FR2476416B1 - - Google Patents

Info

Publication number: FR2476416B1
Authority: FR; France
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

FR8102824A

Other versions

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.)

STC PLC

Original Assignee

Standard Telephone and Cables PLC

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.)

1980-02-14

Filing date

1981-02-13

Publication date

1984-12-28

1981-02-13 Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC

1981-08-21 Publication of FR2476416A1 publication Critical patent/FR2476416A1/fr

1984-12-28 Application granted granted Critical

1984-12-28 Publication of FR2476416B1 publication Critical patent/FR2476416B1/fr

Status Granted 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
- H04M19/008—Using DC/DC converters

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Devices For Supply Of Signal Current (AREA)
Interface Circuits In Exchanges (AREA)

FR8102824A 1980-02-14 1981-02-13 Dispositif d'alimentation de ligne telephonique d'abonne Granted FR2476416A1 (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB8005000A GB2071461B (en)	1980-02-14	1980-02-14	Telephone line feed

Publications (2)

Publication Number	Publication Date
FR2476416A1 FR2476416A1 (fr)	1981-08-21
FR2476416B1 true FR2476416B1 (fr)	1984-12-28

Family

ID=10511353

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR8102824A Granted FR2476416A1 (fr)	1980-02-14	1981-02-13	Dispositif d'alimentation de ligne telephonique d'abonne

Country Status (15)

Country	Link
US (1)	US4357495A (fr)
JP (1)	JPS56129471A (fr)
AU (1)	AU541309B2 (fr)
BE (1)	BE887484A (fr)
CA (1)	CA1164592A (fr)
CH (1)	CH652882A5 (fr)
DE (1)	DE3042608C2 (fr)
EG (1)	EG14825A (fr)
FR (1)	FR2476416A1 (fr)
GB (1)	GB2071461B (fr)
IE (1)	IE51190B1 (fr)
IT (1)	IT1135449B (fr)
NZ (1)	NZ196145A (fr)
PT (1)	PT72504B (fr)
ZA (1)	ZA81422B (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4433215A (en) *	1979-02-26	1984-02-21	Tii Corporation	Solid state hybrid circuits
US4458112A (en) *	1981-10-29	1984-07-03	Telefonaktiebolaget L M Ericsson	Floating subscriber loop interface circuit
GB2132451A (en) *	1982-12-08	1984-07-04	Racal Res Ltd	Radio communications systems
JPS59125157A (ja) *	1982-12-30	1984-07-19	Fujitsu Ltd	給電回路
US4595803A (en) *	1984-02-02	1986-06-17	The United States Of America As Represented By The United States Department Of Energy	Bidirectional amplifier
US4674119A (en) *	1984-04-10	1987-06-16	Itt Corporation	Wide-band high voltage amplifier for telephone exchange subscriber line interface utilizing low voltage control circuitry
EP0163298B1 (fr) *	1984-05-30	1992-09-30	Hitachi, Ltd.	Codeur/décodeur MIC avec conversion deux fils/quatre fils
CA1240088A (fr) *	1985-11-20	1988-08-02	Mitel Corporation	Circuit de liaison a semiconducteur
US5038375A (en) *	1989-06-23	1991-08-06	Aptek Technologies, Inc.	Circuit arrangement for preventing gain from responding to frequency variation despite the presence of an isolation transformer
SE465799B (sv) *	1990-03-15	1991-10-28	Ericsson Telefon Ab L M	Anordning foer reducerad effektmatning till en abonnentlinje
US5249225A (en) *	1991-10-25	1993-09-28	Coherent Communications Systems Corp.	Self-balancing hybrid using digitally programmable attenuator for variable impedance elements
GB2315188B (en) *	1996-07-09	1999-04-14	Telspec Plc	Power supply system for telephone line wires
US20020110236A1 (en) *	2000-12-11	2002-08-15	Ravindra Karnad	Switched mode current feed methods for telephony subscriber loops
US7003102B2 (en) *	2001-10-10	2006-02-21	Pulse Engineering, Inc.	Telecommunications gateway and method
DE102007029526A1 (de)	2007-06-25	2009-01-15	Sitronic Gesellschaft für elektrotechnische Ausrüstung mbH. & Co. KG	Elektronisches Modul und Anordnung zur Signalübertragung damit

