IT7819856A0 - ELECTRONIC POWER BRIDGE FOR TELEPHONE SYSTEMS. - Google Patents

ELECTRONIC POWER BRIDGE FOR TELEPHONE SYSTEMS.

Info

Publication number
IT7819856A0
IT7819856A0 IT7819856A IT1985678A IT7819856A0 IT 7819856 A0 IT7819856 A0 IT 7819856A0 IT 7819856 A IT7819856 A IT 7819856A IT 1985678 A IT1985678 A IT 1985678A IT 7819856 A0 IT7819856 A0 IT 7819856A0
Authority
IT
Italy
Prior art keywords
electronic power
telephone systems
power bridge
bridge
telephone
Prior art date
Application number
IT7819856A
Other languages
Italian (it)
Other versions
IT1092555B (en
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 IT7819856A0 publication Critical patent/IT7819856A0/en
Application granted granted Critical
Publication of IT1092555B publication Critical patent/IT1092555B/en

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)
IT19856/78A 1977-02-01 1978-01-31 ELECTRONIC POWER BRIDGE FOR TELEPHONE SYSTEMS IT1092555B (en)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
IT7819856A0 true IT7819856A0 (en) 1978-01-31
IT1092555B IT1092555B (en) 1985-07-12

Family

ID=9768612

Family Applications (1)

Application Number Title Priority Date Filing Date
IT19856/78A IT1092555B (en) 1977-02-01 1978-01-31 ELECTRONIC POWER BRIDGE FOR TELEPHONE SYSTEMS

Country Status (7)

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

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1074662B (en) * 1957-10-10 1960-02-04 Pye Limited, Cambridge (Grossbritannien) Automatic telephone system with electronic switching of the ringing current to a subscriber
US3065307A (en) * 1959-10-12 1962-11-20 Automatic Elect Lab Electronic telephone systems and ringing arrangements therefor
FR2216733B1 (en) * 1973-01-31 1978-05-12 Labo Cent Telecommunicat

Also Published As

Publication number Publication date
FR2379210A1 (en) 1978-08-25
ZA78513B (en) 1978-12-27
NZ186342A (en) 1981-02-11
GB1560922A (en) 1980-02-13
AU3267378A (en) 1979-08-02
IT1092555B (en) 1985-07-12
CA1116767A (en) 1982-01-19
AU514376B2 (en) 1981-02-05

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