KR870000076B1 - 전화교환국으로부터 가입자전화기에 전류를 공급하는 방법 - Google Patents

전화교환국으로부터 가입자전화기에 전류를 공급하는 방법 Download PDF

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Publication number
KR870000076B1
KR870000076B1 KR1019830002975A KR830002975A KR870000076B1 KR 870000076 B1 KR870000076 B1 KR 870000076B1 KR 1019830002975 A KR1019830002975 A KR 1019830002975A KR 830002975 A KR830002975 A KR 830002975A KR 870000076 B1 KR870000076 B1 KR 870000076B1
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KR
South Korea
Prior art keywords
voltage
telephone
subscriber
current
voltage source
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.)
Expired
Application number
KR1019830002975A
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English (en)
Korean (ko)
Other versions
KR840005636A (ko
Inventor
햐르마 요한슨 얀
약키이에 썬드발 닐스
Original Assignee
테레포오낙티이에보라겟트 엘, 엠. 엘리크썬
칼-엑셀 루우넬, 벵트 겜스토오프
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Application filed by 테레포오낙티이에보라겟트 엘, 엠. 엘리크썬, 칼-엑셀 루우넬, 벵트 겜스토오프 filed Critical 테레포오낙티이에보라겟트 엘, 엠. 엘리크썬
Publication of KR840005636A publication Critical patent/KR840005636A/ko
Application granted granted Critical
Publication of KR870000076B1 publication Critical patent/KR870000076B1/ko
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/06—Current supply arrangements for telephone systems in which current supply sources at subordinate switching centres are charged from the main exchange
    • 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

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)
KR1019830002975A 1982-07-06 1983-06-30 전화교환국으로부터 가입자전화기에 전류를 공급하는 방법 Expired KR870000076B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8204185-6 1982-07-06
SE8204185A SE431704B (sv) 1982-07-06 1982-07-06 Forfarande vid strommatning av en abonnentapparat fran en telefonvexel

Publications (2)

Publication Number Publication Date
KR840005636A KR840005636A (ko) 1984-11-14
KR870000076B1 true KR870000076B1 (ko) 1987-02-09

Family

ID=20347308

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019830002975A Expired KR870000076B1 (ko) 1982-07-06 1983-06-30 전화교환국으로부터 가입자전화기에 전류를 공급하는 방법

Country Status (9)

Country Link
US (1) US4617426A (enExample)
EP (1) EP0113747B1 (enExample)
JP (1) JPS59501241A (enExample)
KR (1) KR870000076B1 (enExample)
AU (1) AU554907B2 (enExample)
DE (1) DE3366051D1 (enExample)
IT (1) IT1164296B (enExample)
SE (1) SE431704B (enExample)
WO (1) WO1984000459A1 (enExample)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0744286B2 (ja) * 1986-03-04 1995-05-15 三菱電機株式会社 非晶質光発電素子モジュールの製造方法
SE465799B (sv) * 1990-03-15 1991-10-28 Ericsson Telefon Ab L M Anordning foer reducerad effektmatning till en abonnentlinje
US5404771A (en) * 1993-05-25 1995-04-11 Soma; David N. Device for disposing the toe clips on bicycle pedals in upright operative positions when the toe clips are not engaged by the cyclists shoes
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
US5649009A (en) * 1994-11-14 1997-07-15 Harris Corporation Differential longitudinal amplifier for a subscriber line interface circuit
GB2315188B (en) * 1996-07-09 1999-04-14 Telspec Plc Power supply system for telephone line wires
US20030072436A1 (en) * 2001-10-15 2003-04-17 Eckhoff Christopher D. Subscriber line interface circuitry with modified DC feed
US7116778B2 (en) * 2002-09-30 2006-10-03 Silicon Laboratories, Inc. Adaptive linefeed control for varying load on a subscriber loop

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3916110A (en) * 1974-05-02 1975-10-28 Gte Automatic Electric Lab Inc Line circuit employing constant current devices for battery feed
US4315106A (en) * 1979-11-28 1982-02-09 International Telephone And Telegraph Corporation Apparatus for regulating current supplied to a telephone line signal of the type employed in digital telephone systems
GB2064915B (en) * 1979-11-29 1984-03-21 Standard Telephones Cables Ltd Telephone line feed circuit
JPS6022571B2 (ja) * 1979-12-05 1985-06-03 株式会社日立製作所 地絡保護方式
GB2065418B (en) * 1979-12-06 1984-02-15 Standard Telephones Cables Ltd Telephone line feed
JPS5737966A (en) * 1980-08-15 1982-03-02 Nec Corp Compensating system for unbalance to earth
US4317963A (en) * 1980-09-22 1982-03-02 International Telephone And Telegraph Corporation Subscriber line interface circuit utilizing impedance synthesizer and shared voltage source for loop current regulation control
SE452385B (sv) * 1981-02-17 1987-11-23 Western Electric Co Batterimatningskrets
US4419542A (en) * 1982-05-17 1983-12-06 Bell Telephone Laboratories, Incorporated Battery feed circuit

Also Published As

Publication number Publication date
SE8204185D0 (sv) 1982-07-06
AU1775983A (en) 1984-02-08
JPS59501241A (ja) 1984-07-12
DE3366051D1 (en) 1986-10-16
SE431704B (sv) 1984-02-20
IT8321935A0 (it) 1983-07-05
IT8321935A1 (it) 1985-01-05
AU554907B2 (en) 1986-09-04
JPH0462218B2 (enExample) 1992-10-05
IT1164296B (it) 1987-04-08
SE8204185L (sv) 1984-01-07
WO1984000459A1 (en) 1984-02-02
EP0113747A1 (en) 1984-07-25
EP0113747B1 (en) 1986-09-10
US4617426A (en) 1986-10-14
KR840005636A (ko) 1984-11-14

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KR870000076B1 (ko) 전화교환국으로부터 가입자전화기에 전류를 공급하는 방법
KR870000078B1 (ko) 교환국으로 부터 가입자 전화기에의 전류 공급장치
GB1489143A (en) Subscriber line interface circuit
CA1164592A (en) Telephone line feed
FR2254168A1 (en) Telephone line supply device - is an active electronic device acting as resistance for direct current and high impedance for A.C.
AU562139B2 (en) Method and apparatus in the current supply of a subscriber set from an exchange
KR900002524A (ko) 고장보호회로를 가진 양방향 dc 출력 제어기
FI81230B (fi) Kopplingsanordning foer elektrisk matning av anordningar i telefonapparat.
US4267408A (en) Arrangement for applying a signal to a transmission line
FI84306B (fi) Kopplingsanordning foer en elektronisk anslutningskrets.
FI59883C (fi) Stabiliseringsanordning foer likstroem
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SE437452B (sv) Dubbelriktad forsterkare anordnad att anslutas till en tvatradslinje
SU875363A1 (ru) Стабилизированный источник посто нного напр жени с защитой от перенапр жений в нагрузке
JPS55154866A (en) Current supply circuit for telephone switchboard
JPS5990455A (ja) サイレントレバ−ス制御回路
SE514163C2 (sv) Detektor för registrering av överledning
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JPS61224652A (ja) 無鳴動端末収容方式
JPS6317389B2 (enExample)
JPS624736B2 (enExample)

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