FR1346364A - Dispositif de mesure du rapport d'amplitude de deux signaux électriques - Google Patents

Dispositif de mesure du rapport d'amplitude de deux signaux électriques

Info

Publication number
FR1346364A
FR1346364A FR914358A FR914358A FR1346364A FR 1346364 A FR1346364 A FR 1346364A FR 914358 A FR914358 A FR 914358A FR 914358 A FR914358 A FR 914358A FR 1346364 A FR1346364 A FR 1346364A
Authority
FR
France
Prior art keywords
measuring
electrical signals
amplitude ratio
amplitude
ratio
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
Application number
FR914358A
Other languages
English (en)
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.)
Compteurs Schlumberger SA
Original Assignee
Compteurs Schlumberger SA
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 Compteurs Schlumberger SA filed Critical Compteurs Schlumberger SA
Priority to FR914358A priority Critical patent/FR1346364A/fr
Priority to DE19631448768 priority patent/DE1448768A1/de
Priority to US321001A priority patent/US3329821A/en
Application granted granted Critical
Publication of FR1346364A publication Critical patent/FR1346364A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/16—Arrangements for performing computing operations, e.g. operational amplifiers for multiplication or division
    • G06G7/163—Arrangements for performing computing operations, e.g. operational amplifiers for multiplication or division using a variable impedance controlled by one of the input signals, variable amplification or transfer function
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
    • G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
    • G01N21/538—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke for determining atmospheric attenuation and visibility

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Computer Hardware Design (AREA)
  • Software Systems (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
FR914358A 1962-11-05 1962-11-05 Dispositif de mesure du rapport d'amplitude de deux signaux électriques Expired FR1346364A (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR914358A FR1346364A (fr) 1962-11-05 1962-11-05 Dispositif de mesure du rapport d'amplitude de deux signaux électriques
DE19631448768 DE1448768A1 (de) 1962-11-05 1963-07-24 Anordnung zur Messung des Amplitudenverhaeltnisses von zwei elektrischen Signalen
US321001A US3329821A (en) 1962-11-05 1963-11-04 Method and device for measuring the amplitude ratio of two electric signals, more particularly for the measuring of the density of the atmosphere

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR914358A FR1346364A (fr) 1962-11-05 1962-11-05 Dispositif de mesure du rapport d'amplitude de deux signaux électriques

Publications (1)

Publication Number Publication Date
FR1346364A true FR1346364A (fr) 1963-12-20

Family

ID=8790102

Family Applications (1)

Application Number Title Priority Date Filing Date
FR914358A Expired FR1346364A (fr) 1962-11-05 1962-11-05 Dispositif de mesure du rapport d'amplitude de deux signaux électriques

Country Status (3)

Country Link
US (1) US3329821A (fr)
DE (1) DE1448768A1 (fr)
FR (1) FR1346364A (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3411012A (en) * 1964-09-01 1968-11-12 Ca Atomic Energy Ltd Infrared absorption device for detecting small changes in the isotopic purity of water
GB1131852A (en) * 1965-03-04 1968-10-30 Joyce Loebl And Company Ltd Improved integrating sphere colorimeter
US3446558A (en) * 1965-12-08 1969-05-27 Nasa Method for measuring the characteristics of a gas
US3411006A (en) * 1966-02-14 1968-11-12 Bausch & Lomb Gain control system comprising two motors
US3512001A (en) * 1966-09-22 1970-05-12 Durrum Instr System for measuring differential absorption in which the transducer circuit gain is varied
US3660670A (en) * 1970-12-21 1972-05-02 Eastman Kodak Co Document detecting and counting apparatus
US4024767A (en) * 1975-06-02 1977-05-24 Beckman Instruments, Inc. Set point adjust mechanism for process controllers
US3955096A (en) * 1975-06-19 1976-05-04 E. I. Du Pont De Nemours And Company Implicit ratio computer for sequential signals
FR2393295A1 (fr) * 1977-05-31 1978-12-29 Snecma Appareil de mesure du pouvoir transmissif de l'atmosphere
US4216498A (en) * 1978-09-12 1980-08-05 Sri International Visibility monitor employing television camera
FR2584497B1 (fr) * 1985-07-04 1988-07-08 Jaeger Procede et dispositif pour la detection du brouillard et son application a l'aide a la conduite d'un vehicule.
DE3675702D1 (de) * 1985-07-04 1991-01-03 Jaeger Vorrichtung zum erfassen von fremden substanzen durch eine trennwand und fahrhilfssystem fuer fahrzeuge oder luftfahrzeuge.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2790146A (en) * 1952-04-02 1957-04-23 Honeywell Regulator Co Voltage ratio measuring apparatus
US2960910A (en) * 1957-06-07 1960-11-22 Technicon Instr Apparatus for visually indicating or recording numerical values of constituents of fluids under analysis
FR1257697A (fr) * 1960-02-22 1961-04-07 Compteurs Comp D Perfectionnements à la mesure de la densité moyenne de l'atmosphère
US3098194A (en) * 1961-10-16 1963-07-16 Pat L Clemens Automatic a.-c. voltage ratio controller

Also Published As

Publication number Publication date
US3329821A (en) 1967-07-04
DE1448768A1 (de) 1968-11-21

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