IL66030A - Impedance measurement circuit - Google Patents
Impedance measurement circuitInfo
- Publication number
- IL66030A IL66030A IL66030A IL6603082A IL66030A IL 66030 A IL66030 A IL 66030A IL 66030 A IL66030 A IL 66030A IL 6603082 A IL6603082 A IL 6603082A IL 66030 A IL66030 A IL 66030A
- Authority
- IL
- Israel
- Prior art keywords
- measurement circuit
- impedance measurement
- impedance
- circuit
- measurement
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/12—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in capacitance, i.e. electric circuits therefor
- G01L9/125—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in capacitance, i.e. electric circuits therefor with temperature compensating means
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/269,415 US4391146A (en) | 1981-06-01 | 1981-06-01 | Parallel T impedance measurement circuit for use with variable impedance sensor |
Publications (2)
Publication Number | Publication Date |
---|---|
IL66030A0 IL66030A0 (en) | 1982-09-30 |
IL66030A true IL66030A (en) | 1985-02-28 |
Family
ID=23027142
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IL66030A IL66030A (en) | 1981-06-01 | 1982-06-10 | Impedance measurement circuit |
Country Status (9)
Country | Link |
---|---|
US (1) | US4391146A (xx) |
EP (1) | EP0079955B1 (xx) |
JP (1) | JPH0634020B2 (xx) |
BR (1) | BR8207720A (xx) |
CA (1) | CA1177121A (xx) |
DE (1) | DE3280117D1 (xx) |
GB (1) | GB2118727B (xx) |
IL (1) | IL66030A (xx) |
WO (1) | WO1982004317A1 (xx) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4519253A (en) * | 1983-04-29 | 1985-05-28 | Rosemount Inc. | Reactance measurement circuit with enhanced linearity |
JPS6165114A (ja) * | 1984-09-06 | 1986-04-03 | Yokogawa Hokushin Electric Corp | 容量式変換装置 |
US5455565A (en) * | 1993-11-08 | 1995-10-03 | Ivac Corporation | Fluid monitor system and method using a resonator |
US6366099B1 (en) | 1999-12-21 | 2002-04-02 | Conrad Technologies, Inc. | Differential capacitance sampler |
AUPQ663600A0 (en) * | 2000-04-03 | 2000-05-04 | Accent Hydroponics Pty Ltd | Electrical conductivity measurement circuit |
KR100624365B1 (ko) * | 2004-12-01 | 2006-09-18 | 주식회사 파워트론 | 축전지셀 단자전압 및 내부 임피던스 측정 회로 |
US7234357B2 (en) * | 2004-10-18 | 2007-06-26 | Silverbrook Research Pty Ltd | Wafer bonded pressure sensor |
DE102006011239B3 (de) * | 2006-03-10 | 2007-10-11 | Infineon Technologies Ag | Sensorschaltung zum Messen einer Messgröße |
US8299681B2 (en) | 2009-03-06 | 2012-10-30 | Life Services, LLC | Remotely adjustable reactive and resistive electrical elements and method |
US9500727B2 (en) | 2012-04-20 | 2016-11-22 | Regents Of The University Of Minnesota | System and method for control of RF circuits for use with an MRI system |
TWI618369B (zh) * | 2012-05-10 | 2018-03-11 | 通路實業集團國際公司 | 測量無線感測器中之可變阻抗元件的系統與方法 |
US10191128B2 (en) | 2014-02-12 | 2019-01-29 | Life Services, LLC | Device and method for loops-over-loops MRI coils |
Family Cites Families (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3012192A (en) * | 1961-12-05 | Electric system | ||
US2106785A (en) * | 1936-05-23 | 1938-02-01 | Bell Telephone Labor Inc | Electric filter |
US2173427A (en) * | 1937-08-30 | 1939-09-19 | Gen Radio Co | Electric oscillator |
