DE3382614D1 - Kondensator-ueberwachungsschaltung. - Google Patents
Kondensator-ueberwachungsschaltung.Info
- Publication number
- DE3382614D1 DE3382614D1 DE8383300964T DE3382614T DE3382614D1 DE 3382614 D1 DE3382614 D1 DE 3382614D1 DE 8383300964 T DE8383300964 T DE 8383300964T DE 3382614 T DE3382614 T DE 3382614T DE 3382614 D1 DE3382614 D1 DE 3382614D1
- Authority
- DE
- Germany
- Prior art keywords
- capacitor
- measuring
- voltages
- resistance
- monitoring circuit
- 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 - Fee Related
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
- G01N27/223—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance for determining moisture content, e.g. humidity
- G01N27/225—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance for determining moisture content, e.g. humidity by using hygroscopic materials
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/64—Testing of capacitors
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Immunology (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Health & Medical Sciences (AREA)
- Electrochemistry (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Fire-Detection Mechanisms (AREA)
- Interface Circuits In Exchanges (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/357,235 US4431962A (en) | 1982-03-11 | 1982-03-11 | Capacitor monitoring by single resistor adjustment |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3382614D1 true DE3382614D1 (de) | 1992-10-08 |
DE3382614T2 DE3382614T2 (de) | 1993-02-18 |
Family
ID=23404819
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8383300964T Expired - Fee Related DE3382614T2 (de) | 1982-03-11 | 1983-02-24 | Kondensator-ueberwachungsschaltung. |
Country Status (6)
Country | Link |
---|---|
US (1) | US4431962A (de) |
EP (1) | EP0088561B1 (de) |
JP (1) | JPS58167973A (de) |
AT (1) | ATE80228T1 (de) |
CA (1) | CA1197994A (de) |
DE (1) | DE3382614T2 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60106170U (ja) * | 1983-12-23 | 1985-07-19 | 愛三工業株式会社 | 比誘電率変化検出装置 |
US4558595A (en) * | 1985-03-29 | 1985-12-17 | Honeywell Inc. | Capacitance monitoring bridge circuit for an enthalpy responsive device |
US4743836A (en) * | 1985-12-06 | 1988-05-10 | United Technologies Corporation | Capacitive circuit for measuring a parameter having a linear output voltage |
DE4001814A1 (de) * | 1990-01-23 | 1991-07-25 | Vdo Schindling | Auswerteschaltung fuer einen kapazitiven sensor |
JP3233791B2 (ja) * | 1994-08-25 | 2001-11-26 | 株式会社山武 | 差動容量反転積分器及びこれを用いた静電容量変化量検出装置 |
DE102004006020A1 (de) * | 2004-02-06 | 2005-08-25 | E + E Elektronik Ges.M.B.H. | Schaltungsanordnung zur kapazitiven Feuchtemessung und Verfahren zum Betrieb derselben |
JP5033489B2 (ja) * | 2007-06-11 | 2012-09-26 | 三菱自動車工業株式会社 | 静電容量変化検出回路 |
DE102007042500B4 (de) * | 2007-09-07 | 2022-05-05 | Innovative Sensor Technology Ist Ag | Vorrichtung zur Bestimmung und/oder Überwachung einer Prozessgröße |
CH699753A1 (de) * | 2008-10-16 | 2010-04-30 | Uster Technologies Ag | Vorrichtung und verfahren zum ausmessen einer kapazität. |
JP5770596B2 (ja) * | 2011-10-21 | 2015-08-26 | 旭化成エレクトロニクス株式会社 | 静電容量検出回路、およびタッチセンサの信号処理回路 |
RU2697715C1 (ru) * | 2018-12-24 | 2019-08-19 | федеральное государственное бюджетное образовательное учреждение высшего образования "Ставропольский государственный аграрный университет" | Микроконтроллерное измерительное устройство емкости для встраиваемых вычислительных систем |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3083565A (en) * | 1958-06-20 | 1963-04-02 | Bailey Meter Co | Dewpoint hygrometer |
US3135916A (en) * | 1960-05-18 | 1964-06-02 | Itt | Apparatus for measuring small capacitance values independent of stray capacitance |
US3177427A (en) * | 1962-02-26 | 1965-04-06 | Phillips Petroleum Co | Capacitance bridge compensating circuit utilizing voltage sensitive capacitors |
US3221247A (en) * | 1963-02-08 | 1965-11-30 | Simmonds Precision Products | Solid state capacity servo measuring system utilizing inductive feedback |
US3350941A (en) * | 1965-05-20 | 1967-11-07 | Johnson Service Co | Humidity sensing element |
US3802268A (en) * | 1971-05-06 | 1974-04-09 | Johnson Service Co | Capacitance humidity sensing element |
JPS5061266A (de) * | 1973-09-29 | 1975-05-26 | ||
GB1491201A (en) * | 1974-10-22 | 1977-11-09 | Wolfendale P | Measurement of impedance ratios |
GB2020434B (en) * | 1978-05-02 | 1982-09-29 | Matsushita Electric Ind Co Ltd | Apparatus for humidity detection |
GB2058364B (en) * | 1979-09-01 | 1983-03-23 | Ferranti Ltd | Capacitance measuring apparatus |
-
1982
- 1982-03-11 US US06/357,235 patent/US4431962A/en not_active Expired - Fee Related
-
1983
- 1983-01-14 CA CA000419491A patent/CA1197994A/en not_active Expired
- 1983-02-24 AT AT83300964T patent/ATE80228T1/de not_active IP Right Cessation
- 1983-02-24 DE DE8383300964T patent/DE3382614T2/de not_active Expired - Fee Related
- 1983-02-24 EP EP83300964A patent/EP0088561B1/de not_active Expired - Lifetime
- 1983-03-11 JP JP58039327A patent/JPS58167973A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPH0549953B2 (de) | 1993-07-27 |
JPS58167973A (ja) | 1983-10-04 |
EP0088561B1 (de) | 1992-09-02 |
EP0088561A1 (de) | 1983-09-14 |
DE3382614T2 (de) | 1993-02-18 |
CA1197994A (en) | 1985-12-17 |
ATE80228T1 (de) | 1992-09-15 |
US4431962A (en) | 1984-02-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |