ES547883A0 - Una configuracion de un circuito de alimentacion de tension dual para linea telefonica - Google Patents

Una configuracion de un circuito de alimentacion de tension dual para linea telefonica

Info

Publication number
ES547883A0
ES547883A0 ES547883A ES547883A ES547883A0 ES 547883 A0 ES547883 A0 ES 547883A0 ES 547883 A ES547883 A ES 547883A ES 547883 A ES547883 A ES 547883A ES 547883 A0 ES547883 A0 ES 547883A0
Authority
ES
Spain
Prior art keywords
line
telephone line
configuration
supply circuit
voltage supply
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.)
Granted
Application number
ES547883A
Other languages
English (en)
Other versions
ES8704058A1 (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 ES8704058A1 publication Critical patent/ES8704058A1/es
Publication of ES547883A0 publication Critical patent/ES547883A0/es
Expired 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
    • H04M19/008—Using DC/DC converters

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Telephone Function (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
ES547883A 1984-10-15 1985-10-15 Una configuracion de un circuito de alimentacion de tension dual para linea telefonica Expired ES8704058A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/660,585 US4602130A (en) 1984-10-15 1984-10-15 Dual voltage source feed circuit configuration for a telephone line circuit

Publications (2)

Publication Number Publication Date
ES8704058A1 ES8704058A1 (es) 1987-02-16
ES547883A0 true ES547883A0 (es) 1987-02-16

Family

ID=24650127

Family Applications (1)

Application Number Title Priority Date Filing Date
ES547883A Expired ES8704058A1 (es) 1984-10-15 1985-10-15 Una configuracion de un circuito de alimentacion de tension dual para linea telefonica

Country Status (6)

Country Link
US (1) US4602130A (es)
EP (1) EP0178992B1 (es)
JP (1) JPS6196861A (es)
AT (1) ATE47946T1 (es)
AU (1) AU584125B2 (es)
ES (1) ES8704058A1 (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4761812A (en) * 1985-12-10 1988-08-02 U.S. Holding Company, Inc. Constant power telephone line circuit
SE9300941L (sv) * 1993-03-22 1994-09-23 Rosengren Teknik Ab Anordning för sammankoppling av två apparater försedda med telelinjeanslutning
US5659610A (en) * 1994-09-28 1997-08-19 Lucent Technologies Inc. Battery feed circuit
US6157716A (en) * 1998-05-08 2000-12-05 Bell Atlantic Corporation Power feed circuit providing both on-hook and off-hook power for telephone subscriber loop

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4142075A (en) * 1977-10-11 1979-02-27 Burr-Brown Research Corporation Interface circuit and method for telephone extension lines
NL7807531A (nl) * 1978-07-13 1980-01-15 Philips Nv Inrichting voor het toevoeren van een signaal aan een transmissielijn.
US4254305A (en) * 1979-02-07 1981-03-03 International Telephone And Telegraph Corporation Current limited subscriber line feed circuit
NL7903662A (nl) * 1979-05-10 1980-11-12 Philips Nv Lijncircuit.
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
GB2065418B (en) * 1979-12-06 1984-02-15 Standard Telephones Cables Ltd Telephone line feed
US4387273A (en) * 1980-08-25 1983-06-07 International Telephone And Telegraph Corporation Subscriber line interface circuit with impedance synthesizer
DE3264466D1 (en) * 1981-01-28 1985-08-08 Hitachi Ltd Current supply circuit
CA1157175A (en) * 1981-02-20 1983-11-15 Mitel Corporation Power saving line circuit
JPS5883492A (ja) * 1981-11-12 1983-05-19 Nec Corp 加入者回路の低電力化方式
US4514595A (en) * 1982-06-10 1985-04-30 Northern Telecom Limited Active impedance line feed circuit
US4511763A (en) * 1982-11-01 1985-04-16 Gte Communication Systems Corporation Floating dc current source for a subscriber loop circuit
US4499532A (en) * 1983-03-23 1985-02-12 At&T Bell Laboratories Floating battery feed circuit

Also Published As

Publication number Publication date
AU4823485A (en) 1986-04-24
US4602130A (en) 1986-07-22
ES8704058A1 (es) 1987-02-16
EP0178992A3 (en) 1987-02-25
EP0178992B1 (en) 1989-11-08
AU584125B2 (en) 1989-05-18
JPS6196861A (ja) 1986-05-15
EP0178992A2 (en) 1986-04-23
ATE47946T1 (de) 1989-11-15

Similar Documents

Publication Publication Date Title
RO83385B (ro) Circuit de alimentare a liniei de abonat cu alimentare de curent
TW357477B (en) A low-drop-out voltage regulator with PMOS pass element
AU574484B2 (en) Power supply circuit of switching regulator type
AU560755B2 (en) Switching regulator power supply
AU567166B2 (en) High voltage power supply
GB2096803B (en) Reference voltage circuit for supply voltage sense amplifier
AU5085379A (en) Power supply circuit for a line fed loud speaking telephone
DE3168995D1 (en) Switching regulator type power supply circuit
IT1135449B (it) Alimentazione per linea telefonica
ES467492A1 (es) Un circuito para alimentar una linea telefonica que incluye un dispositivo de proteccion.
ES547883A0 (es) Una configuracion de un circuito de alimentacion de tension dual para linea telefonica
IT1216909B (it) Regolatore di tensione cosiddetto switching per un circuito di interfaccia di una linea telefonica di utente.
JO1144B1 (en) A system for controlling the operation of contactors with switches
SU1090083A1 (ru) Электронно-гидромеханическая система регулирования подачей топлива
AU535131B2 (en) Telephone constant current line feed circuit
AU560001B2 (en) Battery feed circuit for subscriber line
DE3275491D1 (en) Band gap voltage regulator circuit
DE3584424D1 (de) Geregelte hochspannungsversorgung.
DE3065750D1 (en) Regulated voltage current supply circuits
DE3366391D1 (en) Improved power supply circuit of switching regulator type
HUT45789A (en) Switching arrangement
GB2091958B (en) Circuit arrangement for controlling the switch-on of supply voltage
GB2050115B (en) Telephone line circuit current supply arrangements
JPS56159716A (en) Direct-current electric power device
EP0589204A3 (en) Improvement of a voltage stabilized current supply circuit for an amplification converter.