GB2123231B - Gain control of audio-amplifying systems - Google Patents

Gain control of audio-amplifying systems

Info

Publication number
GB2123231B
GB2123231B GB08315613A GB8315613A GB2123231B GB 2123231 B GB2123231 B GB 2123231B GB 08315613 A GB08315613 A GB 08315613A GB 8315613 A GB8315613 A GB 8315613A GB 2123231 B GB2123231 B GB 2123231B
Authority
GB
United Kingdom
Prior art keywords
audio
gain control
amplifying systems
amplifying
systems
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
GB08315613A
Other versions
GB8315613D0 (en
GB2123231A (en
Inventor
Paola Antoniazzi
Carlo Alberto Grilli
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.)
STMicroelectronics SRL
Original Assignee
ATES Componenti Elettronici SpA
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 ATES Componenti Elettronici SpA filed Critical ATES Componenti Elettronici SpA
Publication of GB8315613D0 publication Critical patent/GB8315613D0/en
Publication of GB2123231A publication Critical patent/GB2123231A/en
Application granted granted Critical
Publication of GB2123231B publication Critical patent/GB2123231B/en
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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/56—Modifications of input or output impedances, not otherwise provided for
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G11/00—Limiting amplitude; Limiting rate of change of amplitude ; Clipping in general

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Control Of Amplification And Gain Control (AREA)
GB08315613A 1982-06-17 1983-06-07 Gain control of audio-amplifying systems Expired GB2123231B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT21893/82A IT1190872B (en) 1982-06-17 1982-06-17 AUDIO AMPLIFICATION SYSTEM WITH INCREASE IN THE AVERAGE LISTENING POWER

Publications (3)

Publication Number Publication Date
GB8315613D0 GB8315613D0 (en) 1983-07-13
GB2123231A GB2123231A (en) 1984-01-25
GB2123231B true GB2123231B (en) 1986-04-16

Family

ID=11188326

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08315613A Expired GB2123231B (en) 1982-06-17 1983-06-07 Gain control of audio-amplifying systems

Country Status (5)

Country Link
JP (1) JPS595711A (en)
DE (1) DE3321293A1 (en)
FR (1) FR2529035A1 (en)
GB (1) GB2123231B (en)
IT (1) IT1190872B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1201797A (en) * 1983-01-20 1986-03-11 Frederick H.K. Rambow Circuit for controlling the magnitude of amplification of signals produced by a borehole televiewer
FR2594609B1 (en) * 1986-02-18 1988-04-29 Grenet Edouard DEVICE FOR AUTOMATIC CORRECTION OF SOUND VOLUME VARIATIONS OF A BROADCASTING OR TELEVISION RECEIVER
US5327101A (en) * 1993-07-02 1994-07-05 Ford Motor Company Distortion-free limiter for a power amplifier
US6133792A (en) * 1998-09-17 2000-10-17 Telefonakteibolaget Lm Ericsson Method and apparatus for preventing power amplifier saturation
US6828859B2 (en) * 2001-08-17 2004-12-07 Silicon Laboratories, Inc. Method and apparatus for protecting devices in an RF power amplifier
EP1499014B1 (en) * 2003-07-15 2010-03-17 STMicroelectronics S.r.l. A method for automatic gain control, for instance in a telecommunication system, device and computer program therefor
EP3930185A1 (en) * 2020-06-26 2021-12-29 NXP USA, Inc. Amplifier circuit with an output limiter

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1313261A (en) * 1961-11-15 1962-12-28 Thomson Houston Comp Francaise Improvements to control systems
GB1056265A (en) * 1962-10-15 1967-01-25 Shipton Electronics Ltd Improvements in or relating to automatic gain control circuits
CH462894A (en) * 1966-09-29 1968-09-30 Eresa S A Automatic gain adjustment device of an audio amplifier
BE742465A (en) * 1968-12-11 1970-05-14
US3770984A (en) * 1971-03-03 1973-11-06 Harris Intertype Corp Fast recovery low distortion limiter circuit
DE2403799B2 (en) * 1974-01-26 1979-07-26 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Amplifier circuit with automatic gain control
CA1034873A (en) * 1974-06-24 1978-07-18 Masahiro Chikatsu Limited circuit for recording amplifier
AT348590B (en) * 1975-09-26 1979-02-26 Grundig Emv CIRCUIT ARRANGEMENT TO DISCONNECT THE INFLUENCE OF SHORT INTERFERENCE PULSES WITH AUTOMATIC LEVEL CONTROL
GB1592575A (en) * 1976-09-15 1981-07-08 Siemens Ag Level-controlled amplifier or attenuator circuits
US4048573A (en) * 1976-10-15 1977-09-13 Mcintosh Laboratory, Incorporated Amplifier improvements for limiting clipping
JPS5515857U (en) * 1978-07-17 1980-01-31
US4233566A (en) * 1978-10-23 1980-11-11 Technical Audio Products Corporation Distortion free power limiting and clipping prevention circuit
GB2059202B (en) * 1979-09-14 1983-11-02 Plessey Co Ltd Digitally controlled wide range automatic gain control
DE3027715C2 (en) * 1980-07-19 1986-10-23 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Circuit arrangement for automatic control or limitation of the dynamics of signals

Also Published As

Publication number Publication date
GB8315613D0 (en) 1983-07-13
IT8221893A0 (en) 1982-06-17
FR2529035A1 (en) 1983-12-23
GB2123231A (en) 1984-01-25
DE3321293A1 (en) 1984-01-05
IT1190872B (en) 1988-02-24
JPS595711A (en) 1984-01-12

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20010607