FR2278077A2 - Dispositif permettant de convertir le desequilibre d'un pont en variation de frequence - Google Patents

Dispositif permettant de convertir le desequilibre d'un pont en variation de frequence

Info

Publication number
FR2278077A2
FR2278077A2 FR7521529A FR7521529A FR2278077A2 FR 2278077 A2 FR2278077 A2 FR 2278077A2 FR 7521529 A FR7521529 A FR 7521529A FR 7521529 A FR7521529 A FR 7521529A FR 2278077 A2 FR2278077 A2 FR 2278077A2
Authority
FR
France
Prior art keywords
imbalance
bridge
converting
frequency variation
variation
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.)
Granted
Application number
FR7521529A
Other languages
English (en)
Other versions
FR2278077B2 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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.)
Filing date
Publication date
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of FR2278077A2 publication Critical patent/FR2278077A2/fr
Application granted granted Critical
Publication of FR2278077B2 publication Critical patent/FR2278077B2/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • G01R17/02—Arrangements in which the value to be measured is automatically compared with a reference value

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
  • Amplifiers (AREA)
FR7521529A 1974-07-10 1975-07-09 Dispositif permettant de convertir le desequilibre d'un pont en variation de frequence Granted FR2278077A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2433080A DE2433080C2 (de) 1974-07-10 1974-07-10 Schaltungsanordnung zur Umwandlung einer Brückenverstimmung in eine Frequenzänderung

Publications (2)

Publication Number Publication Date
FR2278077A2 true FR2278077A2 (fr) 1976-02-06
FR2278077B2 FR2278077B2 (fr) 1978-09-22

Family

ID=5920147

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7521529A Granted FR2278077A2 (fr) 1974-07-10 1975-07-09 Dispositif permettant de convertir le desequilibre d'un pont en variation de frequence

Country Status (7)

Country Link
US (1) US4006430A (fr)
JP (1) JPS5947483B2 (fr)
DE (1) DE2433080C2 (fr)
FR (1) FR2278077A2 (fr)
GB (1) GB1510869A (fr)
IT (1) IT1050693B (fr)
SE (1) SE407111B (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3000291C2 (de) * 1980-01-05 1982-06-09 Philips Patentverwaltung Gmbh, 2000 Hamburg Schaltungsanordnung zur Umwandlung einer Widerstandsänderung in eine Frequenzänderung
US4408169A (en) * 1981-05-18 1983-10-04 The John Hopkins University Frequency encoding closed loop circuit with transducer
US4391146A (en) * 1981-06-01 1983-07-05 Rosemount Inc. Parallel T impedance measurement circuit for use with variable impedance sensor
US4493693A (en) * 1982-07-30 1985-01-15 Baxter Travenol Laboratories, Inc. Trans-membrane pressure monitoring system
FR2553885B1 (fr) * 1983-10-21 1986-01-31 Crouzet Badin Sa Dispositif de mesure de pression
US4987782A (en) * 1989-10-03 1991-01-29 Allied-Signal Inc. Capacitive pressure transducer system
DE4114592A1 (de) * 1991-05-03 1992-11-05 Licentia Gmbh Photodetektoranordnung
DE4114489A1 (de) * 1991-05-03 1992-11-05 Licentia Gmbh Photodetektoranordnung
AU665470B2 (en) * 1992-12-04 1996-01-04 Doble Engineering Company Impedance measuring
US5384554A (en) * 1993-12-08 1995-01-24 Calcomp Inc. Voltage controlled oscillator circuit employing integrated circuit component ratios
WO1997018624A1 (fr) * 1995-11-15 1997-05-22 Takeshi Ikeda Modulateur fm
WO1997018625A1 (fr) * 1995-11-16 1997-05-22 Takeshi Ikeda Modulateur fm
US6246207B1 (en) * 1998-06-26 2001-06-12 A. O. Smith Corporation Method and apparatus for controlling an induction motor
DE102011085555A1 (de) 2011-11-02 2013-05-02 Robert Bosch Gmbh Variable Widerstandsanordnung, Messbrückenschaltung und Verfahren zum Kalibrieren einer Messbrückenschaltung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3536997A (en) * 1968-10-11 1970-10-27 Hickok Electrical Instr Co The Digital ohmmeter with modified wheatstone bridge
DE2214114C3 (de) * 1972-03-23 1974-12-05 Philips Patentverwaltung Gmbh, 2000 Hamburg Schaltungsanordnung zur Umwandlung einer Verstimmung einer Widerstandsbriicke in eine dazu proportionale Frequenzänderung eines RC-Oszillators

Also Published As

Publication number Publication date
JPS5132159A (en) 1976-03-18
SE407111B (sv) 1979-03-12
JPS5947483B2 (ja) 1984-11-19
SE7507736L (sv) 1976-01-12
US4006430A (en) 1977-02-01
IT1050693B (it) 1981-03-20
FR2278077B2 (fr) 1978-09-22
DE2433080C2 (de) 1983-09-29
DE2433080A1 (de) 1976-01-22
GB1510869A (en) 1978-05-17

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