 1996-06-13 Siemens Uebertragungssys Gmbh Steuerschaltung für einen stromregelnden Schaltregler
JP2659297B2 (ja) * 1991-09-19 1997-09-30 株式会社クボタ 複数条用の苗移植機
US5828748A (en) * 1996-06-27 1998-10-27 Lucent Technologies Method for customizing operation of a line interface circuit in a telecommunications network
US5754644A (en) * 1996-06-27 1998-05-19 Lucent Technologies Inc. Method for customizing operation of a battery feed circuit in a telecommunications network
US6310953B1 (en) * 1997-07-24 2001-10-30 Fujitsu Limited Subscriber circuit
US7342388B2 (en) * 2006-06-23 2008-03-11 Winbond Electronics Corporation Low ripple line-state dependent PWM DCDC converter controllers and methods for SLIC switching load regulation

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1583635A (en) * 1977-03-02 1981-01-28 Int Standard Electric Corp Subscriber line or trunk circuit
US4254305A (en) * 1979-02-07 1981-03-03 International Telephone And Telegraph Corporation Current limited subscriber line feed circuit
NL7903662A (nl) * 1979-05-10 1980-11-12 Philips Nv Lijncircuit.
DE3264466D1 (en) * 1981-01-28 1985-08-08 Hitachi Ltd Current supply circuit

Also Published As

Publication number Publication date
JPH0237743B2 (de) 1990-08-27
US4490580A (en) 1984-12-25
JPS5854773A (ja) 1983-03-31
EP0075914B1 (de) 1986-01-08
EP0075914A1 (de) 1983-04-06
CA1186083A (en) 1985-04-23

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition