FR2459474A1 - Appareils detecteurs de metaux a dispositif d'equilibrage electronique, pour la recherche dans le bois et le corps des animaux, ou autres applications - Google Patents

Appareils detecteurs de metaux a dispositif d'equilibrage electronique, pour la recherche dans le bois et le corps des animaux, ou autres applications Download PDF

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Publication number
FR2459474A1
FR2459474A1 FR7916813A FR7916813A FR2459474A1 FR 2459474 A1 FR2459474 A1 FR 2459474A1 FR 7916813 A FR7916813 A FR 7916813A FR 7916813 A FR7916813 A FR 7916813A FR 2459474 A1 FR2459474 A1 FR 2459474A1
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France
Prior art keywords
balancing
animals
wood
oscillator
metal
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FR7916813A
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English (en)
French (fr)
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FR2459474B1 (enExample
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Priority to FR7916813A priority Critical patent/FR2459474A1/fr
Publication of FR2459474A1 publication Critical patent/FR2459474A1/fr
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Publication of FR2459474B1 publication Critical patent/FR2459474B1/fr
Granted legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08Electric 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
    • G01V3/10Electric 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 using induction coils
    • G01V3/104Electric 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 using induction coils using several coupled or uncoupled coils
    • G01V3/105Electric 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 using induction coils using several coupled or uncoupled coils forming directly coupled primary and secondary coils or loops
    • G01V3/107Electric 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 using induction coils using several coupled or uncoupled coils forming directly coupled primary and secondary coils or loops using compensating coil or loop arrangements

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  • 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)
  • Measurement Of Current Or Voltage (AREA)
FR7916813A 1979-06-19 1979-06-19 Appareils detecteurs de metaux a dispositif d'equilibrage electronique, pour la recherche dans le bois et le corps des animaux, ou autres applications Granted FR2459474A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7916813A FR2459474A1 (fr) 1979-06-19 1979-06-19 Appareils detecteurs de metaux a dispositif d'equilibrage electronique, pour la recherche dans le bois et le corps des animaux, ou autres applications

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7916813A FR2459474A1 (fr) 1979-06-19 1979-06-19 Appareils detecteurs de metaux a dispositif d'equilibrage electronique, pour la recherche dans le bois et le corps des animaux, ou autres applications

Publications (2)

Publication Number Publication Date
FR2459474A1 true FR2459474A1 (fr) 1981-01-09
FR2459474B1 FR2459474B1 (enExample) 1984-06-01

Family

ID=9227262

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7916813A Granted FR2459474A1 (fr) 1979-06-19 1979-06-19 Appareils detecteurs de metaux a dispositif d'equilibrage electronique, pour la recherche dans le bois et le corps des animaux, ou autres applications

Country Status (1)

Country Link
FR (1) FR2459474A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2505167A1 (fr) * 1981-05-07 1982-11-12 Mac Cormick Lab Inc Circuit et procede de determination de la position d'un dispositif dans un tissu biologique

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2575447A (en) * 1947-10-04 1951-11-20 Rca Corp Fail-safe feature for balanced bridge indicators
US2711510A (en) * 1950-06-21 1955-06-21 Rca Corp Metal detector balance controls
US3758849A (en) * 1972-03-31 1973-09-11 Sperry Rand Corp Metal detector system having identical balanced field coil system on opposite sides of a detection zone

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2575447A (en) * 1947-10-04 1951-11-20 Rca Corp Fail-safe feature for balanced bridge indicators
US2711510A (en) * 1950-06-21 1955-06-21 Rca Corp Metal detector balance controls
US3758849A (en) * 1972-03-31 1973-09-11 Sperry Rand Corp Metal detector system having identical balanced field coil system on opposite sides of a detection zone

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2505167A1 (fr) * 1981-05-07 1982-11-12 Mac Cormick Lab Inc Circuit et procede de determination de la position d'un dispositif dans un tissu biologique

Also Published As

Publication number Publication date
FR2459474B1 (enExample) 1984-06-01

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