IT1200492B - Metodo per la misurazione di capacitanze,in particolare di basse capacitanze,in cui vengono utilizzati due riferimenti - Google Patents

Metodo per la misurazione di capacitanze,in particolare di basse capacitanze,in cui vengono utilizzati due riferimenti

Info

Publication number: IT1200492B
Authority: IT; Italy
Prior art keywords: references; particular low; low capacities; measuring capacitances; capacitances
Prior art date: 1984-05-31

Application number

IT20967/85A

Other languages

English (en)

Other versions

IT8520967A0 (it

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.)

1984-05-31

Filing date

1985-05-30

Publication date

1989-01-18

1985-05-30 Application filed by Vaisala Oy filed Critical Vaisala Oy

1985-05-30 Publication of IT8520967A0 publication Critical patent/IT8520967A0/it

1989-01-18 Application granted granted Critical

1989-01-18 Publication of IT1200492B publication Critical patent/IT1200492B/it

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)
Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Transmission And Conversion Of Sensor Element Output (AREA)

IT20967/85A 1984-05-31 1985-05-30 Metodo per la misurazione di capacitanze,in particolare di basse capacitanze,in cui vengono utilizzati due riferimenti IT1200492B (it)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FI842193A FI69932C (fi)	1984-05-31	1984-05-31	Maetningsfoerfarande foer kapacitanser speciellt foer smao kapacitanser vid vilker man anvaender tvao referenser

Publications (2)

Publication Number	Publication Date
IT8520967A0 IT8520967A0 (it)	1985-05-30
IT1200492B true IT1200492B (it)	1989-01-18

Family

ID=8519172

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
IT20967/85A IT1200492B (it)	1984-05-31	1985-05-30	Metodo per la misurazione di capacitanze,in particolare di basse capacitanze,in cui vengono utilizzati due riferimenti

Country Status (10)

Country	Link
JP (1)	JPS60262067A (it)
AU (1)	AU587578B2 (it)
BR (1)	BR8502572A (it)
CA (1)	CA1262372A (it)
DE (1)	DE3519390A1 (it)
FI (1)	FI69932C (it)
FR (1)	FR2565353B1 (it)
GB (1)	GB2159965B (it)
IT (1)	IT1200492B (it)
ZA (1)	ZA853855B (it)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FI74549C (fi) *	1986-02-13	1988-02-08	Vaisala Oy	Maetningsfoerfarande foer impedanser, saerskilt smao kapacitanser.
DE19524387C1 (de) *	1995-07-04	1996-11-07	Siemens Ag	Schaltungsanordnung und Verfahren zum Messen eines Kapazitätsunterschiedes zwischen einer ersten Kapazität C1 und einer zweiten Kapazität C2
CN102096057B (zh) *	2010-11-16	2013-10-02	北京航天测控技术有限公司	一种电容测量电路的校准方法及装置

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE970798C (de) *	1953-05-16	1958-10-30	Rolf Scheunert Dr Ing	Anordnung zur Messung von vorzugsweise sehr kleinen Kapazitaeten bzw. Kapazitaetsaenderungen
DE1026860B (de) *	1956-05-24	1958-03-27	Die Bundesrepublik Deutschland	Schwebungskompensator
US3480857A (en) *	1967-12-27	1969-11-25	Ibm	Digital method and apparatus for measuring small inductances and capacitances
DE2508033A1 (de) *	1975-02-25	1976-09-02	Zinn Erich	Kapazitaets- und verlustfaktormesseinrichtung mit selbsttaetiger abgleichung
US4041382A (en) *	1976-08-16	1977-08-09	The Sippican Corporation	Calibrating a measurement system including bridge circuit
SE431683B (sv) *	1977-09-23	1984-02-20	Testut Aequitas	Anordning for metning av kapacitansen hos en kondensator
FI54664C (fi) *	1977-10-14	1979-01-10	Vaisala Oy	Elektronisk omkopplingstroemstaellare i synnerhet foer telemeteranvaendning i sonder
FI57319C (fi) *	1977-10-14	1980-07-10	Vaisala Oy	Foerfarande foer maetning av smao kapacitanser
US4130796A (en) *	1977-12-07	1978-12-19	Westinghouse Electric Corp.	Calibrating and measuring circuit for a capacitive probe-type instrument
AU530552B2 (en) *	1978-04-07	1983-07-21	Minister of Public Works of Nsw	Wave level measuring apparatus
JPS5528157A (en) *	1978-08-19	1980-02-28	Fuji Electric Co Ltd	Displacement converter
US4295091B1 (en) *	1978-10-12	1995-08-15	Vaisala Oy	Circuit for measuring low capacitances
FR2446037A1 (fr) *	1979-01-03	1980-08-01	Vaisala Oy	Procede d'emission de signaux pour une radiosonde
DE2901516C2 (de) *	1979-01-16	1985-01-24	VEGA Grieshaber GmbH & Co, 7620 Wolfach	Anordnung zur Erzeugung eines einer Kapazität proportionalen Signals
US4322977A (en) *	1980-05-27	1982-04-06	The Bendix Corporation	Pressure measuring system
SE436936B (sv) *	1981-01-29	1985-01-28	Asea Ab	Integrerad kapacitiv givare
US4398426A (en) *	1981-07-02	1983-08-16	Kavlico Corporation	Linear capacitive pressure transducer system
DE3321580A1 (de) *	1983-06-15	1984-12-20	Philips Patentverwaltung Gmbh, 2000 Hamburg	Einrichtung zur erfassung der temperatur fuer die kompensation temperaturabhaengiger fehler in einem kapazitiven differenzdrucksensor

1984
- 1984-05-31 FI FI842193A patent/FI69932C/fi not_active IP Right Cessation
1985
- 1985-05-21 ZA ZA853855A patent/ZA853855B/xx unknown
- 1985-05-22 AU AU42749/85A patent/AU587578B2/en not_active Ceased
- 1985-05-30 BR BR8502572A patent/BR8502572A/pt not_active IP Right Cessation
- 1985-05-30 CA CA000482808A patent/CA1262372A/en not_active Expired
- 1985-05-30 DE DE19853519390 patent/DE3519390A1/de active Granted
- 1985-05-30 IT IT20967/85A patent/IT1200492B/it active
- 1985-05-31 FR FR8508231A patent/FR2565353B1/fr not_active Expired
- 1985-05-31 JP JP60118680A patent/JPS60262067A/ja active Pending
- 1985-05-31 GB GB08513830A patent/GB2159965B/en not_active Expired

Also Published As

Publication number	Publication date
FI842193A0 (fi)	1984-05-31
GB2159965A (en)	1985-12-11
GB8513830D0 (en)	1985-07-03
GB2159965B (en)	1988-06-29
AU587578B2 (en)	1989-08-24
JPS60262067A (ja)	1985-12-25
FR2565353A1 (fr)	1985-12-06
IT8520967A0 (it)	1985-05-30
FR2565353B1 (fr)	1986-12-26
FI69932B (fi)	1985-12-31
FI69932C (fi)	1986-05-26
ZA853855B (en)	1986-03-26
DE3519390A1 (de)	1985-12-12
DE3519390C2 (it)	1990-10-25
AU4274985A (en)	1985-12-05
CA1262372A (en)	1989-10-17
BR8502572A (pt)	1986-02-04

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Legal Events

Date	Code	Title	Description
1999-10-27	TA	Fee payment date (situation as of event date), data collected since 19931001	Effective date: 19970529