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)
French (fr)
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/xx

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)
  • Control Of Eletrric Generators (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Fire-Detection Mechanisms (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 (en:Method)
BR (1) BR7507715A (en:Method)
ES (1) ES445388A1 (en:Method)
FR (1) FR2301982A1 (en:Method)
GB (1) GB1478219A (en:Method)
IT (1) IT1055300B (en:Method)
NO (1) NO144404C (en:Method)

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

Similar Documents

Publication Publication Date Title
BE840276A (fr) Circuits et organes de telecommunication utilisant des dispositifs a effet hall
BE843838A (fr) Perfectionnements aux dispositifs de verrouillage
IT1065732B (it) Apparecchiatura per trattamento sotto vuoto
BE867034A (fr) Dispositifs electroniques
AR207823A1 (es) Un broche quirurgico
FR2312904A1 (fr) Perfectionnements aux systemes et aux dispositifs de teleconference par visiophonie
GB1543227A (en) Field effect transistor circuits
FR2325135A1 (fr) Generateur de sons de masquage
GB1543074A (en) Bistable field effect transistor devices
FR2334051A1 (fr) Dispositifs protecteurs de machines-outils
BR7608511A (pt) Dispositivo pulverizador
FR2312867A1 (fr) Perfectionnement aux dispositifs de connexion
SE7701965L (sv) Chelating agents and chelates
FR2301169A1 (fr) Perfectionnements apportes aux dispositifs de fixati
FR2316749A1 (fr) Dispositifs interferometres a jonctions de josephson
FR2333361A1 (fr) Perfectionnements aux dispositifs a contacts multiples
FR2334209A1 (fr) Perfectionnements aux dispositifs commutateurs a semi-conducteur
IT1066880B (it) Dispositivo di trattamento di un segnale campiomato
BE838697A (fr) Circuits et organes de telecommunication utilisant des dispositifs a effet hall
SE7606967L (sv) Halvledaromkopplingsanordning
BE838698R (fr) Circuits et organes de telecommunication utilisant des dispositifs a effet hall
FR2319199A1 (fr) Dispositifs a semi-conducteurs et cadres de montage
FR2315926A1 (fr) Agents antibacteriens
FR2330875A1 (fr) Perfectionnements apportes aux dispositifs d'allumage
FR2329006A1 (fr) Perfectionnements aux dispositifs temporisateurs