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BE838697A - Circuits et organes de telecommunication utilisant des dispositifs a effet hall - Google Patents

Circuits et organes de telecommunication utilisant des dispositifs a effet hall

Info

Publication number
BE838697A
BE838697A BE2054835A BE2054835A BE838697A BE 838697 A BE838697 A BE 838697A BE 2054835 A BE2054835 A BE 2054835A BE 2054835 A BE2054835 A BE 2054835A BE 838697 A BE838697 A BE 838697A
Authority
BE
Belgium
Prior art keywords
organs
hall effect
effect devices
telecommunication circuits
telecommunication
Prior art date
Application number
BE2054835A
Other languages
English (en)
Inventor
R Kitajewski
A W Sweet
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 filed Critical
Publication of BE838697A publication Critical patent/BE838697A/fr

Links

Classifications

    • 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)
  • Signal Processing (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Control Of Eletrric Generators (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
BE2054835A 1975-02-20 1976-02-19 Circuits et organes de telecommunication utilisant des dispositifs a effet hall BE838697A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB715875A GB1478219A (en) 1975-02-20 1975-02-20 Telecommunication exchange circuits

Publications (1)

Publication Number Publication Date
BE838697A true BE838697A (fr) 1976-08-19

Family

ID=9827726

Family Applications (1)

Application Number Title Priority Date Filing Date
BE2054835A BE838697A (fr) 1975-02-20 1976-02-19 Circuits et organes de telecommunication utilisant des dispositifs a effet hall

Country Status (7)

Country Link
BE (1) BE838697A (fr)
BR (1) BR7507715A (fr)
ES (1) ES445388A1 (fr)
FR (1) FR2301982A1 (fr)
GB (1) GB1478219A (fr)
IT (1) IT1055300B (fr)
NO (1) NO144404C (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2013000A (en) * 1978-01-20 1979-08-01 Hitachi Ltd Dc D.C. magnetic field cancellation circuit
GB2146872B (en) * 1983-09-15 1986-11-05 Stc Plc Hall effect module for loop detector
US5333192A (en) * 1990-06-26 1994-07-26 Northern Telecom Limited Line interface circuit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1158584B (de) * 1962-08-16 1963-12-05 Telefunken Patent Schaltungsanordnung zur Pruefung des Anruf- und Belegungszustandes der Teilnehmerleitungen in Fernmelde-, insbesondere Fernsprechvermittlungsanlagen mit Hilfe von Hall-Generatoren
US3848094A (en) * 1972-12-29 1974-11-12 Stromberg Carlson Corp Telephone battery feed circuit

Also Published As

Publication number Publication date
NO760488L (fr) 1976-09-01
ES445388A1 (es) 1977-06-16
IT1055300B (it) 1981-12-21
GB1478219A (en) 1977-06-29
NO144404C (no) 1981-08-19
FR2301982A1 (fr) 1976-09-17
BR7507715A (pt) 1976-08-24
NO144404B (no) 1981-05-11

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