DE69127340D1 - Pulsbreitenmodulierter linearer Leistungsverstärker - Google Patents
Pulsbreitenmodulierter linearer LeistungsverstärkerInfo
- Publication number
- DE69127340D1 DE69127340D1 DE69127340T DE69127340T DE69127340D1 DE 69127340 D1 DE69127340 D1 DE 69127340D1 DE 69127340 T DE69127340 T DE 69127340T DE 69127340 T DE69127340 T DE 69127340T DE 69127340 D1 DE69127340 D1 DE 69127340D1
- Authority
- DE
- Germany
- Prior art keywords
- pulse width
- power amplifier
- width modulated
- linear power
- modulated linear
- 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 - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F3/217—Class D power amplifiers; Switching 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
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
- H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
- H03F1/0216—Continuous control
- H03F1/0222—Continuous control by using a signal derived from the input signal
- H03F1/0227—Continuous control by using a signal derived from the input signal using supply converters
-
- 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
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
- H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
- H03F1/0216—Continuous control
- H03F1/0233—Continuous control by using a signal derived from the output signal, e.g. bootstrapping the voltage supply
- H03F1/0238—Continuous control by using a signal derived from the output signal, e.g. bootstrapping the voltage supply using supply converters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/03—Indexing scheme relating to amplifiers the amplifier being designed for audio applications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/351—Pulse width modulation being used in an amplifying circuit
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9003426A SE467331B (sv) | 1990-10-26 | 1990-10-26 | Audio-effektfoerstaerkare med pulsbreddsmodulering samt ett audio-effektsteg |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69127340D1 true DE69127340D1 (de) | 1997-09-25 |
DE69127340T2 DE69127340T2 (de) | 1998-02-05 |
Family
ID=20380752
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69127340T Expired - Lifetime DE69127340T2 (de) | 1990-10-26 | 1991-10-25 | Pulsbreitenmodulierter linearer Leistungsverstärker |
Country Status (4)
Country | Link |
---|---|
US (1) | US5200711A (de) |
EP (1) | EP0483094B1 (de) |
DE (1) | DE69127340T2 (de) |
SE (1) | SE467331B (de) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5450036A (en) * | 1993-02-23 | 1995-09-12 | Rohm Co., Ltd. | Power amplifier circuit for audio signal and audio device using the same |
US5424684A (en) * | 1993-03-04 | 1995-06-13 | Rohm Co., Ltd. | Power amplifier circuit for audio signal and audio device using the same |
US5410592A (en) * | 1993-06-04 | 1995-04-25 | Harris Corporation | Class `D` audio speaker amplifier circuit with state variable feedback control |
US5396194A (en) * | 1993-11-19 | 1995-03-07 | Carver Corporation | Audio frequency power amplifiers |
US5508658A (en) * | 1994-04-27 | 1996-04-16 | Rohm Co., Ltd. | Power amplifier circuit for audio signal and audio device using the same |
US5543753A (en) * | 1994-06-22 | 1996-08-06 | Carver Corporation | Audio frequency power amplifiers with actively damped filter |
US5606289A (en) * | 1994-06-22 | 1997-02-25 | Carver Corporation | Audio frequency power amplifiers with actively damped filter |
DE19740137A1 (de) * | 1997-09-12 | 1999-03-18 | Alsthom Cge Alcatel | Verfahren und Schaltungsanordnung zur Rufwechselspannungserzeugung für elektronische Teilnehmerschaltungen |
US5990751A (en) * | 1997-10-16 | 1999-11-23 | Nikon Corporation | Method and apparatus for improving power transfer efficiency of an amplifier system |
DK1101278T3 (da) * | 1998-07-24 | 2006-09-25 | Texas Instr Denmark As | Fremgangsmåde til dæmpning af nulgennemgangsforvrængning og stöj i en forstærker, en forstærker, samt anvendelser af fremgangsmåde og forstærkeren |
US6172490B1 (en) * | 1999-12-08 | 2001-01-09 | Alcatel Networks Corporation | Precise rail tracking method for powering dual voltage integrated circuits |
