BR7907891A - LINE CURRENT POWER SUPPLY CIRCUITS FOR TELECOMMUNICATIONS - Google Patents

LINE CURRENT POWER SUPPLY CIRCUITS FOR TELECOMMUNICATIONS

Info

Publication number
BR7907891A
BR7907891A BR7907891A BR7907891A BR7907891A BR 7907891 A BR7907891 A BR 7907891A BR 7907891 A BR7907891 A BR 7907891A BR 7907891 A BR7907891 A BR 7907891A BR 7907891 A BR7907891 A BR 7907891A
Authority
BR
Brazil
Prior art keywords
telecommunications
power supply
current power
supply circuits
line current
Prior art date
Application number
BR7907891A
Other languages
Portuguese (pt)
Inventor
J Arnold
Original Assignee
Plessey Handel Investment Ag
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 Plessey Handel Investment Ag filed Critical Plessey Handel Investment Ag
Publication of BR7907891A publication Critical patent/BR7907891A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/54—Circuits using the same frequency for two directions of communication
    • H04B1/58—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
    • H04B1/581—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa using a transformer
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Telephonic Communication Services (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Telephone Function (AREA)
  • Devices For Supply Of Signal Current (AREA)
BR7907891A 1978-12-30 1979-12-04 LINE CURRENT POWER SUPPLY CIRCUITS FOR TELECOMMUNICATIONS BR7907891A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7850384A GB2042848B (en) 1978-12-30 1978-12-30 Line current feed and hybrid arrangement (sytem x)

Publications (1)

Publication Number Publication Date
BR7907891A true BR7907891A (en) 1980-07-29

Family

ID=10502016

Family Applications (1)

Application Number Title Priority Date Filing Date
BR7907891A BR7907891A (en) 1978-12-30 1979-12-04 LINE CURRENT POWER SUPPLY CIRCUITS FOR TELECOMMUNICATIONS

Country Status (11)

Country Link
JP (1) JPS5593363A (en)
AU (1) AU5323179A (en)
BR (1) BR7907891A (en)
DE (1) DE2952259A1 (en)
FR (1) FR2445666A1 (en)
GB (1) GB2042848B (en)
IE (1) IE48895B1 (en)
NL (1) NL7909148A (en)
NZ (1) NZ192462A (en)
SE (1) SE7910670L (en)
ZA (1) ZA796287B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3007791A1 (en) * 1980-02-29 1981-09-10 Siemens AG, 1000 Berlin und 8000 München CIRCUIT ARRANGEMENT FOR INCREASING THE INDUCTIVITY OF A TRANSMITTER
EP0063414B1 (en) * 1981-04-06 1988-08-10 Northern Telecom Limited Apparatus for coupling signals to or from a two-wire line
DE3138726A1 (en) * 1981-09-29 1983-04-07 Siemens AG, 1000 Berlin und 8000 München Subscriber connection circuit for connecting two-wire subscriber connection lines to a four-wire through-connecting digital time division multiplex exchange
FR2552288B1 (en) * 1983-09-15 1989-03-24 Telecommunications Sa TELEPHONE SUBSCRIBER
US4595802A (en) * 1983-11-29 1986-06-17 Northern Telecom Limited Hybrid circuit

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2063475A5 (en) * 1969-10-17 1971-07-09 Labo Cent Telecommunicat
FR2131038A5 (en) * 1971-03-30 1972-11-10 Ass Ouvriers Instr Preci
FR2166696A5 (en) * 1972-01-04 1973-08-17 Ass Ouvriers Instr Preci
US3955052A (en) * 1974-11-18 1976-05-04 Tadiran Israel Electronics Industries Ltd. Subscriber unit particularly useful for time-division-multiplex system

Also Published As

Publication number Publication date
SE7910670L (en) 1980-07-01
ZA796287B (en) 1980-11-26
FR2445666B1 (en) 1984-10-12
FR2445666A1 (en) 1980-07-25
NL7909148A (en) 1980-07-02
GB2042848A (en) 1980-09-24
IE48895B1 (en) 1985-06-12
DE2952259A1 (en) 1980-07-17
IE792528L (en) 1980-06-30
GB2042848B (en) 1983-01-06
JPS5593363A (en) 1980-07-15
AU5323179A (en) 1980-07-03
NZ192462A (en) 1982-05-25

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