ITTO910787A1 - Amplificatore di potenza, in particolare di tipo audio. - Google Patents

Amplificatore di potenza, in particolare di tipo audio.

Info

Publication number
ITTO910787A1
ITTO910787A1 IT000787A ITTO910787A ITTO910787A1 IT TO910787 A1 ITTO910787 A1 IT TO910787A1 IT 000787 A IT000787 A IT 000787A IT TO910787 A ITTO910787 A IT TO910787A IT TO910787 A1 ITTO910787 A1 IT TO910787A1
Authority
IT
Italy
Prior art keywords
power amplifier
particular audio
audio type
type
amplifier
Prior art date
Application number
IT000787A
Other languages
English (en)
Inventor
Edoardo Botti
Claudio Tavazzani
Original Assignee
Sgs Thomson Microelectronics
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 Thomson Microelectronics filed Critical Sgs Thomson Microelectronics
Priority to ITTO910787A priority Critical patent/IT1249844B/it
Publication of ITTO910787A0 publication Critical patent/ITTO910787A0/it
Priority to US07/962,488 priority patent/US5315268A/en
Priority to EP92117840A priority patent/EP0537792A1/en
Priority to JP28002792A priority patent/JPH05251948A/ja
Publication of ITTO910787A1 publication Critical patent/ITTO910787A1/it
Application granted granted Critical
Publication of IT1249844B publication Critical patent/IT1249844B/it

Links

Classifications

    • 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
    • H03F1/52—Circuit arrangements for protecting such 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
    • H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • H03F1/302—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in bipolar transistor amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/20—Automatic control
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/447—Indexing scheme relating to amplifiers the amplifier being protected to temperature influence

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Amplifiers (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Control Of Amplification And Gain Control (AREA)
ITTO910787A 1991-10-18 1991-10-18 Amplificatore di potenza, in particolare di tipo audio. IT1249844B (it)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ITTO910787A IT1249844B (it) 1991-10-18 1991-10-18 Amplificatore di potenza, in particolare di tipo audio.
US07/962,488 US5315268A (en) 1991-10-18 1992-10-15 Audio power amplifier
EP92117840A EP0537792A1 (en) 1991-10-18 1992-10-19 Power amplifier, in particular, audio amplifier
JP28002792A JPH05251948A (ja) 1991-10-18 1992-10-19 電力増巾器及びこの電力増巾器を熱過負荷による損傷から保護する方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITTO910787A IT1249844B (it) 1991-10-18 1991-10-18 Amplificatore di potenza, in particolare di tipo audio.

Publications (3)

Publication Number Publication Date
ITTO910787A0 ITTO910787A0 (it) 1991-10-18
ITTO910787A1 true ITTO910787A1 (it) 1993-04-19
IT1249844B IT1249844B (it) 1995-03-28

Family

ID=11409651

Family Applications (1)

Application Number Title Priority Date Filing Date
ITTO910787A IT1249844B (it) 1991-10-18 1991-10-18 Amplificatore di potenza, in particolare di tipo audio.

Country Status (4)

Country Link
US (1) US5315268A (it)
EP (1) EP0537792A1 (it)
JP (1) JPH05251948A (it)
IT (1) IT1249844B (it)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19815923A1 (de) * 1998-04-09 1999-10-21 Grundig Ag Steuereinrichtung für einen Audioverstärker
DE19844741C1 (de) * 1998-09-29 2000-06-08 Siemens Ag Schaltungsanordnung zur Arbeitspunktstabilisierung eines Transistors
US6417730B1 (en) 2000-11-29 2002-07-09 Harris Corporation Automatic gain control system and related method
US6580318B2 (en) * 2001-03-08 2003-06-17 Maxim Integrated Products, Inc. Method and apparatus for protecting radio frequency power amplifiers
US7579958B2 (en) * 2003-06-03 2009-08-25 Wallace Henry B Audio power meter
US20040247136A1 (en) * 2003-06-03 2004-12-09 Wallace Henry B. True RMS audio power meter
US7054450B2 (en) * 2004-03-31 2006-05-30 Motorola, Inc. Method and system for ensuring audio safety
US20080273717A1 (en) * 2007-05-03 2008-11-06 Gerald Willis Audio amplifier thermal management using low frequency limiting
CN111901725B (zh) * 2020-07-22 2022-02-01 上海艾为电子技术股份有限公司 音频功放电路及其功率限制方法
CN116436418B (zh) * 2023-06-09 2023-09-08 尚睿微电子（上海）有限公司 一种保护电路及放大电路

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2637270C2 (de) * 1976-08-19 1978-05-03 Standard Elektrik Lorenz Ag, 7000 Stuttgart Überlastungsschutzeinrichtung
US4122400A (en) * 1976-11-08 1978-10-24 Rca Corporation Amplifier protection circuit
US4355341A (en) * 1980-06-30 1982-10-19 Rca Corporation Power protection circuit for transistors
US4564879A (en) * 1982-09-20 1986-01-14 International Standard Electric Corporation Electronic power overload protection circuit
US4581589A (en) * 1983-04-28 1986-04-08 Toa Electric Co., Ltd. Apparatus for avoiding clipping of amplifier
US4742312A (en) * 1987-05-22 1988-05-03 Delco Electronics Corporation Power limiting audio amplifier temperature protection circuit
IT1229777B (it) * 1989-05-22 1991-09-11 Sgs Thomson Microelectronics Circuito per la limitazione della temperatura senza distorsione per amplificatori audio di potenza.

Also Published As

Publication number Publication date
US5315268A (en) 1994-05-24
JPH05251948A (ja) 1993-09-28
ITTO910787A0 (it) 1991-10-18
IT1249844B (it) 1995-03-28
EP0537792A1 (en) 1993-04-21

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19971030