CA938672A - Coupled inductance impedance measuring circuit with increased sensitivity and frequency independence - Google Patents

Coupled inductance impedance measuring circuit with increased sensitivity and frequency independence

Info

Publication number
CA938672A
CA938672A CA126116A CA126116A CA938672A CA 938672 A CA938672 A CA 938672A CA 126116 A CA126116 A CA 126116A CA 126116 A CA126116 A CA 126116A CA 938672 A CA938672 A CA 938672A
Authority
CA
Canada
Prior art keywords
measuring circuit
impedance measuring
increased sensitivity
coupled inductance
inductance impedance
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
CA126116A
Other languages
English (en)
Inventor
C. Abbe Robert
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.)
ADE Corp
Original Assignee
ADE Corp
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 ADE Corp filed Critical ADE Corp
Application granted granted Critical
Publication of CA938672A publication Critical patent/CA938672A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R17/00—Measuring arrangements involving comparison with a reference value, e.g. bridge

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
CA126116A 1970-10-28 1971-10-26 Coupled inductance impedance measuring circuit with increased sensitivity and frequency independence Expired CA938672A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US8455470A 1970-10-28 1970-10-28

Publications (1)

Publication Number Publication Date
CA938672A true CA938672A (en) 1973-12-18

Family

ID=22185705

Family Applications (1)

Application Number Title Priority Date Filing Date
CA126116A Expired CA938672A (en) 1970-10-28 1971-10-26 Coupled inductance impedance measuring circuit with increased sensitivity and frequency independence

Country Status (10)

Country Link
US (1) US3694741A (xx)
JP (1) JPS5423593B1 (xx)
BE (1) BE774541A (xx)
CA (1) CA938672A (xx)
CH (1) CH558534A (xx)
DE (1) DE2153121A1 (xx)
FR (1) FR2111890B1 (xx)
GB (1) GB1376152A (xx)
NL (1) NL7114890A (xx)
SE (1) SE371019B (xx)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4093915A (en) * 1976-01-12 1978-06-06 Setra Systems, Inc. Capacitance measuring system
DE3024241C2 (de) * 1980-06-27 1984-03-08 Günter Dr.techn. 4630 Bochum Schierjott Schaltungsanordnung zum Eliminieren des Einflusses einer Phasenverschiebung
US4931962A (en) * 1988-05-13 1990-06-05 Ade Corporation Fixture and nonrepeatable error compensation system
US4918376A (en) * 1989-03-07 1990-04-17 Ade Corporation A.C. capacitive gauging system
US4958129A (en) * 1989-03-07 1990-09-18 Ade Corporation Prealigner probe
US5102280A (en) * 1989-03-07 1992-04-07 Ade Corporation Robot prealigner
EP1103007B1 (de) 1998-08-03 2003-09-17 Pepperl + Fuchs Gmbh Kapazitiver näherungsschalter zur auswertung kleiner kapazitätsänderungen und verfahren hierzu
DE19843749A1 (de) * 1998-08-03 2000-02-17 Pepperl & Fuchs Verfahren und Schaltungsanordnung zur Auswertung kleiner Kapazitätsänderungen
DE19945330C2 (de) * 1999-09-22 2002-10-31 Sie Sensorik Ind Elektronik Gm Verfahren zur Detektion und Auswertung kleiner Kapazitätsänderungen zur Umsetzung in ein Schaltsignal und kapazitiver Sensor hierzu

Also Published As

Publication number Publication date
GB1376152A (en) 1974-12-04
FR2111890A1 (xx) 1972-06-09
SE371019B (xx) 1974-11-04
BE774541A (fr) 1972-04-27
DE2153121A1 (de) 1972-05-04
FR2111890B1 (xx) 1975-08-29
JPS479692A (xx) 1972-05-18
US3694741A (en) 1972-09-26
JPS5423593B1 (xx) 1979-08-15
CH558534A (fr) 1975-01-31
NL7114890A (xx) 1972-05-03

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