US2319965A (en) * | 1941-06-14 | 1943-05-25 | Bell Telephone Labor Inc | Variable frequency bridge stabilized oscillator |
US2341067A (en) * | 1941-06-14 | 1944-02-08 | Bell Telephone Labor Inc | Variable frequency bridge stabilized oscillator |
US2423505A (en) * | 1943-08-09 | 1947-07-08 | Rca Corp | Bridge stabilized oscillator |
US2466904A (en) * | 1945-02-13 | 1949-04-12 | Bell Telephone Labor Inc | Stabilized oscillator |
US2441567A (en) * | 1945-02-13 | 1948-05-18 | Bell Telephone Labor Inc | Variable frequency oscillator |
US2439245A (en) * | 1945-06-02 | 1948-04-06 | Philco Corp | Resistance-capacitance type oscillator |
US2586167A (en) * | 1945-07-03 | 1952-02-19 | Us Navy | Oscillator |
US2568868A (en) * | 1946-11-15 | 1951-09-25 | Rca Corp | Oscillation generator |
US2506723A (en) * | 1947-12-31 | 1950-05-09 | Stromberg Carlson Co | Electrical generation of musical tones |
US2827569A (en) * | 1956-01-18 | 1958-03-18 | Phillip L Jessen | Stabilized oscillator |
US2927282A (en) * | 1958-04-24 | 1960-03-01 | Gardberg Joseph | Oscillator and filter circuits |
US2963642A (en) * | 1958-08-01 | 1960-12-06 | Shell Oil Co | Method and apparatus for determining directional dielectric anisotropy in solids |
US3120633A (en) * | 1960-02-01 | 1964-02-04 | Gen Electric | Series inverter circuit having controlled rectifiers with power diodes in reverse parallel connection |
US3049675A (en) * | 1960-12-30 | 1962-08-14 | Bell Telephone Labor Inc | Method and apparatus for synchronizing oscillators |
US3209283A (en) * | 1961-11-13 | 1965-09-28 | Ibm | Gated oscillator with variable amplitude control |
US3445835A (en) * | 1965-11-09 | 1969-05-20 | R F Controls Inc | Capacitive proximity sensor |
US3317854A (en) * | 1966-05-10 | 1967-05-02 | Bendix Corp | Bridge-t oscillator circuit with gain control |
US3535430A (en) * | 1967-01-23 | 1970-10-20 | Motorola Inc | Transistor frequency glide control for musical twin-t oscillator tone generators |
US3446075A (en) * | 1967-02-01 | 1969-05-27 | Nat Res Corp | Apparatus for absolute pressure measurement |
US3555448A (en) * | 1969-06-03 | 1971-01-12 | Data Research Corp | Transducer controlled variable frequency wien-bridge oscillator |
US3639832A (en) * | 1969-12-11 | 1972-02-01 | Ema Dorries Gmbh | Electrical bridge apparatus for and method of measuring mechanical forces by magnetoelastic members |
US3671857A (en) * | 1970-04-29 | 1972-06-20 | Karlis Alfredovich Bergmanis | Device for measuring permittivity of materials |
US3815050A (en) * | 1971-02-05 | 1974-06-04 | Microsystems Int Ltd | Temperature stable tone generator |
US3746975A (en) * | 1971-08-20 | 1973-07-17 | Drexelbrook Controls | Measuring characteristics of materials by using susceptive and conductive components of admittance |
US3800242A (en) * | 1972-01-28 | 1974-03-26 | C Zimmerman | Temperature compensated liquid metering system and method |
US3793585A (en) * | 1972-02-02 | 1974-02-19 | M Wilska | Moisture monitor having a resistor between sensing capacitor and oscillator tuned input to improve oscillator response |
US3793596A (en) * | 1972-06-01 | 1974-02-19 | Westinghouse Air Brake Co | Vital level detector and {37 and{38 {0 gate circuit arrangement employing a twin-tee oscillator |
