JPS5666915A - Method and circuit for varying gain of amplifier - Google Patents

Method and circuit for varying gain of amplifier

Info

Publication number
JPS5666915A
JPS5666915A JP13364180A JP13364180A JPS5666915A JP S5666915 A JPS5666915 A JP S5666915A JP 13364180 A JP13364180 A JP 13364180A JP 13364180 A JP13364180 A JP 13364180A JP S5666915 A JPS5666915 A JP S5666915A
Authority
JP
Japan
Prior art keywords
amplifier
circuit
varying gain
gain
varying
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.)
Pending
Application number
JP13364180A
Other languages
Japanese (ja)
Inventor
Buraun Ururitsuhi
Denisu Ueeruzu Shii
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.)
Krautkraemer GmbH
Original Assignee
Krautkraemer GmbH
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 Krautkraemer GmbH filed Critical Krautkraemer GmbH
Publication of JPS5666915A publication Critical patent/JPS5666915A/en
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
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/005—Circuits for altering the indicating characteristic, e.g. making it non-linear

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Amplifiers (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
JP13364180A 1979-10-17 1980-09-25 Method and circuit for varying gain of amplifier Pending JPS5666915A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792941961 DE2941961A1 (en) 1979-10-17 1979-10-17 METHOD FOR CHANGING THE GAIN FACTOR DEPENDING ON THE SIGNAL VOLTAGE

Publications (1)

Publication Number Publication Date
JPS5666915A true JPS5666915A (en) 1981-06-05

Family

ID=6083668

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13364180A Pending JPS5666915A (en) 1979-10-17 1980-09-25 Method and circuit for varying gain of amplifier

Country Status (4)

Country Link
JP (1) JPS5666915A (en)
DE (1) DE2941961A1 (en)
FR (1) FR2468254A1 (en)
GB (1) GB2060963A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02100406A (en) * 1988-10-07 1990-04-12 Hitachi Ltd Variable gain amplifying circuit
JP2013185995A (en) * 2012-03-08 2013-09-19 Mitsutoyo Corp Surface quality measuring instrument, and control device and adjustment method for surface quality measuring instrument
US9709817B2 (en) 2015-12-07 2017-07-18 Oakley, Inc. Eyewear retention devices and methods
US9717631B2 (en) 2012-08-31 2017-08-01 Oakley, Inc. Eyewear having multiple ventilation states
US10156734B2 (en) 2015-12-08 2018-12-18 Oakley, Inc. Eyewear traction devices and methods
US10274748B2 (en) 2014-03-27 2019-04-30 Oakley, Inc. Mounting mechanism for eyewear
US10359642B2 (en) 2016-04-22 2019-07-23 Oakley, Inc. Mounting mechanism for eyewear
US10687981B2 (en) 2015-10-09 2020-06-23 Oakley, Inc. Headworn supports with passive venting and removable lens

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3227521C2 (en) * 1982-07-23 1984-11-22 Krautkrämer GmbH, 5000 Köln Method and device for non-destructive testing of materials using the ultrasonic pulse reflection method
IT1183370B (en) * 1984-02-21 1987-10-22 Mine Safety Appliances Co SCONTINUTTA'SINGOLA LINEARIZATION CIRCUIT

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2529012C3 (en) * 1975-06-28 1980-07-03 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Circuit for automatic dynamic compression or expansion
DE2619192A1 (en) * 1976-04-30 1977-11-17 Licentia Gmbh CIRCUIT FOR AUTOMATIC DYNAMIC COMPRESSION OR EXPANSION
DE2812431A1 (en) * 1978-03-22 1979-09-27 Licentia Gmbh AMPLIFIER WITH CHANGEABLE TRANSMISSION MEASUREMENT
DD140100A1 (en) * 1978-11-27 1980-02-06 Ralph Altmann CIRCUIT ARRANGEMENT FOR CONTROLLING A REINFORCEMENT

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02100406A (en) * 1988-10-07 1990-04-12 Hitachi Ltd Variable gain amplifying circuit
JP2013185995A (en) * 2012-03-08 2013-09-19 Mitsutoyo Corp Surface quality measuring instrument, and control device and adjustment method for surface quality measuring instrument
US9717631B2 (en) 2012-08-31 2017-08-01 Oakley, Inc. Eyewear having multiple ventilation states
US10335317B2 (en) 2012-08-31 2019-07-02 Oakley, Inc. Eyewear having multiple ventilation states
US10274748B2 (en) 2014-03-27 2019-04-30 Oakley, Inc. Mounting mechanism for eyewear
US10687981B2 (en) 2015-10-09 2020-06-23 Oakley, Inc. Headworn supports with passive venting and removable lens
US9709817B2 (en) 2015-12-07 2017-07-18 Oakley, Inc. Eyewear retention devices and methods
US10156734B2 (en) 2015-12-08 2018-12-18 Oakley, Inc. Eyewear traction devices and methods
US10359642B2 (en) 2016-04-22 2019-07-23 Oakley, Inc. Mounting mechanism for eyewear

Also Published As

Publication number Publication date
FR2468254A1 (en) 1981-04-30
GB2060963A (en) 1981-05-07
DE2941961A1 (en) 1981-04-30

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