FR2292242B1 - - Google Patents

Info

Publication number
FR2292242B1
FR2292242B1 FR7535599A FR7535599A FR2292242B1 FR 2292242 B1 FR2292242 B1 FR 2292242B1 FR 7535599 A FR7535599 A FR 7535599A FR 7535599 A FR7535599 A FR 7535599A FR 2292242 B1 FR2292242 B1 FR 2292242B1
Authority
FR
France
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.)
Expired
Application number
FR7535599A
Other languages
French (fr)
Other versions
FR2292242A1 (en
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.)
Schneider Electric USA Inc
Original Assignee
Square D Co
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 Square D Co filed Critical Square D Co
Publication of FR2292242A1 publication Critical patent/FR2292242A1/en
Application granted granted Critical
Publication of FR2292242B1 publication Critical patent/FR2292242B1/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
    • G01V3/101—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 by measuring the impedance of the search coil; by measuring features of a resonant circuit comprising the search coil
    • G01V3/102—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 by measuring the impedance of the search coil; by measuring features of a resonant circuit comprising the search coil by measuring amplitude
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/945—Proximity switches
    • H03K17/95—Proximity switches using a magnetic detector
    • H03K17/951—Measures for supplying operating voltage to the detector circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/945—Proximity switches
    • H03K17/95—Proximity switches using a magnetic detector
    • H03K17/952—Proximity switches using a magnetic detector using inductive coils
    • H03K17/9537—Proximity switches using a magnetic detector using inductive coils in a resonant circuit
    • H03K17/9542—Proximity switches using a magnetic detector using inductive coils in a resonant circuit forming part of an oscillator
    • H03K17/9547—Proximity switches using a magnetic detector using inductive coils in a resonant circuit forming part of an oscillator with variable amplitude

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)
  • Electronic Switches (AREA)
FR7535599A 1974-11-22 1975-11-21 PROXIMITY CONTACTOR Granted FR2292242A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB50629/74A GB1531217A (en) 1974-11-22 1974-11-22 Proximity switch

Publications (2)

Publication Number Publication Date
FR2292242A1 FR2292242A1 (en) 1976-06-18
FR2292242B1 true FR2292242B1 (en) 1982-07-09

Family

ID=10456687

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7535599A Granted FR2292242A1 (en) 1974-11-22 1975-11-21 PROXIMITY CONTACTOR

Country Status (5)

Country Link
CA (1) CA1060115A (en)
FR (1) FR2292242A1 (en)
GB (1) GB1531217A (en)
IT (1) IT1051270B (en)
ZA (1) ZA756924B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3041840C2 (en) * 1980-11-06 1989-01-12 Honeywell Gmbh, 6050 Offenbach Two-wire feed circuit
GB2180938B (en) * 1985-09-24 1990-02-28 Square D Co Low leakage, a c proximity switch circuit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1924279C3 (en) * 1969-05-13 1975-06-12 Hans 4330 Muelheim Turck Two-pole thyristor switching device for AC circuits
FR2148789A5 (en) * 1971-08-02 1973-03-23 Crouzet Sa

Also Published As

Publication number Publication date
GB1531217A (en) 1978-11-08
IT1051270B (en) 1981-04-21
FR2292242A1 (en) 1976-06-18
CA1060115A (en) 1979-08-07
ZA756924B (en) 1976-10-27

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Legal Events

Date Code Title Description
ST Notification of lapse