ES8500693A1 - Un circuito de alimentacion para una carga variable, particularmente para un circuito de linea en sistemas telefonicos - Google Patents

Un circuito de alimentacion para una carga variable, particularmente para un circuito de linea en sistemas telefonicos

Info

Publication number
ES8500693A1
ES8500693A1 ES526415A ES526415A ES8500693A1 ES 8500693 A1 ES8500693 A1 ES 8500693A1 ES 526415 A ES526415 A ES 526415A ES 526415 A ES526415 A ES 526415A ES 8500693 A1 ES8500693 A1 ES 8500693A1
Authority
ES
Spain
Prior art keywords
circuit
supply
line
supply circuit
variable load
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
ES526415A
Other languages
English (en)
Other versions
ES526415A0 (es
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Spain SA
Original Assignee
Alcatel Espana SA
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 Alcatel Espana SA filed Critical Alcatel Espana SA
Publication of ES8500693A1 publication Critical patent/ES8500693A1/es
Publication of ES526415A0 publication Critical patent/ES526415A0/es
Granted legal-status Critical Current

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
    • H04M19/005—Feeding arrangements without the use of line transformers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)

Abstract

CIRCUITO DE ALIMENTACION PARA UNA CARGA VARIABLE, PARTICULARMENTE PARA UN CIRCUITO DE LINEA EN SISTEMAS TELEFONICOS.CARACTERIZADO PORQUE LAS TENSIONES LONGITUDINALES INDUCIDAS NO PASAN A TRAVES DEL CIRCUITO DE ALIMENTACION DE ELEVADA RESISTENCIA DINAMICA, SINO QUE SE DERIVAN A TIERRA POR LAS VIAS DE BAJA IMPEDANCIA EQUILIBRADAS; PORQUE LAS TENSIONES DE RADIO-FRECUENCIA INDUCIDAS NO PASAN POR EL CIRCUITO DE ALIMENTACION, SINO QUE SE DERIVAN A TIERRA; Y PORQUE LA TENSION LONGITUDINAL SOBREPUESTA A LA DE ALIMENTACION NO LLEVA A LA SATURACION A LOS TRANSISTORES DE ALIMENTACION.
ES526415A 1982-10-12 1983-10-11 Un circuito de alimentacion para una carga variable, particularmente para un circuito de linea en sistemas telefonicos Granted ES526415A0 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3237681A DE3237681C2 (de) 1982-10-12 1982-10-12 Speiseschaltung für einen veränderlichen Verbraucherwiderstand und mit unterschiedlich wirkendem Ausgangswiderstand

Publications (2)

Publication Number Publication Date
ES8500693A1 true ES8500693A1 (es) 1984-06-16
ES526415A0 ES526415A0 (es) 1984-06-16

Family

ID=6175475

Family Applications (1)

Application Number Title Priority Date Filing Date
ES526415A Granted ES526415A0 (es) 1982-10-12 1983-10-11 Un circuito de alimentacion para una carga variable, particularmente para un circuito de linea en sistemas telefonicos

Country Status (7)

Country Link
US (1) US4633038A (es)
JP (1) JPS5990456A (es)
DE (1) DE3237681C2 (es)
ES (1) ES526415A0 (es)
GR (1) GR79011B (es)
IT (1) IT1171746B (es)
MX (1) MX154026A (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4554412A (en) * 1984-07-23 1985-11-19 At&T Information Systems Inc. Resistive line circuit
DE3428106A1 (de) * 1984-07-30 1986-02-06 Standard Elektrik Lorenz Ag, 7000 Stuttgart Teilnehmeranschlussschaltung
DE3541548C1 (en) * 1985-11-25 1989-11-23 Ant Nachrichtentech Line unit for telephone/data transmission
DE3926102A1 (de) * 1989-08-08 1991-02-14 Standard Elektrik Lorenz Ag Verfahren und schaltungsanordnung zur uebertragung eines digitalen signals auf einer teilnehmerleitung in fernsprechanlagen
US5189697A (en) * 1990-04-30 1993-02-23 Northern Telecom Limited Line interface circuit
EP0517321B1 (en) * 1991-06-06 1999-10-06 Koninklijke Philips Electronics N.V. Telecommunication system comprising a supply circuit for a telecommunication line, and a supply circuit for a telecommunication line suitable for use in the telecommunication system

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2254167B2 (es) * 1973-12-10 1978-08-18 Labo Cent Telecommunicat
DE2521984C2 (de) * 1975-05-16 1983-05-26 Standard Elektrik Lorenz Ag, 7000 Stuttgart Schaltungsanordnung zum Speisen eines Gleichstromverbrauchers in zentralgespeisten Fernmeldeanlagen
FR2382810A1 (fr) * 1977-03-02 1978-09-29 Labo Cent Telecommunicat Circuit d'alimentation de ligne telephonique avec protection
US4087647A (en) * 1977-05-25 1978-05-02 Bell Telephone Laboratories, Incorporated Circuit for supplying direct current to telephone station sets
ZA784547B (en) * 1977-08-17 1979-08-29 Post Office Unbalanced/balanced converter circuits
FR2422300A1 (fr) * 1978-04-03 1979-11-02 Trt Telecom Radio Electr Joncteur comportant un amplificateur de puissance symetrique pour alimenter la ligne d'abonne
IT1159706B (it) * 1978-06-02 1987-03-04 Cselt Centro Studi Lab Telecom Circuito telefonico elettronico di linea d'utente
NL7807531A (nl) * 1978-07-13 1980-01-15 Philips Nv Inrichting voor het toevoeren van een signaal aan een transmissielijn.
DE2838038A1 (de) * 1978-08-31 1980-03-13 Siemens Ag Einspeiseeinheit mit hohem ausgangsseitigen innenwiderstand
CA1130940A (en) * 1978-09-22 1982-08-31 Oki Electric Industry Co., Ltd. Current supply circuit for telephone exchange
FR2460078B1 (fr) * 1979-06-25 1986-12-12 Trt Telecom Radio Electr Joncteur d'abonne electronique
DE3007549A1 (de) * 1980-02-28 1981-09-10 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Anordnung zur speisung einer teilnehmereinrichtung
DE3037972C2 (de) * 1980-10-08 1982-09-16 Standard Elektrik Lorenz Ag, 7000 Stuttgart Schaltungsanordnung zum Speisen eines veränderlichen Widerstandes über zwei veränderliche Speisewiderstände, insbesondere zum Speisen von Teilnehmeranschlußleitungen in Fernsprechvermittlungsanlagen
US4400588A (en) * 1981-06-15 1983-08-23 Gte Automatic Electric Labs Inc. Electronic voice network for a telephone subscriber's substation

Also Published As

Publication number Publication date
MX154026A (es) 1987-04-02
IT8323266A0 (it) 1983-10-12
JPS5990456A (ja) 1984-05-24
DE3237681C2 (de) 1986-03-27
ES526415A0 (es) 1984-06-16
IT1171746B (it) 1987-06-10
GR79011B (es) 1984-10-02
US4633038A (en) 1986-12-30
DE3237681A1 (de) 1984-04-12

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19970519