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CA1116767A - Circuit en pont pour alimenter une ligne d'abonne en courant continu et en tonalites - Google Patents

Circuit en pont pour alimenter une ligne d'abonne en courant continu et en tonalites

Info

Publication number
CA1116767A
CA1116767A CA000296101A CA296101A CA1116767A CA 1116767 A CA1116767 A CA 1116767A CA 000296101 A CA000296101 A CA 000296101A CA 296101 A CA296101 A CA 296101A CA 1116767 A CA1116767 A CA 1116767A
Authority
CA
Canada
Prior art keywords
resistors
telephone
power
conductors
collector
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
CA000296101A
Other languages
English (en)
Inventor
Richard N. Brooksbank
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 Overseas Ltd
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 Overseas Ltd filed Critical Plessey Overseas Ltd
Application granted granted Critical
Publication of CA1116767A publication Critical patent/CA1116767A/fr
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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
CA000296101A 1977-02-01 1978-01-31 Circuit en pont pour alimenter une ligne d'abonne en courant continu et en tonalites Expired CA1116767A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB3984/77A GB1560922A (en) 1977-02-01 1977-02-01 Telephone systems
GB03984 1977-02-01

Publications (1)

Publication Number Publication Date
CA1116767A true CA1116767A (fr) 1982-01-19

Family

ID=9768612

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000296101A Expired CA1116767A (fr) 1977-02-01 1978-01-31 Circuit en pont pour alimenter une ligne d'abonne en courant continu et en tonalites

Country Status (7)

Country Link
AU (1) AU514376B2 (fr)
CA (1) CA1116767A (fr)
FR (1) FR2379210A1 (fr)
GB (1) GB1560922A (fr)
IT (1) IT1092555B (fr)
NZ (1) NZ186342A (fr)
ZA (1) ZA78513B (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1074662B (de) * 1957-10-10 1960-02-04 Pye Limited, Cambridge (Grossbritannien) Automatisches Telefonsystem mit elektronischer Schaltung des Rufstromes zu einem Teilnehmer
US3065307A (en) * 1959-10-12 1962-11-20 Automatic Elect Lab Electronic telephone systems and ringing arrangements therefor
FR2216733B1 (fr) * 1973-01-31 1978-05-12 Labo Cent Telecommunicat

Also Published As

Publication number Publication date
IT1092555B (it) 1985-07-12
GB1560922A (en) 1980-02-13
AU3267378A (en) 1979-08-02
NZ186342A (en) 1981-02-11
ZA78513B (en) 1978-12-27
FR2379210A1 (fr) 1978-08-25
AU514376B2 (en) 1981-02-05
IT7819856A0 (it) 1978-01-31

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Legal Events

Date Code Title Description
MKEX Expiry