SE8602889L - Sett och anordning att strommata en telefonlinje for att vid begrensad batterispenning kunna overfora en odistorderad talsignal - Google Patents

Sett och anordning att strommata en telefonlinje for att vid begrensad batterispenning kunna overfora en odistorderad talsignal

Info

Publication number
SE8602889L
SE8602889L SE8602889A SE8602889A SE8602889L SE 8602889 L SE8602889 L SE 8602889L SE 8602889 A SE8602889 A SE 8602889A SE 8602889 A SE8602889 A SE 8602889A SE 8602889 L SE8602889 L SE 8602889L
Authority
SE
Sweden
Prior art keywords
current
difference
line
pct
voltage
Prior art date
Application number
SE8602889A
Other languages
English (en)
Other versions
SE453626B (sv
SE8602889D0 (sv
Inventor
H Johansson
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
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to SE8602889A priority Critical patent/SE453626B/sv
Publication of SE8602889D0 publication Critical patent/SE8602889D0/sv
Priority to EP87904004A priority patent/EP0269714B1/en
Priority to US07/158,271 priority patent/US4853959A/en
Priority to KR1019880700207A priority patent/KR930002588B1/ko
Priority to DE8787904004T priority patent/DE3774403D1/de
Priority to JP62503601A priority patent/JP2771980B2/ja
Priority to PCT/SE1987/000262 priority patent/WO1988000420A1/en
Publication of SE8602889L publication Critical patent/SE8602889L/sv
Publication of SE453626B publication Critical patent/SE453626B/sv

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)
SE8602889A 1986-06-27 1986-06-27 Sett och anordning att strommata en telefonlinje for att vid begrensad batterispenning kunna overfora en odistorderad talsignal SE453626B (sv)

Priority Applications (7)

Application Number Priority Date Filing Date Title
SE8602889A SE453626B (sv) 1986-06-27 1986-06-27 Sett och anordning att strommata en telefonlinje for att vid begrensad batterispenning kunna overfora en odistorderad talsignal
EP87904004A EP0269714B1 (en) 1986-06-27 1987-05-26 Method and apparatus for feeding power to a telephone line
US07/158,271 US4853959A (en) 1986-06-27 1987-05-26 Method and apparatus for feeding power to a telephone line such that for restricted battery voltage there is enabled the transmission of an undistorted speech signal
KR1019880700207A KR930002588B1 (ko) 1986-06-27 1987-05-26 제한된 전지전압에서 왜곡이 없는 음성신호의 전송이 가능하도록 전화선에 전력을 공급하는 방법 및 장치
DE8787904004T DE3774403D1 (de) 1986-06-27 1987-05-26 Verfahren und geraet zur speisung einer fernsprechleitung.
JP62503601A JP2771980B2 (ja) 1986-06-27 1987-05-26 ひずみのない音声信号を所定電池電圧で伝送するために、電話線に電力を供給する装置および方法
PCT/SE1987/000262 WO1988000420A1 (en) 1986-06-27 1987-05-26 Method and apparatus for feeding power to a telephone line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8602889A SE453626B (sv) 1986-06-27 1986-06-27 Sett och anordning att strommata en telefonlinje for att vid begrensad batterispenning kunna overfora en odistorderad talsignal

Publications (3)

Publication Number Publication Date
SE8602889D0 SE8602889D0 (sv) 1986-06-27
SE8602889L true SE8602889L (sv) 1987-12-28
SE453626B SE453626B (sv) 1988-02-15

Family

ID=20364962

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8602889A SE453626B (sv) 1986-06-27 1986-06-27 Sett och anordning att strommata en telefonlinje for att vid begrensad batterispenning kunna overfora en odistorderad talsignal

Country Status (7)

