AU5323179A - Telephony line current feeding - Google Patents

Telephony line current feeding

Info

Publication number
AU5323179A
AU5323179A AU53231/79A AU5323179A AU5323179A AU 5323179 A AU5323179 A AU 5323179A AU 53231/79 A AU53231/79 A AU 53231/79A AU 5323179 A AU5323179 A AU 5323179A AU 5323179 A AU5323179 A AU 5323179A
Authority
AU
Australia
Prior art keywords
line current
current feeding
telephony line
telephony
feeding
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.)
Abandoned
Application number
AU53231/79A
Inventor
John Spencer Arnold
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.)
Plessey Overseas Ltd
Original Assignee
Plessey Handel und Investments 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 und Investments AG filed Critical Plessey Handel und Investments AG
Publication of AU5323179A publication Critical patent/AU5323179A/en
Abandoned legal-status Critical Current

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)
  • Telephonic Communication Services (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Telephone Function (AREA)
  • Devices For Supply Of Signal Current (AREA)
AU53231/79A 1978-12-30 1979-11-27 Telephony line current feeding Abandoned AU5323179A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7850384A GB2042848B (en) 1978-12-30 1978-12-30 Line current feed and hybrid arrangement (sytem x)
GB5038478 1978-12-30

Publications (1)

Publication Number Publication Date
AU5323179A true AU5323179A (en) 1980-07-03

Family

ID=10502016

Family Applications (1)

Application Number Title Priority Date Filing Date
AU53231/79A Abandoned AU5323179A (en) 1978-12-30 1979-11-27 Telephony line current feeding

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
DE3278899D1 (en) * 1981-04-06 1988-09-15 Northern Telecom Ltd 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
IE48895B1 (en) 1985-06-12
ZA796287B (en) 1980-11-26
GB2042848B (en) 1983-01-06
FR2445666A1 (en) 1980-07-25
IE792528L (en) 1980-06-30
NL7909148A (en) 1980-07-02
SE7910670L (en) 1980-07-01
JPS5593363A (en) 1980-07-15
BR7907891A (en) 1980-07-29
NZ192462A (en) 1982-05-25
FR2445666B1 (en) 1984-10-12
DE2952259A1 (en) 1980-07-17
GB2042848A (en) 1980-09-24

Similar Documents

Publication Publication Date Title
AU538261B2 (en) Telephone line feed circuit
AU527132B2 (en) Flat cable terminal
GB2021846B (en) Flat type feeder cable
AU540480B2 (en) Constant current telephone line circuit
AU522954B2 (en) Consumable zinc-gel anode
AU542803B2 (en) Telephone line feed circuit
AU530947B2 (en) Current limiter
AU528435B2 (en) Blacker-than-black current compensation
AU4835879A (en) Connecting circuit for telephone line
AU519655B2 (en) Electrical wallplate fitting
AU527499B2 (en) Non-consumable electrode
AU4635579A (en) Halogen-charcoal cathode
AU5323179A (en) Telephony line current feeding
AU531182B2 (en) Current limiter
AU535131B2 (en) Telephone constant current line feed circuit
AU512887B2 (en) Supply circuit fora subscribers line circuit
AU541812B2 (en) Telephone line interface
GB2035753B (en) Monitoring telephone line current
AU517263B2 (en) Terminal cover
AU521561B2 (en) Electrode
AU531400B2 (en) Rib-grid cathode
SU674920A1 (en) Feeder
AU512970B2 (en) Electrical winding
AU521542B2 (en) Electrical switchboard structure
AU511713B2 (en) Telephone line circuit