GB2006442B - Measuring low capacitances - Google Patents

Measuring low capacitances

Info

Publication number
GB2006442B
GB2006442B GB7840632A GB7840632A GB2006442B GB 2006442 B GB2006442 B GB 2006442B GB 7840632 A GB7840632 A GB 7840632A GB 7840632 A GB7840632 A GB 7840632A GB 2006442 B GB2006442 B GB 2006442B
Authority
GB
United Kingdom
Prior art keywords
measuring low
low capacitances
capacitances
measuring
low
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
GB7840632A
Other versions
GB2006442A (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.)
Vaisala Oy
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 GB2006442A publication Critical patent/GB2006442A/en
Application granted granted Critical
Publication of GB2006442B publication Critical patent/GB2006442B/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)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Amplifiers (AREA)
GB7840632A 1977-10-14 1978-10-16 Measuring low capacitances Expired GB2006442B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI773063A FI57319C (en) 1977-10-14 1977-10-14 ADJUSTMENT OF CAPACITY IN CAPACITY

Publications (2)

Publication Number Publication Date
GB2006442A GB2006442A (en) 1979-05-02
GB2006442B true GB2006442B (en) 1982-04-28

Family

ID=8511140

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7840632A Expired GB2006442B (en) 1977-10-14 1978-10-16 Measuring low capacitances

Country Status (10)

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

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2475231A1 (en) * 1980-02-04 1981-08-07 Testut Aequitas CAPACITY MEASURING DEVICE, IN PARTICULAR FOR A WEIGHTING INSTRUMENT
JPS56166411A (en) * 1980-05-27 1981-12-21 Yokogawa Hokushin Electric Corp Capacity type displacement transducer
DE3117808A1 (en) * 1981-05-06 1982-11-25 Robert Bosch Gmbh, 7000 Stuttgart CIRCUIT ARRANGEMENT FOR MEASURING INDUCTIVE CHANGES
DK4383A (en) * 1983-01-07 1984-07-08 Nils Aage Juul Eilersen oscillator circuit
FI69932C (en) * 1984-05-31 1986-05-26 Vaisala Oy MAINTENANCE FOUNDATION CAPACITORS SPECIFIC FOR SMAR CAPACITORS VID VILKER MAN ANVAENDER TVAO REFERENSER
JPS6114578A (en) * 1984-06-30 1986-01-22 Suzuki Shigeo Capacity meter
FI74549C (en) * 1986-02-13 1988-02-08 Vaisala Oy MAETNINGSFOERFARANDE FOER IMPEDANSER, SAERSKILT SMAO KAPACITANSER.
DE4039006C1 (en) * 1990-12-06 1992-03-12 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung Ev, 8000 Muenchen, De
JP2007187509A (en) * 2006-01-12 2007-07-26 Denso Corp Physical quantity sensor of capacitance type
US8604809B2 (en) 2008-11-02 2013-12-10 Siemens Aktiengesellschaft Current sensor capacity measuring system
FR2977950B1 (en) * 2011-07-13 2014-11-07 Jean Noel Lefebvre CAPACITIVE DETECTION DEVICE

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 (en) * 1971-06-24 1975-02-07 Commissariat Energie Atomique
FR2208121B1 (en) * 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
JPS5498696A (en) 1979-08-03
GB2006442A (en) 1979-05-02
FI773063A (en) 1979-04-15
IT1100121B (en) 1985-09-28
FR2410280B1 (en) 1984-01-06
AU523345B2 (en) 1982-07-22
DE2844121A1 (en) 1979-04-19
FI57319C (en) 1980-07-10
FR2410280A1 (en) 1979-06-22
DE2844121C2 (en) 1981-09-24
AU4067578A (en) 1980-04-17
CA1128129A (en) 1982-07-20
JPS62201074U (en) 1987-12-22
ZA785694B (en) 1979-09-26
JPH056544Y2 (en) 1993-02-19
BR7806786A (en) 1979-05-15
IT7828692A0 (en) 1978-10-12
FI57319B (en) 1980-03-31

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19961016