CA938672A - Coupled inductance impedance measuring circuit with increased sensitivity and frequency independence - Google Patents
Coupled inductance impedance measuring circuit with increased sensitivity and frequency independenceInfo
- Publication number
- CA938672A CA938672A CA126116A CA126116A CA938672A CA 938672 A CA938672 A CA 938672A CA 126116 A CA126116 A CA 126116A CA 126116 A CA126116 A CA 126116A CA 938672 A CA938672 A CA 938672A
- Authority
- CA
- Canada
- Prior art keywords
- measuring circuit
- impedance measuring
- increased sensitivity
- coupled inductance
- inductance impedance
- 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
- 230000035945 sensitivity Effects 0.000 title 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R17/00—Measuring arrangements involving comparison with a reference value, e.g. bridge
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US8455470A | 1970-10-28 | 1970-10-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA938672A true CA938672A (en) | 1973-12-18 |
Family
ID=22185705
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA126116A Expired CA938672A (en) | 1970-10-28 | 1971-10-26 | Coupled inductance impedance measuring circuit with increased sensitivity and frequency independence |
Country Status (10)
Country | Link |
---|---|
US (1) | US3694741A (fr) |
JP (1) | JPS5423593B1 (fr) |
BE (1) | BE774541A (fr) |
CA (1) | CA938672A (fr) |
CH (1) | CH558534A (fr) |
DE (1) | DE2153121A1 (fr) |
FR (1) | FR2111890B1 (fr) |
GB (1) | GB1376152A (fr) |
NL (1) | NL7114890A (fr) |
SE (1) | SE371019B (fr) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4093915A (en) * | 1976-01-12 | 1978-06-06 | Setra Systems, Inc. | Capacitance measuring system |
DE3024241C2 (de) * | 1980-06-27 | 1984-03-08 | Günter Dr.techn. 4630 Bochum Schierjott | Schaltungsanordnung zum Eliminieren des Einflusses einer Phasenverschiebung |
US4931962A (en) * | 1988-05-13 | 1990-06-05 | Ade Corporation | Fixture and nonrepeatable error compensation system |
US4958129A (en) * | 1989-03-07 | 1990-09-18 | Ade Corporation | Prealigner probe |
US4918376A (en) * | 1989-03-07 | 1990-04-17 | Ade Corporation | A.C. capacitive gauging system |
US5102280A (en) * | 1989-03-07 | 1992-04-07 | Ade Corporation | Robot prealigner |
DE19843749A1 (de) * | 1998-08-03 | 2000-02-17 | Pepperl & Fuchs | Verfahren und Schaltungsanordnung zur Auswertung kleiner Kapazitätsänderungen |
ES2212851T3 (es) * | 1998-08-03 | 2004-08-01 | Pepperl + Fuchs Gmbh | Conmutador capacitivo de proximidad para la evaluacion de pequeños cambios de capacidad y procedimiento para ello. |
DE29915014U1 (de) | 1999-08-28 | 2000-04-06 | Pepperl & Fuchs GmbH, 68307 Mannheim | Kapazitiver Näherungsschalter |
DE19945330C2 (de) * | 1999-09-22 | 2002-10-31 | Sie Sensorik Ind Elektronik Gm | Verfahren zur Detektion und Auswertung kleiner Kapazitätsänderungen zur Umsetzung in ein Schaltsignal und kapazitiver Sensor hierzu |
-
1970
- 1970-10-28 US US84554A patent/US3694741A/en not_active Expired - Lifetime
-
1971
- 1971-10-25 DE DE19712153121 patent/DE2153121A1/de active Pending
- 1971-10-26 SE SE7113557A patent/SE371019B/xx unknown
- 1971-10-26 CA CA126116A patent/CA938672A/en not_active Expired
- 1971-10-27 FR FR7138636A patent/FR2111890B1/fr not_active Expired
- 1971-10-27 GB GB4990171A patent/GB1376152A/en not_active Expired
- 1971-10-27 CH CH1567571A patent/CH558534A/fr not_active IP Right Cessation
- 1971-10-27 BE BE774541A patent/BE774541A/fr unknown
- 1971-10-28 JP JP8618771A patent/JPS5423593B1/ja active Pending
- 1971-10-28 NL NL7114890A patent/NL7114890A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
JPS479692A (fr) | 1972-05-18 |
BE774541A (fr) | 1972-04-27 |
US3694741A (en) | 1972-09-26 |
NL7114890A (fr) | 1972-05-03 |
FR2111890B1 (fr) | 1975-08-29 |
FR2111890A1 (fr) | 1972-06-09 |
SE371019B (fr) | 1974-11-04 |
JPS5423593B1 (fr) | 1979-08-15 |
GB1376152A (en) | 1974-12-04 |
DE2153121A1 (de) | 1972-05-04 |
CH558534A (fr) | 1975-01-31 |
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