Country Link
US (1) US4853959A (sv)
EP (1) EP0269714B1 (sv)
JP (1) JP2771980B2 (sv)
KR (1) KR930002588B1 (sv)
DE (1) DE3774403D1 (sv)
SE (1) SE453626B (sv)
WO (1) WO1988000420A1 (sv)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
SE511963C2 (sv) * 1997-04-23 1999-12-20 Ericsson Telefon Ab L M Anordning och förfarande för bestämning av linjespänning i en abonnentlinjekrets
SE509626C2 (sv) * 1997-06-06 1999-02-15 Ericsson Telefon Ab L M Förfarande för att reglera signalutrymmet i en abonnentlinjekrets jämte abonnentlinjekrets
WO1999026111A1 (en) 1997-11-14 1999-05-27 Foto-Wear, Inc. Imaging transfer system
FI104934B (sv) * 1997-11-18 2000-04-28 Nokia Networks Oy Abonnentlinjekrets
FI104933B (sv) * 1997-11-18 2000-04-28 Nokia Networks Oy Abonnentlinjekrets
FI104935B (sv) * 1997-11-18 2000-04-28 Nokia Networks Oy Abonnentlinjekrets
US9596362B1 (en) * 2015-05-28 2017-03-14 Cottonwood Creek Technologies, Inc. Automated determination of power transmission resistance

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4476350A (en) * 1981-02-17 1984-10-09 Bell Telephone Laboratories, Incorporated Battery feed circuit
US4431874A (en) * 1981-09-24 1984-02-14 Motorola, Inc. Balanced current multiplier circuit for a subscriber loop interface circuit
SE433285B (sv) * 1982-09-22 1984-05-14 Ericsson Telefon Ab L M Anordning for strommatning av en abonnentapparat
US4727574A (en) * 1985-09-24 1988-02-23 Northern Telecom Limited Subscriber line interface circuit with improved d.c. balance

Also Published As

Publication number Publication date
EP0269714B1 (en) 1991-11-06
JPS63503587A (ja) 1988-12-22
JP2771980B2 (ja) 1998-07-02
WO1988000420A1 (en) 1988-01-14
US4853959A (en) 1989-08-01
DE3774403D1 (de) 1991-12-12
KR880701509A (ko) 1988-07-27
SE453626B (sv) 1988-02-15
EP0269714A1 (en) 1988-06-08
SE8602889D0 (sv) 1986-06-27
KR930002588B1 (ko) 1993-04-03

Similar Documents

Publication Publication Date Title
TW332290B (en) Semiconductor integrated circuit
NO942674L (no) Feilreagerende veksel-forsterker og forbikoplersystem for kommunikasjonsforsterker
SE0001702D0 (sv) Optisk mottagare
DE59008542D1 (de) Hörgeräteschaltung mit einer Endstufe mit einer Begrenzungseinrichtung.
SE8602889D0 (sv) Sett och anordning att strommata en telefonlinje for att vid begrensad batterispenning kunna overfora en odistorderad talsignal
TW350171B (en) Amplification circuit and the apparatus
EP0367707A3 (en) A circuit arrangement for adjusting offset voltages associates with operational amplifiers
ATE156948T1 (de) Halbleiterrelais
DE3260920D1 (en) Sliding class a broadband linear amplifier with low power consumption, and circuit comprising at least one such amplifier
SE8602080L (sv) Anordning i ett telekommunikationssystem for att strommata en telefonapparat
SE9604101L (sv) Anordning för att skydda sluttransistorerna i en effektförstärkare
EP0346020A3 (en) Drive amplifier circuit
GB2230672A (en) A switchable dc power supply with increased efficiency for use in large wattage amplifiers
SE9604104L (sv) Anordning för att stabilisera ett slutsteg jämte slutsteg
CA2053382A1 (en) Voltage booster
JPS5531302A (en) Btl-system amplifier device
JPS54156143A (en) Power source system
SE9101459L (sv) Limiterande foerstaerkare
JPS6486747A (en) Door phone circuit
SE8006004L (sv) Elektronisk telefonkrets
DE3278963D1 (en) Amplifier suitable for low supply voltage operation
JPS5794819A (en) Current control system of constant voltage circuit
SE8605276D0 (sv) Anordning vid en hogtalareforsedd telefonapparat for att effektforsorja en till hogtalaren ansluten hogtalareforsterkare
JPS5717207A (en) Amplifying circuit
KR850001566B1 (en) Biasing circuit for power amplifier

Legal Events

Date Code Title Description
NAL Patent in force

Ref document number: 8602889-1

Format of ref document f/p: F

NUG Patent has lapsed
NUG Patent has lapsed