JPS57148456A - Branch interface circuit with current compensating action - Google Patents

Branch interface circuit with current compensating action

Info

Publication number
JPS57148456A
JPS57148456A JP1647582A JP1647582A JPS57148456A JP S57148456 A JPS57148456 A JP S57148456A JP 1647582 A JP1647582 A JP 1647582A JP 1647582 A JP1647582 A JP 1647582A JP S57148456 A JPS57148456 A JP S57148456A
Authority
JP
Japan
Prior art keywords
interface circuit
compensating action
current compensating
branch interface
branch
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.)
Pending
Application number
JP1647582A
Other languages
English (en)
Inventor
Furederitsuku Utsudo Samiyueru
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.)
Nortel Networks Ltd
Original Assignee
Northern Telecom 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 Northern Telecom Ltd filed Critical Northern Telecom Ltd
Publication of JPS57148456A publication Critical patent/JPS57148456A/ja
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/0096—Trunk circuits
    • 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
    • H04M19/003—Arrangements for compensation of the DC flux in line transformers
JP1647582A 1981-02-09 1982-02-05 Branch interface circuit with current compensating action Pending JPS57148456A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/232,546 US4361732A (en) 1981-02-09 1981-02-09 Trunk interface circuit with current compensation

Publications (1)

Publication Number Publication Date
JPS57148456A true JPS57148456A (en) 1982-09-13

Family

ID=22873577

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1647582A Pending JPS57148456A (en) 1981-02-09 1982-02-05 Branch interface circuit with current compensating action

Country Status (5)

Country Link
US (1) US4361732A (ja)
EP (1) EP0058470B1 (ja)
JP (1) JPS57148456A (ja)
CA (1) CA1160780A (ja)
NO (1) NO153590C (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5384681A (en) * 1993-03-01 1995-01-24 Toto Ltd. Electrostatic chuck

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4563547A (en) * 1983-03-07 1986-01-07 At&T Bell Laboratories Loop-start/ground-start line interface circuit
US4607142A (en) * 1984-07-27 1986-08-19 Itt Corporation Transformer flux compensation circuit
US4731827A (en) * 1984-10-29 1988-03-15 David Systems, Inc. Interswitch line circuit
US4689816A (en) * 1985-01-15 1987-08-25 D.A.V.I.D. Systems, Inc. Three relay C. O. trunk interface
CA1241784A (en) * 1986-04-09 1988-09-06 Mitel Corporation Circuit for switching between balanced networks
CA1268873A (en) * 1987-09-22 1990-05-08 Mihail Stefan Augustin Traian Moisin Line interface circuit
US5369355A (en) * 1992-11-12 1994-11-29 B/E Aerospace Compensation circuit for transformer linearization
US8643218B2 (en) 2006-06-02 2014-02-04 Broadcom Corporation Minimizing saturation caused by power transfer in a communication system transformer

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4027235A (en) * 1976-08-13 1977-05-31 Gte Automatic Electric Laboratories Incorporated Direct current compensation circuit with current threshold detection
US4103112A (en) * 1977-10-17 1978-07-25 Northern Telecom Limited Telephone line circuit with differential loop current sensing and compensation
GB2013000A (en) * 1978-01-20 1979-08-01 Hitachi Ltd Dc D.C. magnetic field cancellation circuit
JPS54146905A (en) * 1978-05-10 1979-11-16 Hitachi Ltd Main wire two-way trunk
US4243842A (en) * 1979-04-24 1981-01-06 Northern Telecom Limited Telephone line circuit
US4289933A (en) * 1979-10-15 1981-09-15 Bell Telephone Laboratories, Incorporated Dial pulse detection

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5384681A (en) * 1993-03-01 1995-01-24 Toto Ltd. Electrostatic chuck

Also Published As

Publication number Publication date
NO153590C (no) 1986-04-16
EP0058470A1 (en) 1982-08-25
NO153590B (no) 1986-01-06
CA1160780A (en) 1984-01-17
EP0058470B1 (en) 1986-03-26
US4361732A (en) 1982-11-30
NO820366L (no) 1982-08-10

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