FR2027062B1 - - Google Patents

Info

Publication number
FR2027062B1
FR2027062B1 FR696944882A FR6944882A FR2027062B1 FR 2027062 B1 FR2027062 B1 FR 2027062B1 FR 696944882 A FR696944882 A FR 696944882A FR 6944882 A FR6944882 A FR 6944882A FR 2027062 B1 FR2027062 B1 FR 2027062B1
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
FR696944882A
Other versions
FR2027062A1 (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.)
Texaco Development Corp
Original Assignee
Texaco Development Corp
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 Texaco Development Corp filed Critical Texaco Development Corp
Publication of FR2027062A1 publication Critical patent/FR2027062A1/fr
Application granted granted Critical
Publication of FR2027062B1 publication Critical patent/FR2027062B1/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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Multimedia (AREA)
  • Analogue/Digital Conversion (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Amplifiers (AREA)
FR696944882A 1968-12-24 1969-12-24 Expired FR2027062B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US78656968A 1968-12-24 1968-12-24

Publications (2)

Publication Number Publication Date
FR2027062A1 FR2027062A1 (fr) 1970-09-25
FR2027062B1 true FR2027062B1 (fr) 1973-08-10

Family

ID=25138960

Family Applications (1)

Application Number Title Priority Date Filing Date
FR696944882A Expired FR2027062B1 (fr) 1968-12-24 1969-12-24

Country Status (7)

Country Link
US (1) US3562744A (fr)
JP (1) JPS49374B1 (fr)
BR (1) BR6915409D0 (fr)
CH (1) CH512159A (fr)
FR (1) FR2027062B1 (fr)
GB (1) GB1266709A (fr)
NL (1) NL163077C (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2110758A5 (fr) * 1970-10-29 1972-06-02 Sercel Rech Const Elect
US3919657A (en) * 1973-11-12 1975-11-11 Texaco Inc Wide dynamic range amplifier system with slew rate control
CA1042097A (fr) * 1974-10-21 1978-11-07 Nippon Telegraph And Telephone Public Corporation Systeme de codage interbloc avec commande automatique de niveau du signal differentiel interbloc
US4064480A (en) * 1975-11-10 1977-12-20 Texaco Inc. Means and method for recording seismic signals
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
JPS6256811U (fr) * 1985-09-30 1987-04-08
DE102010040723B4 (de) * 2010-09-14 2016-01-21 Siemens Aktiengesellschaft Bereitstellung eines Wechselsignals

Also Published As

Publication number Publication date
DE1964138B2 (de) 1975-08-28
DE1964138A1 (de) 1970-07-02
NL6919344A (fr) 1970-06-26
CH512159A (de) 1971-08-31
GB1266709A (fr) 1972-03-15
NL163077C (nl) 1980-07-15
NL163077B (nl) 1980-02-15
BR6915409D0 (pt) 1973-01-04
FR2027062A1 (fr) 1970-09-25
US3562744A (en) 1971-02-09
JPS49374B1 (fr) 1974-01-07

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Legal Events

Date Code Title Description
JD Different final judgements