FI57319C - Foerfarande foer maetning av smao kapacitanser - Google Patents

Foerfarande foer maetning av smao kapacitanser Download PDF

Info

Publication number
FI57319C
FI57319C FI773063A FI773063A FI57319C FI 57319 C FI57319 C FI 57319C FI 773063 A FI773063 A FI 773063A FI 773063 A FI773063 A FI 773063A FI 57319 C FI57319 C FI 57319C
Authority
FI
Finland
Prior art keywords
capacitance
measured
capacitances
input
circuit
Prior art date
Application number
FI773063A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI57319B (fi
FI773063A (fi
Inventor
Jorma 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
Priority to FI773063A priority Critical patent/FI57319C/fi
Priority to ZA00785694A priority patent/ZA785694B/xx
Priority to DE2844121A priority patent/DE2844121C2/de
Priority to CA313,113A priority patent/CA1128129A/en
Priority to IT28692/78A priority patent/IT1100121B/it
Priority to AU40675/78A priority patent/AU523345B2/en
Priority to BR7806786A priority patent/BR7806786A/pt
Priority to FR7829343A priority patent/FR2410280A1/fr
Priority to JP12521278A priority patent/JPS5498696A/ja
Priority to GB7840632A priority patent/GB2006442B/en
Publication of FI773063A publication Critical patent/FI773063A/fi
Application granted granted Critical
Publication of FI57319B publication Critical patent/FI57319B/fi
Publication of FI57319C publication Critical patent/FI57319C/fi
Priority to JP1987087613U priority patent/JPH056544Y2/ja

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)
FI773063A 1977-10-14 1977-10-14 Foerfarande foer maetning av smao kapacitanser FI57319C (fi)

Priority Applications (11)

Application Number Priority Date Filing Date Title
FI773063A FI57319C (fi) 1977-10-14 1977-10-14 Foerfarande foer maetning av smao kapacitanser
ZA00785694A ZA785694B (en) 1977-10-14 1978-10-09 A method for measuring low capacities
DE2844121A DE2844121C2 (de) 1977-10-14 1978-10-10 Einrichtung zur Messung von kleinen Kapazitäten
CA313,113A CA1128129A (en) 1977-10-14 1978-10-11 Method for measuring low capacities
AU40675/78A AU523345B2 (en) 1977-10-14 1978-10-12 A method for measuring low capacitances
IT28692/78A IT1100121B (it) 1977-10-14 1978-10-12 Procedimento per misurare basse capacita',particolarmente utile per radiosonde
BR7806786A BR7806786A (pt) 1977-10-14 1978-10-13 Processo para medicao de baixas capacitancias
FR7829343A FR2410280A1 (fr) 1977-10-14 1978-10-13 Procede de mesure de faibles capacites
JP12521278A JPS5498696A (en) 1977-10-14 1978-10-13 Method of measuring low capacity
GB7840632A GB2006442B (en) 1977-10-14 1978-10-16 Measuring low capacitances
JP1987087613U JPH056544Y2 (zh) 1977-10-14 1987-06-08

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI773063A FI57319C (fi) 1977-10-14 1977-10-14 Foerfarande foer maetning av smao kapacitanser
FI773063 1977-10-14

Publications (3)

Publication Number Publication Date
FI773063A FI773063A (fi) 1979-04-15
FI57319B FI57319B (fi) 1980-03-31
FI57319C true FI57319C (fi) 1980-07-10

Family

ID=8511140

Family Applications (1)

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

Country Status (10)

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

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 (zh) * 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
US8604809B2 (en) 2008-11-02 2013-12-10 Siemens Aktiengesellschaft Current sensor capacity measuring system
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 (zh) * 1971-06-24 1975-02-07 Commissariat Energie Atomique
FR2208121B1 (zh) * 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
FR2410280B1 (zh) 1984-01-06
AU523345B2 (en) 1982-07-22
GB2006442B (en) 1982-04-28
AU4067578A (en) 1980-04-17
DE2844121C2 (de) 1981-09-24
JPS62201074U (zh) 1987-12-22
IT7828692A0 (it) 1978-10-12
GB2006442A (en) 1979-05-02
JPS5498696A (en) 1979-08-03
FR2410280A1 (fr) 1979-06-22
FI57319B (fi) 1980-03-31
JPH056544Y2 (zh) 1993-02-19
FI773063A (fi) 1979-04-15
IT1100121B (it) 1985-09-28
CA1128129A (en) 1982-07-20
DE2844121A1 (de) 1979-04-19
BR7806786A (pt) 1979-05-15
ZA785694B (en) 1979-09-26

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Legal Events

Date Code Title Description
MM Patent lapsed
MM Patent lapsed

Owner name: VAISALA OY