AU2001276206A1 (en) * | 2000-07-12 | 2002-01-21 | Indigo Manufacturing Inc. | Power amplifier with multiple power supplies |
US6621335B2 (en) * | 2001-04-18 | 2003-09-16 | Microsemi Corporation | Class D amplifier with passive RC network |
US20030095000A1 (en) * | 2001-11-16 | 2003-05-22 | Acoustic Technology, Inc. | Apparatus with ultra high output power class D audio amplifier |
US20030095666A1 (en) * | 2001-11-16 | 2003-05-22 | Ramage Robert D. | Machine for controlling and amplifying a low-level audio signal using a high efficiency class D switching amplifier |
JP3894294B2 (ja) * | 2001-11-19 | 2007-03-14 | ソニー株式会社 | パワーアンプ |
US8036402B2 (en) | 2005-12-15 | 2011-10-11 | Harman International Industries, Incorporated | Distortion compensation |
GB2446843B (en) | 2006-06-30 | 2011-09-07 | Wolfson Microelectronics Plc | Amplifier circuit and methods of operation thereof |
US7719141B2 (en) * | 2006-11-16 | 2010-05-18 | Star Rf, Inc. | Electronic switch network |
US8362838B2 (en) * | 2007-01-19 | 2013-01-29 | Cirrus Logic, Inc. | Multi-stage amplifier with multiple sets of fixed and variable voltage rails |
US7863841B2 (en) * | 2007-06-15 | 2011-01-04 | Paolo Menegoli | Class H drive |
US7786804B2 (en) * | 2008-06-02 | 2010-08-31 | Mediatek Singapore Pte. Ltd. | Driving amplifier circuit with digital control and DC offset equalization |
DE102008030576B3 (de) | 2008-06-27 | 2009-12-03 | Texas Instruments Deutschland Gmbh | Hocheffizienter Präzisionsverstärker |
US8754705B2 (en) | 2011-08-01 | 2014-06-17 | Crestron Electronics Inc. | Audio amplifier power supply with inherent power factor correction |
JP5883706B2 (ja) * | 2012-03-30 | 2016-03-15 | 株式会社ショーワ | 相対角度検出装置および電動パワーステアリング装置 |
US9013239B2 (en) | 2012-05-15 | 2015-04-21 | Crestron Electronics Inc. | Audio amplifier power supply with inherent power factor correction |
EP3729642A1 (de) * | 2017-12-20 | 2020-10-28 | Dolby Laboratories Licensing Corporation | Konfigurierbares modales verstärkersystem |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51121239A (en) * | 1975-04-17 | 1976-10-23 | Sony Corp | An amplification circuit |
JPS6115620Y2 (de) * | 1976-03-02 | 1986-05-15 | ||
JPS5658303A (en) * | 1979-10-18 | 1981-05-21 | Sony Corp | Amplifying circuit |
JPS5723309A (en) * | 1980-07-16 | 1982-02-06 | Sanyo Electric Co Ltd | Electric power amplifying circuit of pulse width modulation system |
JPS5723310A (en) * | 1980-07-17 | 1982-02-06 | Sanyo Electric Co Ltd | Electric power amplifier circuit of pulse width modulation system |
JPS5732104A (en) * | 1980-08-06 | 1982-02-20 | Hitachi Ltd | Power-voltage-controlled type amplifier |
US4472687A (en) * | 1980-12-24 | 1984-09-18 | Tokyo Shibaura Denki Kabushiki Kaisha | Audio power amplifier for supplying electric power to a load by switching of power supply voltage |
JPS57140008A (en) * | 1981-02-20 | 1982-08-30 | Sanyo Electric Co Ltd | Power amplifying circuit |
JPS5814606A (ja) * | 1981-07-18 | 1983-01-27 | Pioneer Electronic Corp | 増幅器の電源供給回路 |
JPS58105606A (ja) * | 1981-12-17 | 1983-06-23 | Pioneer Electronic Corp | 増幅器の電源供給回路 |
JPS58119209A (ja) * | 1982-01-11 | 1983-07-15 | Hitachi Ltd | 電源電圧制御型増幅器 |
JPS5917710A (ja) * | 1982-07-22 | 1984-01-30 | Toshiba Corp | 電力増幅器 |
FR2552600A1 (fr) * | 1983-09-27 | 1985-03-29 | Commissariat Energie Atomique | Amplificateur de puissance a alimentation asservie |
JPH01147907A (ja) * | 1987-12-04 | 1989-06-09 | Oki Electric Ind Co Ltd | 電力増幅回路 |
JPH1147907A (ja) * | 1997-07-30 | 1999-02-23 | Honda Motor Co Ltd | 金属製ビレットの固相率判定方法および装置 |
-
1990
- 1990-10-26 SE SE9003426A patent/SE467331B/sv not_active IP Right Cessation
-
1991
- 1991-10-25 DE DE69127340T patent/DE69127340T2/de not_active Expired - Lifetime
- 1991-10-25 EP EP91850266A patent/EP0483094B1/de not_active Expired - Lifetime
- 1991-10-28 US US07/784,658 patent/US5200711A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US5200711A (en) | 1993-04-06 |
SE9003426D0 (sv) | 1990-10-26 |
EP0483094A3 (en) | 1992-12-09 |
SE9003426L (sv) | 1992-04-27 |
DE69127340T2 (de) | 1998-02-05 |
SE467331B (sv) | 1992-06-29 |
EP0483094B1 (de) | 1997-08-20 |
EP0483094A2 (de) | 1992-04-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |