SE8008417L - Matning av telefonlinjer - Google Patents

Matning av telefonlinjer

Info

Publication number: SE8008417L
Authority: SE; Sweden
Prior art keywords: voltage; output; line; operational amplifier; amplifier
Prior art date: 1979-12-06

Application number

SE8008417A

Other languages

Unknown language ( )

English (en)

Swedish (sv)

Inventor

A W Sweet

Original Assignee

Standard Telephones Cables 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.)

1979-12-06

Filing date

1980-12-01

Publication date

1981-06-07

1980-12-01 Application filed by Standard Telephones Cables Ltd filed Critical Standard Telephones Cables Ltd

1981-06-07 Publication of SE8008417L publication Critical patent/SE8008417L/

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)

SE8008417A 1979-12-06 1980-12-01 Matning av telefonlinjer SE8008417L (sv)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB7942104A GB2065418B (en)	1979-12-06	1979-12-06	Telephone line feed

Publications (1)

Publication Number	Publication Date
SE8008417L true SE8008417L (sv)	1981-06-07

Family

ID=10509653

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
SE8008417A SE8008417L (sv)	1979-12-06	1980-12-01	Matning av telefonlinjer

Country Status (14)

Country	Link
US (1)	US4431869A (fr)
JP (1)	JPS56100562A (fr)
AU (1)	AU542803B2 (fr)
BE (1)	BE890403R (fr)
DE (1)	DE3043907A1 (fr)
EG (1)	EG14711A (fr)
FR (1)	FR2471709A1 (fr)
GB (1)	GB2065418B (fr)
IT (1)	IT1134634B (fr)
NL (1)	NL8006572A (fr)
NZ (1)	NZ195746A (fr)
PT (1)	PT72170B (fr)
SE (1)	SE8008417L (fr)
ZA (1)	ZA807497B (fr)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0057009B1 (fr) *	1981-01-28	1985-07-03	Hitachi, Ltd.	Circuit d'alimentation en courant
CA1157175A (fr) *	1981-02-20	1983-11-15	Mitel Corporation	Circuit economiseur d'energie pour ligne
SE431704B (sv) *	1982-07-06	1984-02-20	Ericsson Telefon Ab L M	Forfarande vid strommatning av en abonnentapparat fran en telefonvexel
SE433284B (sv) *	1982-09-17	1984-05-14	Ericsson Telefon Ab L M	Anordning for strommatning av en abonnentapparat
DE3235085A1 (de) *	1982-09-22	1984-03-22	Siemens AG, 1000 Berlin und 8000 München	Schleifenstromeinspeisung fuer einen kennzeichenumsetzer
SE433285B (sv) *	1982-09-22	1984-05-14	Ericsson Telefon Ab L M	Anordning for strommatning av en abonnentapparat
US4577064A (en) *	1983-04-29	1986-03-18	Gte Lenkurt Incorporated	Auto-balance circuit for battery feed in a telephone circuit
US4532381A (en) *	1984-02-13	1985-07-30	Northern Telecom Limited	Active impedance line feed circuit
US4602130A (en) *	1984-10-15	1986-07-22	Itt Corporation	Dual voltage source feed circuit configuration for a telephone line circuit
CA1231480A (fr) *	1985-03-15	1988-01-12	John A. Barsellotti	Circuit de ligne a courant constant
CA1233583A (fr) *	1985-06-18	1988-03-01	Francis Y. Hung	Dispositif de protection pour circuit d'interface de ligne d'abonne du telephone
US4953160A (en) *	1988-02-24	1990-08-28	Integrated Network Corporation	Digital data over voice communication
US5050210A (en) *	1989-03-10	1991-09-17	Reliance Comm/Tec Corporation	Metallic current limiter
EP0450884B1 (fr) *	1990-04-04	1996-06-12	Seiscor Technologies, Inc.	Circuit d'interface pour ligne d'abonné délivrant du courant régulé
US5103387A (en) *	1991-01-31	1992-04-07	Northern Telecom Limited	High voltage converter
US5461671A (en) *	1992-06-05	1995-10-24	Murata Mfg. Co., Ltd.	Telephone line power utility circuit
US5515433A (en) *	1994-08-30	1996-05-07	Reltec Corporation	Resistance forward telephone line feed circuit
EP0876726A2 (fr) *	1996-09-26	1998-11-11	Koninklijke Philips Electronics N.V.	Circuit d'alimentation, dispositif de telecommunications et procede de gestion d'alimentation courant continu a plusieurs pentes
WO1998049782A2 (fr) *	1997-04-29	1998-11-05	Koninklijke Philips Electronics N.V.	Dispositif de telecommunication par fil et circuit d'alimentation
US6480510B1 (en) *	1998-07-28	2002-11-12	Serconet Ltd.	Local area network of serial intelligent cells
US6956826B1 (en)	1999-07-07	2005-10-18	Serconet Ltd.	Local area network for distributing data communication, sensing and control signals
US6690677B1 (en)	1999-07-20	2004-02-10	Serconet Ltd.	Network for telephony and data communication
US6549616B1 (en) *	2000-03-20	2003-04-15	Serconet Ltd.	Telephone outlet for implementing a local area network over telephone lines and a local area network using such outlets
FR2819364B1 (fr) *	2001-01-08	2003-04-11	Cit Alcatel	Dispositif de telealementation d'uin terminal dans un reseau de telecommunication, concentrateur, et repeteur comportant un tel dispositif
IL154234A (en) *	2003-01-30	2010-12-30	Mosaid Technologies Inc	Method and system for providing dc power on local telephone lines
IL159838A0 (en)	2004-01-13	2004-06-20	Yehuda Binder	Information device

