NL8006572A - Voedingsinrichting voor een telefoonlijn. - Google Patents

Voedingsinrichting voor een telefoonlijn. Download PDF

Info

Publication number
NL8006572A
NL8006572A NL8006572A NL8006572A NL8006572A NL 8006572 A NL8006572 A NL 8006572A NL 8006572 A NL8006572 A NL 8006572A NL 8006572 A NL8006572 A NL 8006572A NL 8006572 A NL8006572 A NL 8006572A
Authority
NL
Netherlands
Prior art keywords
line
voltage
output
operational amplifier
input
Prior art date
Application number
NL8006572A
Other languages
English (en)
Dutch (nl)
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.)
Filing date
Publication date
Application filed by Standard Telephones Cables Ltd filed Critical Standard Telephones Cables Ltd
Publication of NL8006572A publication Critical patent/NL8006572A/nl

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)
NL8006572A 1979-12-06 1980-12-03 Voedingsinrichting voor een telefoonlijn. NL8006572A (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7942104A GB2065418B (en) 1979-12-06 1979-12-06 Telephone line feed
GB7942104 1979-12-06

Publications (1)

Publication Number Publication Date
NL8006572A true NL8006572A (nl) 1981-07-01

Family

ID=10509653

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8006572A NL8006572A (nl) 1979-12-06 1980-12-03 Voedingsinrichting voor een telefoonlijn.

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
DE3264466D1 (en) * 1981-01-28 1985-08-08 Hitachi Ltd Current supply circuit
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
DE69120135T2 (de) * 1990-04-04 1997-01-23 Seiscor Tech Inc Schnittstellenschaltung für Teilnehmerleitung, die regulierten Strom liefert
US5103387A (en) * 1991-01-31 1992-04-07 Northern Telecom Limited High voltage converter
CA2097449C (fr) * 1992-06-05 1998-09-15 Satosi Sakuragi Circuit d'alimentation par ligne telephonique
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
JP2000513900A (ja) * 1997-04-29 2000-10-17 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 有線結合の電気通信装置及び給電回路
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

Also Published As

Publication number Publication date
SE8008417L (sv) 1981-06-07
EG14711A (en) 1985-03-31
PT72170A (en) 1981-01-01
GB2065418B (en) 1984-02-15
JPS56100562A (en) 1981-08-12
AU6501680A (en) 1981-06-11
IT8026509A0 (it) 1980-12-09
AU542803B2 (en) 1985-03-14
US4431869A (en) 1984-02-14
BE890403R (fr) 1982-01-18
IT1134634B (it) 1986-08-13
DE3043907A1 (de) 1981-06-11
FR2471709B1 (fr) 1984-12-28
FR2471709A1 (fr) 1981-06-19
PT72170B (en) 1982-01-05
NZ195746A (en) 1984-10-19
ZA807497B (en) 1981-11-25
GB2065418A (en) 1981-06-24

Similar Documents

Publication Publication Date Title
NL8006572A (nl) Voedingsinrichting voor een telefoonlijn.
USRE42532E1 (en) Synchronous-rectified DC to DC converter with improved current sensing
US7999524B2 (en) Interleaved power factor correction pre-regulator phase management circuitry
US7254000B1 (en) Over voltage protection scheme for synchronous buck converter
CN207083016U (zh) 用于输出电压控制的设备
JPH02190068A (ja) 電子呼び出し信号生成装置
JPH11355975A (ja) 電力供給用変換器モジュ―ル及びそれを含むシステム
US6094036A (en) Electrical power supply with low-loss inrush current limiter and step-up converter circuit
US3531712A (en) Current storage d-c voltage converter
JPH0713803B2 (ja) バッテリフィード集積回路
US4999524A (en) Solar array power simulator
US5166871A (en) Buck switching regulator with tow control loops
EP0957626B1 (fr) Commutateur de batterie pour un circuit d'interface de ligne d'abonne'
US6937095B2 (en) Efficient, switched linear signal driver
CN112714997A (zh) 在闭环系统中改善开关条件的方法和装置
CA1175899A (fr) Convertisseur continu-continu
JPH06169536A (ja) 無接点式エネルギー及びデータ伝送装置
JP3129811B2 (ja) Ｄｃ−ｄｃコンバータの過電流保護回路
KR860001038B1 (ko) 버블 메모리 유니트용 전원장치
JPS6070995A (ja) モ−タ制御装置
JPH10174435A (ja) Ｄｃ−ｄｃコンバータ
RU2052211C1 (ru) Стабилизатор постоянного тока
JPS60207294A (ja) 点灯装置
JPH01175453A (ja) 通信端末への電流供給回路
GB2230910A (en) Electrical switching circuit

Legal Events

Date Code Title Description
A85 Still pending on 85-01-01
BV The patent application has lapsed