GB2093314B - Battery feed circuit - Google Patents

Battery feed circuit

Info

Publication number
GB2093314B
GB2093314B GB8204080A GB8204080A GB2093314B GB 2093314 B GB2093314 B GB 2093314B GB 8204080 A GB8204080 A GB 8204080A GB 8204080 A GB8204080 A GB 8204080A GB 2093314 B GB2093314 B GB 2093314B
Authority
GB
United Kingdom
Prior art keywords
feed circuit
battery feed
battery
circuit
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
GB8204080A
Other versions
GB2093314A (en
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Inc filed Critical Western Electric Co Inc
Publication of GB2093314A publication Critical patent/GB2093314A/en
Application granted granted Critical
Publication of GB2093314B publication Critical patent/GB2093314B/en
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
    • H04M19/005—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)
GB8204080A 1981-02-17 1982-02-12 Battery feed circuit Expired GB2093314B (en)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
GB2093314A GB2093314A (en) 1982-08-25
GB2093314B true GB2093314B (en) 1984-11-28

Family

ID=22882375

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8204080A Expired GB2093314B (en) 1981-02-17 1982-02-12 Battery feed circuit

Country Status (8)

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

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 (en) * 1982-05-19 1987-10-23 Cit Alcatel ELECTRONIC SUBSCRIBER
SE431704B (en) * 1982-07-06 1984-02-20 Ericsson Telefon Ab L M PROCEDURE FOR POWER SUPPLY OF A SUBSCRIBER DEVICE FROM A TELEPHONE SWITCH
GB2132448B (en) * 1982-12-07 1986-03-12 Standard Telephones Cables Ltd Telephone subscribers' line interface circuit
JPS60141006A (en) * 1983-12-28 1985-07-26 Nec Corp Impedance synthesis circuit
US4571460A (en) * 1984-03-12 1986-02-18 Northern Telecom Limited Active impedance line feed circuit with improved ground fault protection
FR2564678B1 (en) * 1984-05-18 1986-09-12 Thomson Csf Mat Tel SUBSCRIBER CIRCUIT LINK INTERFACE FOR TELEPHONE SWITCH
JPS60253364A (en) * 1984-05-30 1985-12-14 Fujitsu Ltd Internal termination type power feed circuit
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 (en) * 1986-10-24 1988-12-21 Sgs Microelettronica Spa CONTROL CIRCUIT FOR A VOLTAGE REGULATOR OF A CIRCUIT INTERFACE CONNECTION USER TELEPHONE LINE (SLIC)
JPS63314060A (en) * 1987-06-17 1988-12-22 Fujitsu Ltd Power feeding circuit
FR2642593B1 (en) * 1989-01-31 1991-04-12 Cit Alcatel ELECTRONIC SUBSCRIBER LINE CONNECTION DEVICE
WO2002033842A2 (en) * 2000-10-17 2002-04-25 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 (en) * 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 (en) * 1979-05-10 1980-11-12 Philips Nv CONNECTION FOR A TELEPHONE LINE.

Also Published As

Publication number Publication date
JPH07118751B2 (en) 1995-12-18
GB2093314A (en) 1982-08-25
SE452385B (en) 1987-11-23
IT8219649A0 (en) 1982-02-12
DE3204843A1 (en) 1982-09-09
NL8200612A (en) 1982-09-16
JPS57154966A (en) 1982-09-24
FR2500241A1 (en) 1982-08-20
NL190348C (en) 1994-01-17
NL190348B (en) 1993-08-16
DE3204843C2 (en) 1991-11-21
SE8200713L (en) 1982-08-18
IT1149642B (en) 1986-12-03
FR2500241B1 (en) 1984-12-07
CA1171989A (en) 1984-07-31

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 20020211