IT1190872B - Sistema di amplificazione audio con incremento della potenza media di ascolto - Google Patents

Sistema di amplificazione audio con incremento della potenza media di ascolto

Info

Publication number
IT1190872B
IT1190872B IT21893/82A IT2189382A IT1190872B IT 1190872 B IT1190872 B IT 1190872B IT 21893/82 A IT21893/82 A IT 21893/82A IT 2189382 A IT2189382 A IT 2189382A IT 1190872 B IT1190872 B IT 1190872B
Authority
IT
Italy
Prior art keywords
increase
amplification system
audio amplification
average listening
listening power
Prior art date
Application number
IT21893/82A
Other languages
English (en)
Other versions
IT8221893A0 (it
Inventor
Paolo Antoniazzi
Carlo Alberto Grilli
Original Assignee
Sgs Microelettronica 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 Sgs Microelettronica Spa filed Critical Sgs Microelettronica Spa
Priority to IT21893/82A priority Critical patent/IT1190872B/it
Publication of IT8221893A0 publication Critical patent/IT8221893A0/it
Priority to GB08315613A priority patent/GB2123231B/en
Priority to DE19833321293 priority patent/DE3321293A1/de
Priority to JP58105961A priority patent/JPS595711A/ja
Priority to FR8310097A priority patent/FR2529035A1/fr
Application granted granted Critical
Publication of IT1190872B publication Critical patent/IT1190872B/it

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)
  • Control Of Amplification And Gain Control (AREA)
  • Amplifiers (AREA)
IT21893/82A 1982-06-17 1982-06-17 Sistema di amplificazione audio con incremento della potenza media di ascolto IT1190872B (it)

Priority Applications (5)

Application Number Priority Date Filing Date Title
IT21893/82A IT1190872B (it) 1982-06-17 1982-06-17 Sistema di amplificazione audio con incremento della potenza media di ascolto
GB08315613A GB2123231B (en) 1982-06-17 1983-06-07 Gain control of audio-amplifying systems
DE19833321293 DE3321293A1 (de) 1982-06-17 1983-06-13 Audioverstaerkungssystem mit steigerung der durchschnittlichen hoerleistung
JP58105961A JPS595711A (ja) 1982-06-17 1983-06-15 音声増幅方式
FR8310097A FR2529035A1 (fr) 1982-06-17 1983-06-17 Dispositif d'amplification d'audiofrequences permettant un accroissement de la puissance moyenne d'ecoute

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT21893/82A IT1190872B (it) 1982-06-17 1982-06-17 Sistema di amplificazione audio con incremento della potenza media di ascolto

Publications (2)

Publication Number Publication Date
IT8221893A0 IT8221893A0 (it) 1982-06-17
IT1190872B true IT1190872B (it) 1988-02-24

Family

ID=11188326

Family Applications (1)

Application Number Title Priority Date Filing Date
IT21893/82A IT1190872B (it) 1982-06-17 1982-06-17 Sistema di amplificazione audio con incremento della potenza media di ascolto

Country Status (5)

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

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 (fr) * 1986-02-18 1988-04-29 Grenet Edouard Dispositif de correction automatique des variations de volume sonore d'un recepteur de radiodiffusion ou de television
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 (fr) * 1961-11-15 1962-12-28 Thomson Houston Comp Francaise Perfectionnements aux systèmes de régulation
GB1056265A (en) * 1962-10-15 1967-01-25 Shipton Electronics Ltd Improvements in or relating to automatic gain control circuits
CH462894A (fr) * 1966-09-29 1968-09-30 Eresa S A Dispositif de réglage automatique de gain d'un amplificateur audio
BE742465A (it) * 1968-12-11 1970-05-14
US3770984A (en) * 1971-03-03 1973-11-06 Harris Intertype Corp Fast recovery low distortion limiter circuit
DE2403799B2 (de) * 1974-01-26 1979-07-26 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verstärkerschaltung mit selbsttätiger Verstärkungsregelung
CA1034873A (en) * 1974-06-24 1978-07-18 Masahiro Chikatsu Limited circuit for recording amplifier
AT348590B (de) * 1975-09-26 1979-02-26 Grundig Emv Schaltungsanordnung zur ausschaltung des einflusses kurzer stoerimpulse bei automatischer pegelregelung
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 (it) * 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 (de) * 1980-07-19 1986-10-23 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltungsanordnung zur selbsttätigen Regelung oder Begrenzung der Dynamik von Signalen

Also Published As

Publication number Publication date
DE3321293A1 (de) 1984-01-05
JPS595711A (ja) 1984-01-12
GB8315613D0 (en) 1983-07-13
GB2123231B (en) 1986-04-16
FR2529035A1 (fr) 1983-12-23
GB2123231A (en) 1984-01-25
IT8221893A0 (it) 1982-06-17

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970628