FR2287029A1 - Detecteur d'objets ferromagnetiques - Google Patents

Detecteur d'objets ferromagnetiques

Info

Publication number
FR2287029A1
FR2287029A1 FR7433157A FR7433157A FR2287029A1 FR 2287029 A1 FR2287029 A1 FR 2287029A1 FR 7433157 A FR7433157 A FR 7433157A FR 7433157 A FR7433157 A FR 7433157A FR 2287029 A1 FR2287029 A1 FR 2287029A1
Authority
FR
France
Prior art keywords
transistor
magnetic field
detector
ferromagnetic objects
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.)
Granted
Application number
FR7433157A
Other languages
English (en)
French (fr)
Other versions
FR2287029B1 (OSRAM
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7433157A priority Critical patent/FR2287029A1/fr
Publication of FR2287029A1 publication Critical patent/FR2287029A1/fr
Application granted granted Critical
Publication of FR2287029B1 publication Critical patent/FR2287029B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electromagnetism (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Measurement Of Current Or Voltage (AREA)
FR7433157A 1974-10-02 1974-10-02 Detecteur d'objets ferromagnetiques Granted FR2287029A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7433157A FR2287029A1 (fr) 1974-10-02 1974-10-02 Detecteur d'objets ferromagnetiques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7433157A FR2287029A1 (fr) 1974-10-02 1974-10-02 Detecteur d'objets ferromagnetiques

Publications (2)

Publication Number Publication Date
FR2287029A1 true FR2287029A1 (fr) 1976-04-30
FR2287029B1 FR2287029B1 (OSRAM) 1978-11-03

Family

ID=9143668

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7433157A Granted FR2287029A1 (fr) 1974-10-02 1974-10-02 Detecteur d'objets ferromagnetiques

Country Status (1)

Country Link
FR (1) FR2287029A1 (OSRAM)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE961367C (de) * 1954-06-16 1957-04-04 Electroacustic Ges M B H Vorrichtung zum Feststellen und Anzeigen von magnetischen oder magnetisierbaren Koerpern aus hochpermeablem Material nach dem Induktionsverfahren
FR1398878A (fr) * 1964-04-02 1965-05-14 Westinghouse Freins & Signaux Capteur de proximité applicable notamment à la détection de masses métalliques

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE961367C (de) * 1954-06-16 1957-04-04 Electroacustic Ges M B H Vorrichtung zum Feststellen und Anzeigen von magnetischen oder magnetisierbaren Koerpern aus hochpermeablem Material nach dem Induktionsverfahren
FR1398878A (fr) * 1964-04-02 1965-05-14 Westinghouse Freins & Signaux Capteur de proximité applicable notamment à la détection de masses métalliques

Also Published As

Publication number Publication date
FR2287029B1 (OSRAM) 1978-11-03

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Legal Events

Date Code Title Description
ST Notification of lapse