US3859575A (en) * | 1974-02-11 | 1975-01-07 | Lee Shih Ying | Variable capacitance sensor |
DE2433080C2 (de) * | 1974-07-10 | 1983-09-29 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Schaltungsanordnung zur Umwandlung einer Brückenverstimmung in eine Frequenzänderung |
US4091683A (en) * | 1976-09-27 | 1978-05-30 | Panex, Inc. | Single channel electrical comparative measuring system |
JPS6139330Y2 (xx) * | 1977-06-30 | 1986-11-11 | ||
US4136315A (en) * | 1977-07-27 | 1979-01-23 | Westinghouse Air Brake Company | Low and high frequency oscillators having common voltage regulator circuit |
US4389646A (en) * | 1980-04-30 | 1983-06-21 | Fuji Electric Co. Ltd. | Displacement converting circuit arrangement |
-
1981
- 1981-06-01 US US06/269,415 patent/US4391146A/en not_active Expired - Lifetime
-
1982
- 1982-05-27 GB GB08227765A patent/GB2118727B/en not_active Expired
- 1982-05-27 JP JP57502157A patent/JPH0634020B2/ja not_active Expired - Lifetime
- 1982-05-27 BR BR8207720A patent/BR8207720A/pt not_active IP Right Cessation
- 1982-05-27 WO PCT/US1982/000730 patent/WO1982004317A1/en active IP Right Grant
- 1982-05-27 EP EP82902141A patent/EP0079955B1/en not_active Expired
- 1982-05-27 DE DE8282902141T patent/DE3280117D1/de not_active Expired - Fee Related
- 1982-05-31 CA CA000404071A patent/CA1177121A/en not_active Expired
- 1982-06-10 IL IL66030A patent/IL66030A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
US4391146A (en) | 1983-07-05 |
IL66030A0 (en) | 1982-09-30 |
EP0079955A1 (en) | 1983-06-01 |
WO1982004317A1 (en) | 1982-12-09 |
EP0079955A4 (en) | 1987-01-10 |
DE3280117D1 (de) | 1990-04-05 |
CA1177121A (en) | 1984-10-30 |
JPH0634020B2 (ja) | 1994-05-02 |
GB2118727B (en) | 1985-05-01 |
JPS58500872A (ja) | 1983-05-26 |
GB2118727A (en) | 1983-11-02 |
BR8207720A (pt) | 1983-05-10 |
EP0079955B1 (en) | 1990-02-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3279140D1 (en) | Amplifier circuit | |
DE3467459D1 (en) | An impedance element | |
JPS55117974A (en) | Impedance measuring circuit | |
GB2092851B (en) | Signal processing circuit | |
GB8513677D0 (en) | Measuring circuit | |
JPS57138256A (en) | Substriber line circuit | |
IE823101L (en) | Test circuit | |
AU554062B2 (en) | Decadic measuring circuit | |
JPS57101770A (en) | Time-delayed measuring circuit | |
GB2103027B (en) | Electrical probe | |
GB2118727B (en) | Impedance measurement circuit | |
GB2106255B (en) | Reactance measurement circuit | |
GB2079939B (en) | Ultrasonic measuring circuits | |
GB2100543B (en) | Chatter-prevention circuit | |
GB2107144B (en) | An electronic impedance circuit | |
GB8430078D0 (en) | Electrical measuring | |
JPS57139668A (en) | Dielectric constant indicator | |
GB2100495B (en) | Signal processing circuit | |
DE3460831D1 (en) | Capacitance measuring circuit | |
GB2138576B (en) | Impedance sensor | |
DE3277434D1 (en) | Reference time-detecting circuit | |
GB2094092B (en) | Signal processing circuit | |
DE3270882D1 (en) | Current probe signal processing circuit | |
JPS57154699A (en) | Sample-holding circuit | |
HK50087A (en) | Line circuit testing |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
KB | Patent renewed | ||
RH | Patent void |