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5098212A (fr) *	1973-12-26	1975-08-05
NL7402575A (nl) *	1974-02-26	1975-08-28	Philips Nv	Elektronisch telefoontoestel.
CH586983A5 (fr) *	1974-12-23	1977-04-15	Ibm
US4037066A (en) *	1975-03-20	1977-07-19	Lorain Products Corporation	Repeater for transmission lines
US4048552A (en) *	1976-02-12	1977-09-13	Bell Telephone Laboratories, Incorporated	Digitally regulated inverter
FR2377286A1 (fr) *	1977-01-18	1978-08-11	Kleber Colombes	Pneumatique
FR2404976A1 (fr) *	1977-09-30	1979-04-27	Materiel Telephonique	Circuit d'alimentation de ligne
NL7802423A (nl) *	1978-03-06	1979-09-10	Philips Nv	Voedingsinrichting voor een lijnstroomloop.
US4241239A (en) *	1978-02-24	1980-12-23	International Telephone And Telegraph Corporation	Fluxbucking line transformer with electronic equivalent line terminating impedance
DE2850905C2 (de) *	1978-11-24	1985-11-14	Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg	Schaltungsanordnung zur Speisung einer Teilnehmerendeinrichtung
US4268723A (en) *	1979-09-04	1981-05-19	Western Electric Company	Circuits and methods for initializing the loop current of a telephone set

1979
- 1979-12-06 GB GB7942104A patent/GB2065418B/en not_active Expired
1980
- 1980-11-21 DE DE19803043907 patent/DE3043907A1/de not_active Withdrawn
- 1980-12-01 ZA ZA00807497A patent/ZA807497B/xx unknown
- 1980-12-01 SE SE8008417A patent/SE8008417L/ not_active Application Discontinuation
- 1980-12-03 EG EG80751A patent/EG14711A/xx active
- 1980-12-03 NL NL8006572A patent/NL8006572A/nl not_active Application Discontinuation
- 1980-12-03 AU AU65016/80A patent/AU542803B2/en not_active Ceased
- 1980-12-03 US US06/212,347 patent/US4431869A/en not_active Expired - Lifetime
- 1980-12-04 NZ NZ195746A patent/NZ195746A/en unknown
- 1980-12-05 PT PT72170A patent/PT72170B/pt unknown
- 1980-12-05 JP JP17195980A patent/JPS56100562A/ja active Pending
- 1980-12-05 FR FR8025828A patent/FR2471709A1/fr active Granted
- 1980-12-09 IT IT26509/80A patent/IT1134634B/it active
1981
- 1981-09-18 BE BE2/59366A patent/BE890403R/fr not_active IP Right Cessation

Also Published As

Publication number	Publication date
BE890403R (fr)	1982-01-18
NZ195746A (en)	1984-10-19
IT1134634B (it)	1986-08-13
DE3043907A1 (de)	1981-06-11
GB2065418A (en)	1981-06-24
NL8006572A (nl)	1981-07-01
FR2471709A1 (fr)	1981-06-19
PT72170B (en)	1982-01-05
ZA807497B (en)	1981-11-25
GB2065418B (en)	1984-02-15
AU6501680A (en)	1981-06-11
AU542803B2 (en)	1985-03-14
IT8026509A0 (it)	1980-12-09
US4431869A (en)	1984-02-14
JPS56100562A (en)	1981-08-12
PT72170A (en)	1981-01-01
EG14711A (en)	1985-03-31
FR2471709B1 (fr)	1984-12-28

Legal Events

Date

Code

Title

Description

1995-02-28

NAV

Patent application has lapsed

Ref document number: 8008417-1

Format of ref document f/p: F

Publication	Publication Date	Title
SE8008417L (sv)	1981-06-07	Matning av telefonlinjer
GB1178348A (en)	1970-01-21	Negative Feedback Circuit Employing Combination Amplifier and Lead-Lag Compensation Network.
GB1470577A (en)	1977-04-14	Equalizers
GB1252536A (fr)	1971-11-03
US3984665A (en)	1976-10-05	Process controller
GB998413A (en)	1965-07-14	Improvements in variable impedance devices
KR840001015A (ko)	1984-03-26	가변전자 임피던스 회로 장치
ES458823A1 (es)	1978-06-16	Perfeccionamientos en los convertidores de segmento digital-analogo.
SE8008104L (sv)	1981-05-30	Matningskrets for telefonledning
SE7713576L (sv)	1978-06-08	Kopplingsanordning for ett styrbart elektroniskt motstand
WO1979000714A1 (fr)	1979-10-04	Circuit de commande de vitesse d'un moteur
ES433064A1 (es)	1976-11-01	Perfeccionamientos en sistemas de compensacion de senales perturbadoras de corriente.
JPS57202125A (en)	1982-12-10	Variable reference voltage generating circuit
FR2334258A1 (fr)	1977-07-01	Installation de commutation electronique pour telecommandes
JPS6471317A (en)	1989-03-16	Threshold comparing circuit
DE3479855D1 (en)	1989-10-26	Method and apparatus for negative feedback of movement induced voltage in a loudspeaker
JPS57121322A (en)	1982-07-28	Time limit relay
DE3369039D1 (en)	1987-02-12	Integrated amplifier circuit
GB1481535A (en)	1977-08-03	Current regulator
FR2329012A1 (fr)	1977-05-20	Dispositif de regulation par impulsions proportionnelles
JPS5514780A (en)	1980-02-01	Active filter
EP0318811A3 (fr)	1990-03-28	Amplificateur de puissance à dynamique de sortie agrandie
JPS575410A (en)	1982-01-12	Equalizer amplifier
JPS5724131A (en)	1982-02-08	Unidirectional power transmission and communication system
JPS5683282A (en)	1981-07-07	Armature current controlling device