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3870896A (en) *	1972-10-30	1975-03-11	Lorain Prod Corp	Controllable current source
JPS5098212A (fr) *	1973-12-26	1975-08-05
US4048552A (en) *	1976-02-12	1977-09-13	Bell Telephone Laboratories, Incorporated	Digitally regulated inverter
JPS5389306A (en) *	1977-01-17	1978-08-05	Hitachi Ltd	Dc current supplying circuit
NL7802423A (nl) *	1978-03-06	1979-09-10	Philips Nv	Voedingsinrichting voor een lijnstroomloop.
US4176255A (en) *	1978-03-24	1979-11-27	Bell Telephone Laboratories, Incorporated	Adjustable impedance battery feed circuit
US4254305A (en) *	1979-02-07	1981-03-03	International Telephone And Telegraph Corporation	Current limited subscriber line feed circuit

1980
- 1980-02-14 GB GB8005000A patent/GB2071461B/en not_active Expired
- 1980-11-12 DE DE3042608A patent/DE3042608C2/de not_active Expired
1981
- 1981-01-21 ZA ZA00810422A patent/ZA81422B/xx unknown
- 1981-01-29 NZ NZ196145A patent/NZ196145A/en unknown
- 1981-02-09 US US06/232,913 patent/US4357495A/en not_active Expired - Fee Related
- 1981-02-11 EG EG8164A patent/EG14825A/xx active
- 1981-02-11 AU AU67160/81A patent/AU541309B2/en not_active Ceased
- 1981-02-12 CA CA000370756A patent/CA1164592A/fr not_active Expired
- 1981-02-12 BE BE2/59008A patent/BE887484A/fr not_active IP Right Cessation
- 1981-02-13 IE IE289/81A patent/IE51190B1/en unknown
- 1981-02-13 JP JP2000181A patent/JPS56129471A/ja active Pending
- 1981-02-13 IT IT19709/81A patent/IT1135449B/it active
- 1981-02-13 FR FR8102824A patent/FR2476416A1/fr active Granted
- 1981-02-13 PT PT72504A patent/PT72504B/pt unknown
- 1981-02-16 CH CH1002/81A patent/CH652882A5/de not_active IP Right Cessation

Also Published As

Publication number	Publication date
IT8119709A0 (it)	1981-02-13
US4357495A (en)	1982-11-02
GB2071461A (en)	1981-09-16
DE3042608A1 (de)	1982-02-04
CA1164592A (fr)	1984-03-27
IT1135449B (it)	1986-08-20
EG14825A (en)	1985-03-31
GB2071461B (en)	1984-01-25
ZA81422B (en)	1982-02-24
IE51190B1 (en)	1986-10-29
PT72504A (en)	1981-03-01
DE3042608C2 (de)	1983-03-31
JPS56129471A (en)	1981-10-09
CH652882A5 (de)	1985-11-29
FR2476416A1 (fr)	1981-08-21
AU541309B2 (en)	1985-01-03
AU6716081A (en)	1981-08-20
PT72504B (en)	1982-03-09
NZ196145A (en)	1984-12-14
IE810289L (en)	1981-08-14
BE887484A (fr)	1981-08-12

Legal Events

Date	Code	Title	Description
1987-12-24	ST	Notification of lapse

Publication	Publication Date	Title
FR2476022B1 (fr)	1984-08-10
FR2475466B1 (fr)	1983-09-16
FR2476343B1 (fr)	1984-12-21
FR2475373B3 (fr)	1982-12-10
FR2472931B1 (fr)	1984-10-26
FR2475858B1 (fr)	1985-03-29
FR2475638B1 (fr)	1984-09-14
FR2475966B3 (fr)	1982-11-19
FR2474173B1 (fr)	1983-04-15
FR2473179B1 (fr)	1984-12-07
FR2476044B3 (fr)	1982-11-19
FR2475015B3 (fr)	1981-12-04
FR2476416B1 (fr)	1984-12-28
FR2473217B1 (fr)	1984-05-18
FR2473511B1 (fr)	1985-04-26
FR2473864B1 (fr)	1984-12-07
FR2475139B3 (fr)	1983-10-28
FR2473193B1 (fr)	1984-03-09
FR2473735B1 (fr)	1983-03-04
FR2475323B1 (fr)	1984-06-29
FR2474028B1 (fr)	1983-03-18
FR2474187B1 (fr)	1984-01-06
FR2476200B3 (fr)	1981-12-04
FR2476110B1 (fr)	1983-06-03
FR2473057B1 (fr)	1985-01-25