SE453240B - Anordning i ett telekommunikationssystem for att strommata en telefonapparat - Google Patents

Anordning i ett telekommunikationssystem for att strommata en telefonapparat

Info

Publication number
SE453240B
SE453240B SE8602080A SE8602080A SE453240B SE 453240 B SE453240 B SE 453240B SE 8602080 A SE8602080 A SE 8602080A SE 8602080 A SE8602080 A SE 8602080A SE 453240 B SE453240 B SE 453240B
Authority
SE
Sweden
Prior art keywords
amplifiers
circuit
line
speech signal
subscriber line
Prior art date
Application number
SE8602080A
Other languages
English (en)
Swedish (sv)
Other versions
SE8602080D0 (sv
SE8602080L (sv
Inventor
H V Johansson
A Rydin
Original Assignee
Ericsson Telefon Ab L M
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20364443&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=SE453240(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to SE8602080A priority Critical patent/SE453240B/sv
Publication of SE8602080D0 publication Critical patent/SE8602080D0/xx
Priority to EP87902850A priority patent/EP0273922B1/de
Priority to DE8787902850T priority patent/DE3774412D1/de
Priority to JP62502965A priority patent/JP2744784B2/ja
Priority to KR1019870701226A priority patent/KR910003495B1/ko
Priority to PCT/SE1987/000219 priority patent/WO1987007104A1/en
Publication of SE8602080L publication Critical patent/SE8602080L/xx
Publication of SE453240B publication Critical patent/SE453240B/sv
Priority to US07/393,007 priority patent/US4961222A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/40—Applications of speech amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/005—Interface circuits for subscriber lines
    • 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)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
SE8602080A 1986-05-06 1986-05-06 Anordning i ett telekommunikationssystem for att strommata en telefonapparat SE453240B (sv)

Priority Applications (7)

Application Number Priority Date Filing Date Title
SE8602080A SE453240B (sv) 1986-05-06 1986-05-06 Anordning i ett telekommunikationssystem for att strommata en telefonapparat
EP87902850A EP0273922B1 (de) 1986-05-06 1987-04-28 Vorrichtung in einem fernübertragungssystem für stromversorgung eines fernsprechersatzes
DE8787902850T DE3774412D1 (de) 1986-05-06 1987-04-28 Vorrichtung in einem fernuebertragungssystem fuer stromversorgung eines fernsprechersatzes.
JP62502965A JP2744784B2 (ja) 1986-05-06 1987-04-28 電気通信システム内で使用される電話器給電装置
KR1019870701226A KR910003495B1 (ko) 1986-05-06 1987-04-28 전기통신시스템에서 전화기에 전력을 공급하는 장치
PCT/SE1987/000219 WO1987007104A1 (en) 1986-05-06 1987-04-28 Apparatus in a telecommunication system for supplying power to a telephone set
US07/393,007 US4961222A (en) 1986-05-06 1989-08-10 Apparatus in a telecommunication system for supplying power to a telephone set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8602080A SE453240B (sv) 1986-05-06 1986-05-06 Anordning i ett telekommunikationssystem for att strommata en telefonapparat

Publications (3)

Publication Number Publication Date
SE8602080D0 SE8602080D0 (sv) 1986-05-06
SE8602080L SE8602080L (sv) 1987-11-07
SE453240B true SE453240B (sv) 1988-01-18

Family

ID=20364443

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8602080A SE453240B (sv) 1986-05-06 1986-05-06 Anordning i ett telekommunikationssystem for att strommata en telefonapparat

Country Status (7)

Country Link
US (1) US4961222A (de)
EP (1) EP0273922B1 (de)
JP (1) JP2744784B2 (de)
KR (1) KR910003495B1 (de)
DE (1) DE3774412D1 (de)
SE (1) SE453240B (de)
WO (1) WO1987007104A1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5289359A (en) * 1991-02-13 1994-02-22 Charles Industries, Limited DC-DC power converter including sensing means for providing an output when the reserve power of the converter falls below a predetermined amount for a given input voltage
JP2905616B2 (ja) * 1991-05-20 1999-06-14 シャープ株式会社 通信端末装置
JPH0568120A (ja) * 1991-09-05 1993-03-19 Fujitsu Ltd 給電回路
SE501975C2 (sv) * 1993-11-09 1995-07-03 Ericsson Telefon Ab L M Gränssnittskrets mellan fyrtrådsledning och tvåtrådsledning
SE9400186D0 (sv) * 1994-01-21 1994-01-21 Ericsson Telefon Ab L M Förfarande i ett telekommunikationssystem
SE502276C2 (sv) * 1994-01-21 1995-09-25 Ericsson Telefon Ab L M Förfarande och anordning för generering av en ringsignal
WO1998010582A1 (en) * 1996-09-03 1998-03-12 Philips Electronics N.V. Electronic impedance supply circuit
FR2767933A1 (fr) * 1997-08-27 1999-02-26 Philips Electronics Nv Circuit adaptateur de tension d'alimentation
WO1999053627A1 (en) 1998-04-10 1999-10-21 Chrimar Systems, Inc. Doing Business As Cms Technologies System for communicating with electronic equipment on a network
US7103178B2 (en) * 2004-07-09 2006-09-05 Intersil Americas Inc. Speech amplifier-resident mechanism for controllably supplying power to a line circuit

