FR1549197A - - Google Patents

Info

Publication number
FR1549197A
FR1549197A FR1549197DA FR1549197A FR 1549197 A FR1549197 A FR 1549197A FR 1549197D A FR1549197D A FR 1549197DA FR 1549197 A FR1549197 A FR 1549197A
Authority
FR
France
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
Other languages
French (fr)
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 filed Critical
Application granted granted Critical
Publication of FR1549197A publication Critical patent/FR1549197A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
    • H03G3/3026—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being discontinuously variable, e.g. controlled by switching
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/24—Recording seismic data
    • G01V1/245—Amplitude control for seismic recording

Landscapes

  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Multimedia (AREA)
  • Acoustics & Sound (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
FR1549197D 1967-03-13 1967-03-13 Expired FR1549197A (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR98568 1967-03-13

Publications (1)

Publication Number Publication Date
FR1549197A true FR1549197A (xx) 1968-12-13

Family

ID=8626832

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1549197D Expired FR1549197A (xx) 1967-03-13 1967-03-13

Country Status (1)

Country Link
FR (1) FR1549197A (xx)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2004301A1 (xx) * 1968-03-20 1969-11-21 Western Electric Co
US3810031A (en) * 1971-05-19 1974-05-07 Commissariat Energie Atomique Integrated amplifying device having low drift and method of compensating for the drift of an amplifying device
FR2344178A1 (fr) * 1975-05-12 1977-10-07 Western Geophysical Co Dispositif amplificateur a echelonnement de gain
FR2373914A1 (fr) * 1976-12-10 1978-07-07 Geosource Inc Amplificateur a virgule flottante instantanee
US4158819A (en) * 1976-12-10 1979-06-19 Geosource Inc. Instantaneous floating point amplifier
US4357577A (en) * 1976-12-10 1982-11-02 Geosource Inc. Instantaneous floating point amplifier
US4747296A (en) * 1985-09-27 1988-05-31 Design Team Partners Electronic tonometer with baseline nulling system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2004301A1 (xx) * 1968-03-20 1969-11-21 Western Electric Co
US3810031A (en) * 1971-05-19 1974-05-07 Commissariat Energie Atomique Integrated amplifying device having low drift and method of compensating for the drift of an amplifying device
FR2344178A1 (fr) * 1975-05-12 1977-10-07 Western Geophysical Co Dispositif amplificateur a echelonnement de gain
FR2373914A1 (fr) * 1976-12-10 1978-07-07 Geosource Inc Amplificateur a virgule flottante instantanee
US4104596A (en) * 1976-12-10 1978-08-01 Geosource Inc. Instantaneous floating point amplifier
US4158819A (en) * 1976-12-10 1979-06-19 Geosource Inc. Instantaneous floating point amplifier
US4357577A (en) * 1976-12-10 1982-11-02 Geosource Inc. Instantaneous floating point amplifier
US4747296A (en) * 1985-09-27 1988-05-31 Design Team Partners Electronic tonometer with baseline nulling system

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Legal Events

Date Code Title Description
ST Notification of lapse