ES338438A1 - Perfeccionamientos en los captadores de proximidad por in- duccion a alta frecuencia. - Google Patents

Perfeccionamientos en los captadores de proximidad por in- duccion a alta frecuencia.

Info

Publication number
ES338438A1
ES338438A1 ES338438A ES338438A ES338438A1 ES 338438 A1 ES338438 A1 ES 338438A1 ES 338438 A ES338438 A ES 338438A ES 338438 A ES338438 A ES 338438A ES 338438 A1 ES338438 A1 ES 338438A1
Authority
ES
Spain
Prior art keywords
winding
transistor
point
capacitor
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.)
Expired
Application number
ES338438A
Other languages
English (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.)
Compteurs Schlumberger SA
Original Assignee
Compteurs Schlumberger SA
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 Compteurs Schlumberger SA filed Critical Compteurs Schlumberger SA
Publication of ES338438A1 publication Critical patent/ES338438A1/es
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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

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)
ES338438A 1966-04-15 1967-03-25 Perfeccionamientos en los captadores de proximidad por in- duccion a alta frecuencia. Expired ES338438A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR57754A FR1482206A (fr) 1966-04-15 1966-04-15 Perfectionnements aux capteurs de proximité

Publications (1)

Publication Number Publication Date
ES338438A1 true ES338438A1 (es) 1968-04-01

Family

ID=8606335

Family Applications (1)

Application Number Title Priority Date Filing Date
ES338438A Expired ES338438A1 (es) 1966-04-15 1967-03-25 Perfeccionamientos en los captadores de proximidad por in- duccion a alta frecuencia.

Country Status (4)

Country Link
DE (1) DE1623102B2 (es)
ES (1) ES338438A1 (es)
FR (1) FR1482206A (es)
GB (1) GB1187377A (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1903736B2 (de) * 1969-01-25 1972-02-24 Vdo Tachometer Werke Adolf Schindling Gmbh, 6000 Frankfurt Schaltungsanordnung zum beruehrungslosen abtasten von bewegten metallischen gegenstaenden
BE790048A (fr) * 1971-10-13 1973-02-01 Telemecanique Electrique Circuit oscillant pour detecteur de proximite
FR2420119A1 (fr) * 1978-03-17 1979-10-12 Telemecanique Electrique Detecteur de proximite inductif fournissant un signal de sortie proportionnel a la distance
USRE34946E (en) * 1987-05-05 1995-05-23 New Holland North America, Inc. Method and apparatus for adjusting a shear bar relative to a cutter head
US4799625A (en) * 1987-05-05 1989-01-24 Ford New Holland, Inc. Method and apparatus for adjusting a shear bar relative to a cutter head
US4934612A (en) * 1988-03-28 1990-06-19 Deere & Company Automatic forage harvester shearbar adjusting

Also Published As

Publication number Publication date
DE1623102A1 (de) 1970-12-03
DE1623102B2 (de) 1976-11-18
GB1187377A (en) 1970-04-08
FR1482206A (fr) 1967-05-26

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