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4300023A (en) * 1979-08-13 1981-11-10 Motorola, Inc. Hybrid circuit
DE3007549A1 (de) * 1980-02-28 1981-09-10 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Anordnung zur speisung einer teilnehmereinrichtung
DE3007468A1 (de) * 1980-02-28 1981-09-10 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Teilnehmerspeiseanordnung
US4322586A (en) * 1980-11-13 1982-03-30 Northern Telecom Limited Transformerless line interface circuit
JPS57178470A (en) * 1981-04-28 1982-11-02 Hitachi Ltd Terminal feeding system
JPS5883492A (ja) * 1981-11-12 1983-05-19 Nec Corp 加入者回路の低電力化方式
US4600811A (en) * 1982-12-28 1986-07-15 Nec Corporation Subscriber line interface circuit
JPS615669A (ja) * 1984-06-14 1986-01-11 Fujitsu Ltd 加入者回路の定電流給電回路
JPS611161A (ja) * 1984-06-14 1986-01-07 Fujitsu Ltd 給電回路制御方式
JPS611159A (ja) * 1984-06-14 1986-01-07 Fujitsu Ltd 加入者回路の定電流給電回路
FR2577737B1 (fr) * 1985-02-15 1987-04-17 Thomson Csf Circuit d'interface de ligne d'abonne telephonique avec mode de veille a puissance reduite

Also Published As

Publication number Publication date
JPS63503269A (ja) 1988-11-24
EP0273922A1 (de) 1988-07-13
DE3774412D1 (de) 1991-12-12
SE8602080D0 (sv) 1986-05-06
SE8602080L (sv) 1987-11-07
KR910003495B1 (ko) 1991-06-01
US4961222A (en) 1990-10-02
EP0273922B1 (de) 1991-11-06
JP2744784B2 (ja) 1998-04-28
WO1987007104A1 (en) 1987-11-19
KR880701506A (ko) 1988-07-27

Similar Documents

Publication Publication Date Title
SE453240B (sv) Anordning i ett telekommunikationssystem for att strommata en telefonapparat
JPH04225667A (ja) 調整済み電流を生じる加入者回線インターフェース回路
US5239579A (en) Adaptive amplifier circuit
US4020294A (en) Presence and direction of line current flow detector
US4376876A (en) DC Supply for an electronic signalling device
US4007340A (en) Distance-related variable gain amplifier
US3786200A (en) Amplifier for use in communication systems
JP2000078622A (ja) バッテリ切替型加入者ル―プインタ―フェ―ス回路
US4577064A (en) Auto-balance circuit for battery feed in a telephone circuit
US3731012A (en) Current limiting and resistance monitoring circuit
GB2143104A (en) Shunt regulator for hands free telephone
US4800586A (en) Compensation circuit for use with an integrating amplifier
US4476351A (en) Subscriber loop current regulator
GB2126046A (en) Telephone circuit
US3496308A (en) Level control for subscriber carrier system
US4723278A (en) Voice circuit of telephone
KR100343343B1 (ko) 호출음신호발생방법및장치
US4388497A (en) Telephone power supply arrangement
JPS6115495A (ja) 電話加入者回路
GB2066026A (en) Active speech network for a telephone set
CA2342557C (en) Constant current line circuit with class features
EP1243125B1 (de) Teilnehmerleitungsschnittstellenschaltung
US2977420A (en) Telephone subscriber's supervisory circuits
KR100342241B1 (ko) 전화기용 선로 인터페이스 회로
KR200202421Y1 (ko) 전화기용 선로 인터페이스 회로

Legal Events

Date Code Title Description
NAL Patent in force

Ref document number: 8602080-7

Format of ref document f/p: F

NUG Patent has lapsed