IT8219649A0 - Circuito di alimentazione a batteria per percorsi di comunicazione bifilari. - Google Patents

Circuito di alimentazione a batteria per percorsi di comunicazione bifilari.

Info

Publication number
IT8219649A0
IT8219649A0 IT8219649A IT1964982A IT8219649A0 IT 8219649 A0 IT8219649 A0 IT 8219649A0 IT 8219649 A IT8219649 A IT 8219649A IT 1964982 A IT1964982 A IT 1964982A IT 8219649 A0 IT8219649 A0 IT 8219649A0
Authority
IT
Italy
Prior art keywords
power circuit
battery power
communication paths
wire communication
wire
Prior art date
Application number
IT8219649A
Other languages
English (en)
Other versions
IT1149642B (it
Inventor
Denis William Aull
Dewayne Alan Spires
Original Assignee
Western Electric Co
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 Western Electric Co filed Critical Western Electric Co
Publication of IT8219649A0 publication Critical patent/IT8219649A0/it
Application granted granted Critical
Publication of IT1149642B publication Critical patent/IT1149642B/it

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
    • 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)
  • Power Engineering (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
IT19649/82A 1981-02-17 1982-02-12 Circuito di alimentazione a batteria per percorsi di comunicazione bifilari IT1149642B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US23468481A 1981-02-17 1981-02-17

Publications (2)

Publication Number Publication Date
IT8219649A0 true IT8219649A0 (it) 1982-02-12
IT1149642B IT1149642B (it) 1986-12-03

Family

ID=22882375

Family Applications (1)

Application Number Title Priority Date Filing Date
IT19649/82A IT1149642B (it) 1981-02-17 1982-02-12 Circuito di alimentazione a batteria per percorsi di comunicazione bifilari

Country Status (8)

Country Link
JP (1) JPH07118751B2 (it)
CA (1) CA1171989A (it)
DE (1) DE3204843A1 (it)
FR (1) FR2500241A1 (it)
GB (1) GB2093314B (it)
IT (1) IT1149642B (it)
NL (1) NL190348C (it)
SE (1) SE452385B (it)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4419542A (en) * 1982-05-17 1983-12-06 Bell Telephone Laboratories, Incorporated Battery feed circuit
FR2527404B1 (fr) * 1982-05-19 1987-10-23 Cit Alcatel Joncteur d'abonne electronique
SE431704B (sv) * 1982-07-06 1984-02-20 Ericsson Telefon Ab L M Forfarande vid strommatning av en abonnentapparat fran en telefonvexel
GB2132448B (en) * 1982-12-07 1986-03-12 Standard Telephones Cables Ltd Telephone subscribers' line interface circuit
JPS60141006A (ja) * 1983-12-28 1985-07-26 Nec Corp インピ−ダンス合成回路
US4571460A (en) * 1984-03-12 1986-02-18 Northern Telecom Limited Active impedance line feed circuit with improved ground fault protection
FR2564678B1 (fr) * 1984-05-18 1986-09-12 Thomson Csf Mat Tel Interface de liaison de circuit d'abonne pour autocommutateur telephonique
JPS60253364A (ja) * 1984-05-30 1985-12-14 Fujitsu Ltd 内部終端形給電回路
US4558272A (en) * 1984-07-05 1985-12-10 At&T Bell Laboratories Current characteristic shaper
US4612417A (en) * 1984-07-27 1986-09-16 At&T Bell Laboratories Electronic battery feed circuit for telephone systems
CA1231480A (en) * 1985-03-15 1988-01-12 John A. Barsellotti Constant current line circuit
IT1197917B (it) * 1986-10-24 1988-12-21 Sgs Microelettronica Spa Circuito di controllo per un regolatore di tensione di un circuito interfaccia attacco linea telefonica d'utente (slic)
JPS63314060A (ja) * 1987-06-17 1988-12-22 Fujitsu Ltd 給電回路
FR2642593B1 (fr) * 1989-01-31 1991-04-12 Cit Alcatel Dispositif electronique de raccordement de ligne d'abonne
AU2002211684A1 (en) * 2000-10-17 2002-04-29 Centillium Communications, Inc. Transformerless interface for modem

Family Cites Families (4)

* 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
DE2857168A1 (de) * 1977-11-15 1980-12-04 Gen Electric Co Ltd Current sources
JPS5542449A (en) * 1978-09-22 1980-03-25 Hitachi Ltd Current supply circuit
NL7903665A (nl) * 1979-05-10 1980-11-12 Philips Nv Aansluitschakeling voor een telefoonlijn.

Also Published As

Publication number Publication date
FR2500241A1 (fr) 1982-08-20
IT1149642B (it) 1986-12-03
JPH07118751B2 (ja) 1995-12-18
DE3204843A1 (de) 1982-09-09
SE8200713L (sv) 1982-08-18
DE3204843C2 (it) 1991-11-21
CA1171989A (en) 1984-07-31
FR2500241B1 (it) 1984-12-07
NL8200612A (nl) 1982-09-16
NL190348B (nl) 1993-08-16
SE452385B (sv) 1987-11-23
NL190348C (nl) 1994-01-17
GB2093314B (en) 1984-11-28
GB2093314A (en) 1982-08-25
JPS57154966A (en) 1982-09-24

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970225