ZA785694B - A method for measuring low capacities - Google Patents

A method for measuring low capacities

Info

Publication number
ZA785694B
ZA785694B ZA00785694A ZA785694A ZA785694B ZA 785694 B ZA785694 B ZA 785694B ZA 00785694 A ZA00785694 A ZA 00785694A ZA 785694 A ZA785694 A ZA 785694A ZA 785694 B ZA785694 B ZA 785694B
Authority
ZA
South Africa
Prior art keywords
measuring low
low capacities
capacities
measuring
low
Prior art date
Application number
ZA00785694A
Other languages
English (en)
Inventor
J Ponkala
Original Assignee
Vaisala Oy
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 Vaisala Oy filed Critical Vaisala Oy
Publication of ZA785694B publication Critical patent/ZA785694B/xx

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)
  • Transmission And Conversion Of Sensor Element Output (AREA)
ZA00785694A 1977-10-14 1978-10-09 A method for measuring low capacities ZA785694B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI773063A FI57319C (fi) 1977-10-14 1977-10-14 Foerfarande foer maetning av smao kapacitanser

Publications (1)

Publication Number Publication Date
ZA785694B true ZA785694B (en) 1979-09-26

Family

ID=8511140

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00785694A ZA785694B (en) 1977-10-14 1978-10-09 A method for measuring low capacities

Country Status (10)

Country Link
JP (2) JPS5498696A (pt)
AU (1) AU523345B2 (pt)
BR (1) BR7806786A (pt)
CA (1) CA1128129A (pt)
DE (1) DE2844121C2 (pt)
FI (1) FI57319C (pt)
FR (1) FR2410280A1 (pt)
GB (1) GB2006442B (pt)
IT (1) IT1100121B (pt)
ZA (1) ZA785694B (pt)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2475231A1 (fr) * 1980-02-04 1981-08-07 Testut Aequitas Dispositif de mesure de capacite, en particulier pour instrument de pesage
JPS56166411A (en) * 1980-05-27 1981-12-21 Yokogawa Hokushin Electric Corp Capacity type displacement transducer
DE3117808A1 (de) * 1981-05-06 1982-11-25 Robert Bosch Gmbh, 7000 Stuttgart Schaltungsanordnung zur messung von induktivitaetsaenderungen
DK4383A (da) * 1983-01-07 1984-07-08 Nils Aage Juul Eilersen Oscillatorkobling
FI69932C (fi) * 1984-05-31 1986-05-26 Vaisala Oy Maetningsfoerfarande foer kapacitanser speciellt foer smao kapacitanser vid vilker man anvaender tvao referenser
JPS6114578A (ja) * 1984-06-30 1986-01-22 Suzuki Shigeo 容量計
FI74549C (fi) * 1986-02-13 1988-02-08 Vaisala Oy Maetningsfoerfarande foer impedanser, saerskilt smao kapacitanser.
DE4039006C1 (pt) * 1990-12-06 1992-03-12 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung Ev, 8000 Muenchen, De
JP2007187509A (ja) * 2006-01-12 2007-07-26 Denso Corp 容量式物理量センサ
CN102203624B (zh) * 2008-11-02 2015-05-20 西门子公司 电流传感器电容测量电路
FR2977950B1 (fr) * 2011-07-13 2014-11-07 Jean Noel Lefebvre Dispositif de detection capacitif

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3518537A (en) * 1967-11-28 1970-06-30 Richard Mcfee Apparatus and method for determining the capacitance and conductance of capacitors
US3626287A (en) * 1969-02-10 1971-12-07 C G I Corp System for responding to changes in capacitance of a sensing capacitor
FR2142732B1 (pt) * 1971-06-24 1975-02-07 Commissariat Energie Atomique
FR2208121B1 (pt) * 1972-11-29 1978-12-29 Commissariat Energie Atomique
US4083248A (en) * 1975-09-04 1978-04-11 Simmonds Precision Products, Inc. Digital liquid-level gauging systems

Also Published As

Publication number Publication date
FI57319C (fi) 1980-07-10
DE2844121A1 (de) 1979-04-19
IT1100121B (it) 1985-09-28
JPS5498696A (en) 1979-08-03
FR2410280A1 (fr) 1979-06-22
FI773063A (fi) 1979-04-15
FR2410280B1 (pt) 1984-01-06
FI57319B (fi) 1980-03-31
JPS62201074U (pt) 1987-12-22
CA1128129A (en) 1982-07-20
AU523345B2 (en) 1982-07-22
JPH056544Y2 (pt) 1993-02-19
GB2006442B (en) 1982-04-28
GB2006442A (en) 1979-05-02
DE2844121C2 (de) 1981-09-24
BR7806786A (pt) 1979-05-15
IT7828692A0 (it) 1978-10-12
AU4067578A (en) 1980-04-17

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