FR2404229A1 - Dispositif de mesure de capacite d'un condensateur - Google Patents

Dispositif de mesure de capacite d'un condensateur

Info

Publication number
FR2404229A1
FR2404229A1 FR7728758A FR7728758A FR2404229A1 FR 2404229 A1 FR2404229 A1 FR 2404229A1 FR 7728758 A FR7728758 A FR 7728758A FR 7728758 A FR7728758 A FR 7728758A FR 2404229 A1 FR2404229 A1 FR 2404229A1
Authority
FR
France
Prior art keywords
counter
down counter
measuring device
memory system
circuit including
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
FR7728758A
Other languages
English (en)
Other versions
FR2404229B1 (fr
Inventor
Gilbert Dauge
Jacques Langlais
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.)
Testut Aequitas SA
Original Assignee
Testut Aequitas 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 Testut Aequitas SA filed Critical Testut Aequitas SA
Priority to FR7728758A priority Critical patent/FR2404229A1/fr
Priority to GB7837875A priority patent/GB2006970B/en
Priority to SE7809966A priority patent/SE431683B/sv
Priority to US05/945,413 priority patent/US4187460A/en
Priority to CA311,976A priority patent/CA1099340A/fr
Priority to DE2842028A priority patent/DE2842028C3/de
Priority to IT84136/78A priority patent/IT1107425B/it
Publication of FR2404229A1 publication Critical patent/FR2404229A1/fr
Application granted granted Critical
Publication of FR2404229B1 publication Critical patent/FR2404229B1/fr
Granted 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

a. Dispositif de mesure de la capacité d'un condensateur au moyen d'un cycle de comparaison des périodes de charge et de décharge dudit condensateur et d'un condensateur d'étalonnage respectivement pendant deux phases successives de mesure et d'étalonnage. b. Le dispositif comprend un oscillateur à relaxation 10, un amplificateur de gain unité 103 monté en adaptateur d'impédance, des moyens 11 pour commuter alternativement au cours de chaque phase une armature 1000 de l'un 100 des condensateurs au potentiel de terre et une armature 1040 de l'autre condensateur 104 à la sortie 1030 de l'amplificateur, des moyens 23 pour compter les impulsions délivrées par l'oscillateur au cours de chaque phase et des moyens 24 de déterminer des durées constantes des phases. Uniquement les charges des autres armatures 1001, 1041 des condensateurs sont respectivement mesurées au cours des phases d'un cycle. c. Mesure de capacité.
FR7728758A 1977-09-23 1977-09-23 Dispositif de mesure de capacite d'un condensateur Granted FR2404229A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
FR7728758A FR2404229A1 (fr) 1977-09-23 1977-09-23 Dispositif de mesure de capacite d'un condensateur
GB7837875A GB2006970B (en) 1977-09-23 1978-09-22 Capacitance measuring device
SE7809966A SE431683B (sv) 1977-09-23 1978-09-22 Anordning for metning av kapacitansen hos en kondensator
US05/945,413 US4187460A (en) 1977-09-23 1978-09-25 Capacitance measuring by comparison to reference capacitance
CA311,976A CA1099340A (fr) 1977-09-23 1978-09-25 Traduction non-disponible
DE2842028A DE2842028C3 (de) 1977-09-23 1978-09-25 Vorrichtung zum Messen der Kapazität eines Kondensators
IT84136/78A IT1107425B (it) 1977-09-23 1978-09-25 Dispositivo per misurare la capacita' di un condensatore

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7728758A FR2404229A1 (fr) 1977-09-23 1977-09-23 Dispositif de mesure de capacite d'un condensateur

Publications (2)

Publication Number Publication Date
FR2404229A1 true FR2404229A1 (fr) 1979-04-20
FR2404229B1 FR2404229B1 (fr) 1981-08-21

Family

ID=9195727

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7728758A Granted FR2404229A1 (fr) 1977-09-23 1977-09-23 Dispositif de mesure de capacite d'un condensateur

Country Status (1)

Country Link
FR (1) FR2404229A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0033705A2 (fr) * 1980-02-04 1981-08-12 Testut-Aequitas Dispositif de mesure de capacité pour instrument de pesage
FR2584822A1 (fr) * 1985-07-09 1987-01-16 Thomson Csf Dispositif de mesure du rapport de deux capacites de faibles valeurs

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2142732A1 (fr) * 1971-06-24 1973-02-02 Commissariat Energie Atomique
FR2254779A1 (fr) * 1973-12-18 1975-07-11 Roulements Soc Nouvelle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2142732A1 (fr) * 1971-06-24 1973-02-02 Commissariat Energie Atomique
FR2254779A1 (fr) * 1973-12-18 1975-07-11 Roulements Soc Nouvelle

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0033705A2 (fr) * 1980-02-04 1981-08-12 Testut-Aequitas Dispositif de mesure de capacité pour instrument de pesage
EP0033705B1 (fr) * 1980-02-04 1986-04-30 Testut-Aequitas Dispositif de mesure de capacité pour instrument de pesage
FR2584822A1 (fr) * 1985-07-09 1987-01-16 Thomson Csf Dispositif de mesure du rapport de deux capacites de faibles valeurs
US4797603A (en) * 1985-07-09 1989-01-10 Thomson-Csf Device for measuring the ratio of two low value capacities

Also Published As

Publication number Publication date
FR2404229B1 (fr) 1981-08-21

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Legal Events

Date Code Title Description
ST Notification of lapse