BE868519A - Alimentation pour un circuit de ligne - Google Patents

Alimentation pour un circuit de ligne

Info

Publication number
BE868519A
BE868519A BE188893A BE188893A BE868519A BE 868519 A BE868519 A BE 868519A BE 188893 A BE188893 A BE 188893A BE 188893 A BE188893 A BE 188893A BE 868519 A BE868519 A BE 868519A
Authority
BE
Belgium
Prior art keywords
power supply
line circuit
circuit
line
supply
Prior art date
Application number
BE188893A
Other languages
English (en)
French (fr)
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of BE868519A publication Critical patent/BE868519A/xx

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)
BE188893A 1978-03-06 1978-06-27 Alimentation pour un circuit de ligne BE868519A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7802423A NL7802423A (nl) 1978-03-06 1978-03-06 Voedingsinrichting voor een lijnstroomloop.

Publications (1)

Publication Number Publication Date
BE868519A true BE868519A (fr) 1978-12-27

Family

ID=19830442

Family Applications (1)

Application Number Title Priority Date Filing Date
BE188893A BE868519A (fr) 1978-03-06 1978-06-27 Alimentation pour un circuit de ligne

Country Status (10)

Country Link
US (1) US4192975A (xx)
JP (1) JPS5945316B2 (xx)
AU (1) AU512886B2 (xx)
BE (1) BE868519A (xx)
CA (1) CA1109171A (xx)
DE (1) DE2826762C2 (xx)
FR (1) FR2419627B1 (xx)
GB (1) GB1557149A (xx)
NL (1) NL7802423A (xx)
SE (1) SE436314B (xx)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7802422A (nl) * 1978-03-06 1979-09-10 Philips Nv Inrichting voor het meten van de lijnconditie van een abonneelijnstroomloop met behulp van een meetweerstand.
WO1981000658A1 (en) * 1979-08-31 1981-03-05 Electro Med Eng Pty Ltd Telephone line data isolator
GB2064268B (en) * 1979-09-17 1983-10-26 Philips Nv Electronic signalling device for connection to a signal transmission line
GB2065418B (en) * 1979-12-06 1984-02-15 Standard Telephones Cables Ltd Telephone line feed
US4354062A (en) * 1980-01-31 1982-10-12 Bell Telephone Laboratories, Incorporated Communication system signaling circuit
NL8000859A (nl) * 1980-02-12 1981-09-01 Philips Nv Inrichting voor het toevoeren van een wekspanning aan een abonneelijn.
GB2071461B (en) * 1980-02-14 1984-01-25 Standard Telephones Cables Ltd Telephone line feed
SE426761B (sv) * 1980-12-09 1983-02-07 Ellemtel Utvecklings Ab Pulsbreddsmodulerad spenningsomvandlare for omvandling av en likspenning till en lagfrekvent och foretredesvis sinusformad vexelspenning
SE455978B (sv) * 1980-12-19 1988-08-22 Ellemtel Utvecklings Ab Pulsbreddsmodulerad effektforsterkare for att i beroende av en styrande insignal omvandla en likspenning till en lagfrekvent utsignal
AT384337B (de) * 1982-07-22 1987-10-27 Alcatel Austria Ag Schnittstellenschaltung mit zweidraht-vierdraht- umsetzung fuer fernsprechvermittlungsanlagen
JPS61120558A (ja) * 1984-11-15 1986-06-07 Nitsuko Ltd 呼出し信号送出回路
JPS61179647A (ja) * 1984-12-29 1986-08-12 Fujitsu Ltd サ−ビス表示用ランプの点灯方法
CA1272318A (en) * 1986-10-20 1990-07-31 Kenji Takato Integrated ringing circuit and a ring trip circuit for the same
AT408935B (de) * 1993-08-02 2002-04-25 Schrack Telecom Ag Vorfeldeinrichtung
US5960075A (en) * 1995-02-16 1999-09-28 Northern Telecom Limited Switchmode power converters for telephone subscriber line interface circuits
GB2358989B (en) * 2000-02-03 2004-01-21 Lake Electronic Tech A circuit for developing an ac ringing voltage from a dc voltage supply

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3376494A (en) * 1965-05-20 1968-04-02 Power Conversion Inc High frequency controlled rectifier circuit
BE756517A (fr) * 1969-09-23 1971-03-01 Ericsson Telefon Ab L M Interrupteur pour signaux d'appel de centraux telephoniques automatiques
DE2347696C3 (de) * 1973-09-21 1978-12-21 Siemens Ag, 1000 Berlin Und 8000 Muenchen Schaltungsanordnung zum Speisen von Teilnehmeranschlußleitungen in Fernsprechvermittlungsanlagen
CA1013080A (en) * 1973-11-13 1977-06-28 Gte Automatic Electric Laboratories Incorporated Communication system interface circuits
JPS553906B2 (xx) * 1974-07-15 1980-01-28
FR2371840A1 (fr) * 1976-10-04 1978-06-16 Ibm France Circuit d'interface

Also Published As

Publication number Publication date
JPS5945316B2 (ja) 1984-11-05
DE2826762A1 (de) 1979-09-13
CA1109171A (en) 1981-09-15
SE436314B (sv) 1984-11-26
US4192975A (en) 1980-03-11
SE7807289L (sv) 1979-09-07
AU3672778A (en) 1979-12-06
DE2826762C2 (de) 1982-09-30
AU512886B2 (en) 1980-10-30
JPS54118715A (en) 1979-09-14
NL7802423A (nl) 1979-09-10
FR2419627A1 (fr) 1979-10-05
GB1557149A (en) 1979-12-05
FR2419627B1 (fr) 1986-06-20

Similar Documents

Publication Publication Date Title
BE868519A (fr) Alimentation pour un circuit de ligne
GB2028039B (en) Linearsing circuit for a pulse modulator
DE2965267D1 (en) Laser flashtube power supply
GB2013995A (en) Power supply
FR2284976A1 (fr) Moyen d'alimentation electrique de puissance pour un magnetron
GB2026921B (en) Power supply
JPS54156529A (en) Camera power supply circuit
JPS54134471A (en) Effective value supply circuit
JPS5532325A (en) Power supply for electronic range
YU189579A (en) Circuit for stopping turbines
JPS5381233A (en) Driving power supply circuit for camera
GB2025165B (en) Switching type power supply circuits
GB2017359B (en) Electronic timepiece power supply arrangement
JPS5558743A (en) Power supply device
GB2105929B (en) Start-up circuit for a power supply
GB2026738B (en) Power supply regulation circuit
GB2036878B (en) Power supply apparatus
GB2015276B (en) Shutdown circuit for a switching power supply
JPS5566273A (en) Interruption power supply
GB2035628B (en) Power supply
DE2963080D1 (en) Regulated power supply circuits
GB2023330B (en) Laser flashtube power supply
JPS54151444A (en) Power supply control circuit for camera
DE3173263D1 (en) Supply circuit comprising a pre-ionisation circuit for a flash-lamp
JPS54158644A (en) Dc power supply circuit

Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: N.V. PHILIPS' GLOEILAMPENFABRIEKEN

Effective date: 19920630