FR2268274A2 - Electromagnetic metal detector - has amplifier capacitor allowing metal movement to be detected only - Google Patents

Electromagnetic metal detector - has amplifier capacitor allowing metal movement to be detected only

Info

Publication number
FR2268274A2
FR2268274A2 FR7413630A FR7413630A FR2268274A2 FR 2268274 A2 FR2268274 A2 FR 2268274A2 FR 7413630 A FR7413630 A FR 7413630A FR 7413630 A FR7413630 A FR 7413630A FR 2268274 A2 FR2268274 A2 FR 2268274A2
Authority
FR
France
Prior art keywords
voltage
amplifier
detected
metal
electromagnetic
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
FR7413630A
Other languages
English (en)
French (fr)
Other versions
FR2268274B2 (enExample
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.)
ANCET VICTOR FR
Original Assignee
ANCET VICTOR FR
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 ANCET VICTOR FR filed Critical ANCET VICTOR FR
Priority to FR7413630A priority Critical patent/FR2268274A2/fr
Publication of FR2268274A2 publication Critical patent/FR2268274A2/fr
Application granted granted Critical
Publication of FR2268274B2 publication Critical patent/FR2268274B2/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
    • G01V3/10—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 using induction coils
    • G01V3/104—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 using induction coils using several coupled or uncoupled coils
    • G01V3/105—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 using induction coils using several coupled or uncoupled coils forming directly coupled primary and secondary coils or loops

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)
  • Geophysics And Detection Of Objects (AREA)
FR7413630A 1974-04-17 1974-04-17 Electromagnetic metal detector - has amplifier capacitor allowing metal movement to be detected only Granted FR2268274A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7413630A FR2268274A2 (en) 1974-04-17 1974-04-17 Electromagnetic metal detector - has amplifier capacitor allowing metal movement to be detected only

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7413630A FR2268274A2 (en) 1974-04-17 1974-04-17 Electromagnetic metal detector - has amplifier capacitor allowing metal movement to be detected only

Publications (2)

Publication Number Publication Date
FR2268274A2 true FR2268274A2 (en) 1975-11-14
FR2268274B2 FR2268274B2 (enExample) 1978-05-05

Family

ID=9137840

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7413630A Granted FR2268274A2 (en) 1974-04-17 1974-04-17 Electromagnetic metal detector - has amplifier capacitor allowing metal movement to be detected only

Country Status (1)

Country Link
FR (1) FR2268274A2 (enExample)

Also Published As

Publication number Publication date
FR2268274B2 (enExample) 1978-05-05

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