ES456750A1 - Un circuito para la deteccion de la inversion de la tension de alimentacion en una linea de transmision. - Google Patents

Un circuito para la deteccion de la inversion de la tension de alimentacion en una linea de transmision.

Info

Publication number
ES456750A1
ES456750A1 ES456750A ES456750A ES456750A1 ES 456750 A1 ES456750 A1 ES 456750A1 ES 456750 A ES456750 A ES 456750A ES 456750 A ES456750 A ES 456750A ES 456750 A1 ES456750 A1 ES 456750A1
Authority
ES
Spain
Prior art keywords
signals
memory
employed
circuit
detection circuit
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
ES456750A
Other languages
English (en)
Spanish (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 ES456750A1 publication Critical patent/ES456750A1/es
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/34—Charging, billing or metering arrangements for private branch exchanges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/38—Signalling arrangements; Manipulation of signalling currents using combinations of direct currents of different amplitudes or polarities over line conductors or combination of line conductors

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Meter Arrangements (AREA)
ES456750A 1976-03-12 1977-03-11 Un circuito para la deteccion de la inversion de la tension de alimentacion en una linea de transmision. Expired ES456750A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7607100A FR2344193A1 (fr) 1976-03-12 1976-03-12 Circuit de detection de l'inversion d'alimentation d'une ligne de transmission

Publications (1)

Publication Number Publication Date
ES456750A1 true ES456750A1 (es) 1978-01-16

Family

ID=9170321

Family Applications (1)

Application Number Title Priority Date Filing Date
ES456750A Expired ES456750A1 (es) 1976-03-12 1977-03-11 Un circuito para la deteccion de la inversion de la tension de alimentacion en una linea de transmision.

Country Status (2)

Country Link
ES (1) ES456750A1 (enrdf_load_stackoverflow)
FR (1) FR2344193A1 (enrdf_load_stackoverflow)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1414459A (en) * 1972-01-12 1975-11-19 Standard Telephones Cables Ltd Electronic relay
US3898389A (en) * 1972-10-18 1975-08-05 Communic Mfg Voltage and/or current-sensitive loop extender
FR2234716A1 (en) * 1973-06-19 1975-01-17 Telephones Cie Polarity inversion sensor - uses photo-coupled transistor-diodes and is applicable to telephone lines

Also Published As

Publication number Publication date
FR2344193A1 (fr) 1977-10-07
FR2344193B1 (enrdf_load_stackoverflow) 1980-04-18

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19991115