CA1114972A - Circuit de ligne telephonique - Google Patents

Circuit de ligne telephonique

Info

Publication number: CA1114972A
Authority: CA; Canada
Prior art keywords: balance; winding; current; primary winding; split primary
Prior art date: 1979-04-20
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

CA326,001A

Other languages

English (en)

Inventor

William D. Gibb

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.)

1979-04-20

Filing date

1979-04-20

Publication date

1981-12-22

1979-04-20 Application filed by Northern Telecom Ltd filed Critical Northern Telecom Ltd

1979-04-20 Priority to CA326,001A priority Critical patent/CA1114972A/fr

1981-12-22 Application granted granted Critical

1981-12-22 Publication of CA1114972A publication Critical patent/CA1114972A/fr

Status Expired legal-status Critical Current

Links

238000004804 winding Methods 0.000 claims abstract description 124
230000004907 flux Effects 0.000 claims abstract description 14
239000003990 capacitor Substances 0.000 claims description 13
238000004891 communication Methods 0.000 claims description 6
238000000034 method Methods 0.000 claims description 4
230000008878 coupling Effects 0.000 claims 1
238000010168 coupling process Methods 0.000 claims 1
238000005859 coupling reaction Methods 0.000 claims 1
230000006872 improvement Effects 0.000 description 3
230000009467 reduction Effects 0.000 description 2
230000001105 regulatory effect Effects 0.000 description 2
230000004044 response Effects 0.000 description 1
238000009420 retrofitting Methods 0.000 description 1
230000035939 shock Effects 0.000 description 1
239000011800 void material Substances 0.000 description 1

Landscapes

Devices For Supply Of Signal Current (AREA)

CA326,001A 1979-04-20 1979-04-20 Circuit de ligne telephonique Expired CA1114972A (fr)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
CA326,001A CA1114972A (fr)	1979-04-20	1979-04-20	Circuit de ligne telephonique

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA326,001A CA1114972A (fr)	1979-04-20	1979-04-20	Circuit de ligne telephonique

Publications (1)

Publication Number	Publication Date
CA1114972A true CA1114972A (fr)	1981-12-22

Family

ID=4114026

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA326,001A Expired CA1114972A (fr)	1979-04-20	1979-04-20	Circuit de ligne telephonique

Country Status (1)

Country	Link
CA (1)	CA1114972A (fr)

1979
- 1979-04-20 CA CA326,001A patent/CA1114972A/fr not_active Expired

Similar Documents

Publication	Publication Date	Title
CA1111589A (fr)	1981-10-27	Circuit hybride sans transformateur a couplage direct
EP0096965B1 (fr)	1986-08-20	Circuit d'alimentation de ligne à impédance active assisté par un transformateur
US4503289A (en)	1985-03-05	Line circuit with flux compensation and active impedance termination
US4300023A (en)	1981-11-10	Hybrid circuit
US4088843A (en)	1978-05-09	Electronic current feed circuit
US4103112A (en)	1978-07-25	Telephone line circuit with differential loop current sensing and compensation
US4243842A (en)	1981-01-06	Telephone line circuit
US4027235A (en)	1977-05-31	Direct current compensation circuit with current threshold detection
US5444777A (en)	1995-08-22	Battery feed for telephone line cards
US3714548A (en)	1973-01-30	D.c. compensation circuit for miniature transformers
GB1563803A (en)	1980-04-02	Telecommunications transmission and signalling curcuits
US4677669A (en)	1987-06-30	Battery feed circuit for a pair of subscriber lines
US4776007A (en)	1988-10-04	Solid state trunk circuit
EP0163275B2 (fr)	1993-09-08	Circuit d'alimentation pour une ligne d'abonné
US4064449A (en)	1977-12-20	Direct current compensation circuit for transformers
US4767980A (en)	1988-08-30	Inductance multiplier circuit
US4588860A (en)	1986-05-13	Battery feed circuit for telephone subscriber line
US4358645A (en)	1982-11-09	Loop sensing circuit for use with a subscriber loop interface circuit
US4414435A (en)	1983-11-08	Interface circuit with flux cancelling transformer circuit
US3899646A (en)	1975-08-12	Telephone set speech network
US4562525A (en)	1985-12-31	DC Power supply circuit for line interface circuits
DE69228407T2 (de)	1999-06-24	Strombegrenzte Teilnehmerschnittstellenschaltung
EP0356109A2 (fr)	1990-02-28	Bobine d'induction électronique
EP0109705B1 (fr)	1987-04-01	Circuit d'abonné pour un réseau téléphonique
CA1074034A (fr)	1980-03-18	Circuit de ligne telephonique avec detection de courant de boucle differentiel et compensation

Legal Events

Date	Code	Title	Description
1998-12-22	MKEX	Expiry