CA1128129A - Method for measuring low capacities - Google Patents
Method for measuring low capacitiesInfo
- Publication number
- CA1128129A CA1128129A CA313,113A CA313113A CA1128129A CA 1128129 A CA1128129 A CA 1128129A CA 313113 A CA313113 A CA 313113A CA 1128129 A CA1128129 A CA 1128129A
- Authority
- CA
- Canada
- Prior art keywords
- output
- measured
- capacitance
- input
- amplifier
- 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
Links
- 238000000034 method Methods 0.000 title abstract description 13
- 230000001419 dependent effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims 1
- 230000008030 elimination Effects 0.000 abstract 1
- 238000003379 elimination reaction Methods 0.000 abstract 1
- BSYNRYMUTXBXSQ-UHFFFAOYSA-N Aspirin Chemical compound CC(=O)OC1=CC=CC=C1C(O)=O BSYNRYMUTXBXSQ-UHFFFAOYSA-N 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- FZKWRPSUNUOXKJ-CVHRZJFOSA-N (4s,4ar,5s,5ar,6r,12ar)-4-(dimethylamino)-1,5,10,11,12a-pentahydroxy-6-methyl-3,12-dioxo-4a,5,5a,6-tetrahydro-4h-tetracene-2-carboxamide;hydrate Chemical compound O.C1=CC=C2[C@H](C)[C@@H]([C@H](O)[C@@H]3[C@](C(O)=C(C(N)=O)C(=O)[C@H]3N(C)C)(O)C3=O)C3=C(O)C2=C1O FZKWRPSUNUOXKJ-CVHRZJFOSA-N 0.000 description 1
- 241000272470 Circus Species 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000011073 invertase Nutrition 0.000 description 1
- QHGVXILFMXYDRS-UHFFFAOYSA-N pyraclofos Chemical compound C1=C(OP(=O)(OCC)SCCC)C=NN1C1=CC=C(Cl)C=C1 QHGVXILFMXYDRS-UHFFFAOYSA-N 0.000 description 1
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)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI773063 | 1977-10-14 | ||
| FI773063A FI57319C (fi) | 1977-10-14 | 1977-10-14 | Foerfarande foer maetning av smao kapacitanser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1128129A true CA1128129A (en) | 1982-07-20 |
Family
ID=8511140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA313,113A Expired CA1128129A (en) | 1977-10-14 | 1978-10-11 | Method for measuring low capacities |
Country Status (10)
Families Citing this family (11)
| 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 (enrdf_load_stackoverflow) * | 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 |
| EP2344896A1 (en) * | 2008-11-02 | 2011-07-20 | Siemens Aktiengesellschaft | Current sensor capacitance measuring circuit |
| FR2977950B1 (fr) * | 2011-07-13 | 2014-11-07 | Jean Noel Lefebvre | Dispositif de detection capacitif |
Family Cites Families (5)
| 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 (enrdf_load_stackoverflow) * | 1971-06-24 | 1975-02-07 | Commissariat Energie Atomique | |
| FR2208121B1 (enrdf_load_stackoverflow) * | 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 |
-
1977
- 1977-10-14 FI FI773063A patent/FI57319C/fi not_active IP Right Cessation
-
1978
- 1978-10-09 ZA ZA00785694A patent/ZA785694B/xx unknown
- 1978-10-10 DE DE2844121A patent/DE2844121C2/de not_active Expired
- 1978-10-11 CA CA313,113A patent/CA1128129A/en not_active Expired
- 1978-10-12 IT IT28692/78A patent/IT1100121B/it active
- 1978-10-12 AU AU40675/78A patent/AU523345B2/en not_active Expired
- 1978-10-13 BR BR7806786A patent/BR7806786A/pt unknown
- 1978-10-13 FR FR7829343A patent/FR2410280A1/fr active Granted
- 1978-10-13 JP JP12521278A patent/JPS5498696A/ja active Pending
- 1978-10-16 GB GB7840632A patent/GB2006442B/en not_active Expired
-
1987
- 1987-06-08 JP JP1987087613U patent/JPH056544Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| ZA785694B (en) | 1979-09-26 |
| FI773063A7 (fi) | 1979-04-15 |
| JPS62201074U (enrdf_load_stackoverflow) | 1987-12-22 |
| IT1100121B (it) | 1985-09-28 |
| AU523345B2 (en) | 1982-07-22 |
| AU4067578A (en) | 1980-04-17 |
| BR7806786A (pt) | 1979-05-15 |
| GB2006442B (en) | 1982-04-28 |
| FR2410280A1 (fr) | 1979-06-22 |
| GB2006442A (en) | 1979-05-02 |
| FR2410280B1 (enrdf_load_stackoverflow) | 1984-01-06 |
| IT7828692A0 (it) | 1978-10-12 |
| JPH056544Y2 (enrdf_load_stackoverflow) | 1993-02-19 |
| JPS5498696A (en) | 1979-08-03 |
| DE2844121A1 (de) | 1979-04-19 |
| FI57319C (fi) | 1980-07-10 |
| DE2844121C2 (de) | 1981-09-24 |
| FI57319B (fi) | 1980-03-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |