FR1257462A - Circuit électrique pour la détection d'une variation de capacité entre une sonde et la terre - Google Patents

Circuit électrique pour la détection d'une variation de capacité entre une sonde et la terre

Info

Publication number
FR1257462A
FR1257462A FR827767A FR827767A FR1257462A FR 1257462 A FR1257462 A FR 1257462A FR 827767 A FR827767 A FR 827767A FR 827767 A FR827767 A FR 827767A FR 1257462 A FR1257462 A FR 1257462A
Authority
FR
France
Prior art keywords
capacitance
probe
earth
variation
detecting
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
FR827767A
Other languages
English (en)
Inventor
George William Gurry
Bertram Mccarthy
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
Priority claimed from GB17308/59A external-priority patent/GB899911A/en
Application filed filed Critical
Priority to FR827767A priority Critical patent/FR1257462A/fr
Application granted granted Critical
Publication of FR1257462A publication Critical patent/FR1257462A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M1/00—Design features of general application
    • G06M1/08—Design features of general application for actuating the drive
    • G06M1/10—Design features of general application for actuating the drive by electric or magnetic means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
    • G01L5/10—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using electrical means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/483—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by variable capacitance detectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
    • G01R23/06—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into an amplitude of current or voltage
    • G01R23/09—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into an amplitude of current or voltage using analogue integrators, e.g. capacitors establishing a mean value by balance of input signals and defined discharge signals or leakage

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Power Engineering (AREA)
FR827767A 1959-05-21 1960-05-20 Circuit électrique pour la détection d'une variation de capacité entre une sonde et la terre Expired FR1257462A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR827767A FR1257462A (fr) 1959-05-21 1960-05-20 Circuit électrique pour la détection d'une variation de capacité entre une sonde et la terre

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB17308/59A GB899911A (en) 1959-05-21 1959-05-21 Improvements in electrical circuit means for sensing a change in capacity between a probe and earth
FR827767A FR1257462A (fr) 1959-05-21 1960-05-20 Circuit électrique pour la détection d'une variation de capacité entre une sonde et la terre

Publications (1)

Publication Number Publication Date
FR1257462A true FR1257462A (fr) 1961-03-31

Family

ID=26186102

Family Applications (1)

Application Number Title Priority Date Filing Date
FR827767A Expired FR1257462A (fr) 1959-05-21 1960-05-20 Circuit électrique pour la détection d'une variation de capacité entre une sonde et la terre

Country Status (1)

Country Link
FR (1) FR1257462A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3428889A (en) * 1966-03-16 1969-02-18 Sun Oil Co Apparatus for measuring blade-die spacing in a pelletizer including a rotating capacitor blade
WO2014177554A1 (fr) 2013-04-29 2014-11-06 L'oreal Tête de distribution pour la distribution d'un produit sous la forme d'une pulvérisation ou sous forme de gouttes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3428889A (en) * 1966-03-16 1969-02-18 Sun Oil Co Apparatus for measuring blade-die spacing in a pelletizer including a rotating capacitor blade
WO2014177554A1 (fr) 2013-04-29 2014-11-06 L'oreal Tête de distribution pour la distribution d'un produit sous la forme d'une pulvérisation ou sous forme de gouttes

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