CA1119253A - Capacitive pick-off circuit - Google Patents

Capacitive pick-off circuit

Info

Publication number
CA1119253A
CA1119253A CA000320257A CA320257A CA1119253A CA 1119253 A CA1119253 A CA 1119253A CA 000320257 A CA000320257 A CA 000320257A CA 320257 A CA320257 A CA 320257A CA 1119253 A CA1119253 A CA 1119253A
Authority
CA
Canada
Prior art keywords
amplifier
circuit
capacitor
output terminal
input
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
CA000320257A
Other languages
English (en)
French (fr)
Inventor
Joseph P. Gerber
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.)
Sundstrand Data Control Inc
Original Assignee
Sundstrand Data Control Inc
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 Sundstrand Data Control Inc filed Critical Sundstrand Data Control Inc
Application granted granted Critical
Publication of CA1119253A publication Critical patent/CA1119253A/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
    • G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
    • G01R27/2605—Measuring capacitance

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Amplifiers (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
CA000320257A 1978-02-10 1979-01-25 Capacitive pick-off circuit Expired CA1119253A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US876,602 1978-02-10
US05/876,602 US4167697A (en) 1978-02-10 1978-02-10 Capacitive pick-off circuit

Publications (1)

Publication Number Publication Date
CA1119253A true CA1119253A (en) 1982-03-02

Family

ID=25368119

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000320257A Expired CA1119253A (en) 1978-02-10 1979-01-25 Capacitive pick-off circuit

Country Status (12)

Country Link
US (1) US4167697A (en, 2012)
JP (1) JPS54118880A (en, 2012)
AU (1) AU528772B2 (en, 2012)
CA (1) CA1119253A (en, 2012)
CH (1) CH629311A5 (en, 2012)
DE (1) DE2904834C2 (en, 2012)
FR (1) FR2417117A1 (en, 2012)
GB (1) GB2015173B (en, 2012)
IL (1) IL56640A (en, 2012)
IT (1) IT1114522B (en, 2012)
NO (1) NO790414L (en, 2012)
SE (1) SE7901195L (en, 2012)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4509007A (en) * 1982-09-30 1985-04-02 Ibm Corporation Differential sensor measuring apparatus and method including sensor compensator circuitry
US4694279A (en) * 1986-10-17 1987-09-15 University Of Pittsburgh Vector electronic control device
DE4020196A1 (de) * 1990-06-25 1992-01-09 Weidmueller C A Gmbh Co Messeinrichtung und verfahren zu ihrer betriebseinstellung
JP3233791B2 (ja) * 1994-08-25 2001-11-26 株式会社山武 差動容量反転積分器及びこれを用いた静電容量変化量検出装置
US5802728A (en) * 1995-08-17 1998-09-08 Watson Industries, Inc. Liquid level and angle detector
FR2751074B1 (fr) * 1996-07-11 1998-11-06 Comm Composants Soc Ind Dispositif de mesure capacitive du niveau d'un liquide dans un reservoir
DE10027507C1 (de) * 2000-06-06 2002-01-03 Rechner Ind Elektronik Gmbh Schaltungsanordnung zur Erfassung von Kapazitätsänderungen
US9285207B2 (en) * 2013-03-13 2016-03-15 Invensense, Inc. Linear capacitive displacement sensor
US11014194B2 (en) * 2017-11-02 2021-05-25 Coherent, Inc. Laser material processing distance gauge

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE306970B (en, 2012) * 1965-04-27 1968-12-16 B Bjerede
US3753373A (en) * 1965-10-22 1973-08-21 Bissett Berman Corp Transducer system
US3487300A (en) * 1967-09-18 1969-12-30 Robertshaw Controls Co Capacitance to current transducer employing capacitor charged to preset voltage by constant current and feedback current related to capacitance change
US3518537A (en) * 1967-11-28 1970-06-30 Richard Mcfee Apparatus and method for determining the capacitance and conductance of capacitors
US3641431A (en) * 1968-10-01 1972-02-08 Gleason Works Method for inspecting and adjusting cutter blades
US3665300A (en) * 1971-03-05 1972-05-23 Gen Electric Liquid layer thickness device having a floating electrode
US3757210A (en) * 1972-03-09 1973-09-04 Betz Laboratories Us system apparatus and method for testing the amount of deposition in an aqueo
US3855527A (en) * 1974-01-07 1974-12-17 Western Electric Co Method and system for determining the resistance of the dielectric in a capacitor
AU504091B2 (en) * 1976-07-06 1979-10-04 Sundstrand Data Control, Inc. Accelerometer
US4096758A (en) * 1977-05-24 1978-06-27 Moore Products Co. Pressure to electric transducer

Also Published As

Publication number Publication date
JPS54118880A (en) 1979-09-14
DE2904834C2 (de) 1981-12-17
SE7901195L (sv) 1979-08-11
GB2015173B (en) 1982-10-20
DE2904834A1 (de) 1979-08-16
GB2015173A (en) 1979-09-05
FR2417117A1 (fr) 1979-09-07
IT7947938A0 (it) 1979-02-08
AU528772B2 (en) 1983-05-12
NO790414L (no) 1979-08-13
CH629311A5 (fr) 1982-04-15
FR2417117B1 (en, 2012) 1983-10-28
IT1114522B (it) 1986-01-27
AU4411979A (en) 1979-08-16
IL56640A (en) 1981-06-29
US4167697A (en) 1979-09-11

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Legal Events

Date Code Title Description
MKEX Expiry