ITTO910787A0 - Amplificatore di potenza, in particolare di tipo audio - Google Patents
Amplificatore di potenza, in particolare di tipo audioInfo
- Publication number
- ITTO910787A0 ITTO910787A0 IT91TO787A ITTO910787A ITTO910787A0 IT TO910787 A0 ITTO910787 A0 IT TO910787A0 IT 91TO787 A IT91TO787 A IT 91TO787A IT TO910787 A ITTO910787 A IT TO910787A IT TO910787 A0 ITTO910787 A0 IT TO910787A0
- Authority
- IT
- Italy
- Prior art keywords
- power amplifier
- audio type
- audio
- type
- amplifier
- Prior art date
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
- H03G3/20—Automatic control
-
- 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
-
- 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)
- Control Of Amplification And Gain Control (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
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 |
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 |
EP92117840A EP0537792A1 (en) | 1991-10-18 | 1992-10-19 | Power amplifier, in particular, audio amplifier |
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 true ITTO910787A0 (it) | 1991-10-18 |
ITTO910787A1 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)
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)
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. |
-
1991
- 1991-10-18 IT ITTO910787A patent/IT1249844B/it active IP Right Grant
-
1992
- 1992-10-15 US US07/962,488 patent/US5315268A/en not_active Expired - Lifetime
- 1992-10-19 JP JP28002792A patent/JPH05251948A/ja active Pending
- 1992-10-19 EP EP92117840A patent/EP0537792A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
EP0537792A1 (en) | 1993-04-21 |
JPH05251948A (ja) | 1993-09-28 |
ITTO910787A1 (it) | 1993-04-19 |
US5315268A (en) | 1994-05-24 |
IT1249844B (it) | 1995-03-28 |
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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 |