FR2423788A1 - CONVERSION CIRCUIT INTO A FREQUENCY OF THE SIZE GIVEN BY A RESISTIVE, INDUCTIVE OR CAPACITIVE ELEMENT - Google Patents

CONVERSION CIRCUIT INTO A FREQUENCY OF THE SIZE GIVEN BY A RESISTIVE, INDUCTIVE OR CAPACITIVE ELEMENT

Info

Publication number
FR2423788A1
FR2423788A1 FR7909074A FR7909074A FR2423788A1 FR 2423788 A1 FR2423788 A1 FR 2423788A1 FR 7909074 A FR7909074 A FR 7909074A FR 7909074 A FR7909074 A FR 7909074A FR 2423788 A1 FR2423788 A1 FR 2423788A1
Authority
FR
France
Prior art keywords
inductive
resistive
frequency
conversion circuit
capacitive element
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.)
Granted
Application number
FR7909074A
Other languages
French (fr)
Other versions
FR2423788B3 (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.)
Mannesmann VDO AG
Original Assignee
Mannesmann VDO AG
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 Mannesmann VDO AG filed Critical Mannesmann VDO AG
Publication of FR2423788A1 publication Critical patent/FR2423788A1/en
Application granted granted Critical
Publication of FR2423788B3 publication Critical patent/FR2423788B3/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
    • G01R19/252—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques using analogue/digital converters of the type with conversion of voltage or current into frequency and measuring of this frequency
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Level Indicators Using A Float (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Networks Using Active Elements (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

Circuit de conversion en une fréquence de la résistance variable créée par un circuit résistif, inductif ou capacitif. Ce circuit est un circuit oscillant comportant trois opérateurs intégrés inverseurs auxquels sont reliées des résistances actives et réactives incluant l'élément à résistance variable. Application à la mesure d'une grandeur physique non électrique par l'intermédiaire d'un microprocesseur et d'un appareil indicateur.A circuit for converting a variable resistor into a frequency created by a resistive, inductive or capacitive circuit. This circuit is an oscillating circuit comprising three integrated inverting operators to which active and reactive resistors are connected including the variable resistance element. Application to the measurement of a non-electrical physical quantity by means of a microprocessor and an indicating device.

FR7909074A 1978-04-17 1979-04-10 CONVERSION CIRCUIT INTO A FREQUENCY OF THE SIZE GIVEN BY A RESISTIVE, INDUCTIVE OR CAPACITIVE ELEMENT Granted FR2423788A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782816655 DE2816655A1 (en) 1978-04-17 1978-04-17 DEVICE FOR CONVERTING THE SIZE OF A RESISTANCE, INDUCTIVE OR CAPACITIVE ENCODER INTO A FREQUENCY

Publications (2)

Publication Number Publication Date
FR2423788A1 true FR2423788A1 (en) 1979-11-16
FR2423788B3 FR2423788B3 (en) 1982-01-22

Family

ID=6037211

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7909074A Granted FR2423788A1 (en) 1978-04-17 1979-04-10 CONVERSION CIRCUIT INTO A FREQUENCY OF THE SIZE GIVEN BY A RESISTIVE, INDUCTIVE OR CAPACITIVE ELEMENT

Country Status (5)

Country Link
JP (1) JPS54139449A (en)
AU (1) AU4554279A (en)
DE (1) DE2816655A1 (en)
FR (1) FR2423788A1 (en)
GB (1) GB2019010A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2492988A1 (en) * 1980-10-28 1982-04-30 Efcis Digital resistance meter for e.g. temp. measurement - measures count rate of RC oscillator formed with reference and temp. related resistance to calculate ratio of resistances

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61253917A (en) * 1985-05-02 1986-11-11 Nippon Denso Co Ltd Semiconductor integrated circuit
DE3642771A1 (en) * 1986-12-15 1988-06-23 Kuipers Ulrich METHOD AND DEVICE FOR MEASURING THE MEASURING SIZE OF A MEASURING OBJECT
GB0823719D0 (en) * 2008-12-31 2009-02-04 Spd Swiss Prec Diagnostics Gmb A conductive measurement cell

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2492988A1 (en) * 1980-10-28 1982-04-30 Efcis Digital resistance meter for e.g. temp. measurement - measures count rate of RC oscillator formed with reference and temp. related resistance to calculate ratio of resistances

Also Published As

Publication number Publication date
GB2019010A (en) 1979-10-24
JPS54139449A (en) 1979-10-29
AU4554279A (en) 1979-10-25
FR2423788B3 (en) 1982-01-22
DE2816655A1 (en) 1979-10-25

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Legal Events

Date Code Title Description
ST Notification of lapse