ZA805950B - Sampling devices for d.c. circuits - Google Patents

Sampling devices for d.c. circuits

Info

Publication number
ZA805950B
ZA805950B ZA00805950A ZA805950A ZA805950B ZA 805950 B ZA805950 B ZA 805950B ZA 00805950 A ZA00805950 A ZA 00805950A ZA 805950 A ZA805950 A ZA 805950A ZA 805950 B ZA805950 B ZA 805950B
Authority
ZA
South Africa
Prior art keywords
selector
inputs
output
comparator
signal inputs
Prior art date
Application number
ZA00805950A
Other languages
English (en)
Inventor
R Lechner
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of ZA805950B publication Critical patent/ZA805950B/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/2272—Subscriber line supervision circuits, e.g. call detection circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Electronic Switches (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Color Television Systems (AREA)
ZA00805950A 1979-09-26 1980-09-25 Sampling devices for d.c. circuits ZA805950B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792938946 DE2938946A1 (de) 1979-09-26 1979-09-26 Schaltungsanordnung zur verhinderung der nachteiligen auswirkung von wechselspannungsanteilen bei der registrierung des schaltzustandes in einem insbesondere durch teilnehmeranschlussleitungen in fernsprechvermittlungsanlagen gebildeten schaltkreis

Publications (1)

Publication Number Publication Date
ZA805950B true ZA805950B (en) 1981-09-30

Family

ID=6081891

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00805950A ZA805950B (en) 1979-09-26 1980-09-25 Sampling devices for d.c. circuits

Country Status (6)

Country Link
US (1) US4336424A (fr)
EP (1) EP0026412B1 (fr)
JP (1) JPS5654161A (fr)
AT (1) ATE5119T1 (fr)
DE (2) DE2938946A1 (fr)
ZA (1) ZA805950B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3207318A1 (de) * 1982-03-01 1983-09-08 Siemens AG, 1000 Berlin und 8000 München Teilnehmeranschlussschaltung mit niederohmig ueberbrueckbaren speisewiderstaenden und einer unterschiedliche indikationen durchfuehrenden indikationsschaltung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL52905C (fr) * 1937-08-21
US2755340A (en) * 1951-01-22 1956-07-17 Nederlanden Staat Circuit reserving system
FR2286573A1 (fr) * 1974-09-24 1976-04-23 Constr Telephoniques Circuit d'exploration pour systeme de commutation
DE2542615A1 (de) * 1975-09-24 1977-04-07 Siemens Ag Schaltungsanordnung fuer fernmeldevermittlungsanlagen, insbesondere fernsprechvermittlungsanlagen, zur erkennung des anrufzustandes auf teilnehmerleitungen

Also Published As

Publication number Publication date
US4336424A (en) 1982-06-22
EP0026412A1 (fr) 1981-04-08
ATE5119T1 (de) 1983-11-15
JPS5654161A (en) 1981-05-14
EP0026412B1 (fr) 1983-10-19
DE3065378D1 (en) 1983-11-24
DE2938946A1 (de) 1981-04-09

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