JPS49374B1 - - Google Patents

Info

Publication number
JPS49374B1
JPS49374B1 JP44103498A JP10349869A JPS49374B1 JP S49374 B1 JPS49374 B1 JP S49374B1 JP 44103498 A JP44103498 A JP 44103498A JP 10349869 A JP10349869 A JP 10349869A JP S49374 B1 JPS49374 B1 JP S49374B1
Authority
JP
Japan
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.)
Pending
Application number
JP44103498A
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
Publication of JPS49374B1 publication Critical patent/JPS49374B1/ja
Pending 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)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Geophysics (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Analogue/Digital Conversion (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Amplifiers (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
JP44103498A 1968-12-24 1969-12-24 Pending JPS49374B1 (ja)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
JPS49374B1 true JPS49374B1 (ja) 1974-01-07

Family

ID=25138960

Family Applications (1)

Application Number Title Priority Date Filing Date
JP44103498A Pending JPS49374B1 (ja) 1968-12-24 1969-12-24

Country Status (7)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6256811U (ja) * 1985-09-30 1987-04-08

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2110758A5 (ja) * 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 (en) * 1974-10-21 1978-11-07 Nippon Telegraph And Telephone Public Corporation Interframe coding system with automatic control of magnitude of interframe difference signal
US4064480A (en) * 1975-11-10 1977-12-20 Texaco Inc. Means and method for recording seismic signals
US4357577A (en) * 1976-12-10 1982-11-02 Geosource Inc. Instantaneous floating point amplifier
US4158819A (en) * 1976-12-10 1979-06-19 Geosource Inc. Instantaneous floating point amplifier
DE102010040723B4 (de) * 2010-09-14 2016-01-21 Siemens Aktiengesellschaft Bereitstellung eines Wechselsignals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6256811U (ja) * 1985-09-30 1987-04-08

Also Published As

Publication number Publication date
NL163077B (nl) 1980-02-15
DE1964138A1 (de) 1970-07-02
NL6919344A (ja) 1970-06-26
BR6915409D0 (pt) 1973-01-04
US3562744A (en) 1971-02-09
NL163077C (nl) 1980-07-15
FR2027062A1 (ja) 1970-09-25
DE1964138B2 (de) 1975-08-28
FR2027062B1 (ja) 1973-08-10
GB1266709A (ja) 1972-03-15
CH512159A (de) 1971-08-31

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