WO2009054265A1 - オーディオパワーアンプ - Google Patents
オーディオパワーアンプ Download PDFInfo
- Publication number
- WO2009054265A1 WO2009054265A1 PCT/JP2008/068276 JP2008068276W WO2009054265A1 WO 2009054265 A1 WO2009054265 A1 WO 2009054265A1 JP 2008068276 W JP2008068276 W JP 2008068276W WO 2009054265 A1 WO2009054265 A1 WO 2009054265A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- channel
- relay
- input side
- power amplifier
- amplifier
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/68—Combinations of amplifiers, e.g. multi-channel amplifiers for stereophonics
-
- 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
- H03F1/0277—Selecting one or more amplifiers from a plurality of 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
- H03F1/52—Circuit arrangements for protecting such amplifiers
-
- 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
- H03F3/183—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
- H03F3/187—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only in integrated circuits
-
- 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
- H03F3/211—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/72—Gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal
-
- 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
- H03F2200/414—A switch being coupled in the output circuit of an amplifier to switch the output on/off
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/537—A transformer being used as coupling element between two amplifying stages
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/541—Transformer coupled at the output of an amplifier
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/20—Indexing scheme relating to power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F2203/21—Indexing scheme relating to power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F2203/211—Indexing scheme relating to power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several amplifiers
- H03F2203/21109—An input signal being distributed by switching to a plurality of paralleled power amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/20—Indexing scheme relating to power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F2203/21—Indexing scheme relating to power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F2203/211—Indexing scheme relating to power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several amplifiers
- H03F2203/21145—Output signals are combined by switching a plurality of paralleled power amplifiers to a common output
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/007—Protection circuits for transducers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Multimedia (AREA)
- Amplifiers (AREA)
Abstract
【課題】 従来よりも小型かつ軽量であり、しかも様々な使用条件に柔軟に対応することができるハイ・インピーダンス方式のパワーアンプを提供する。 【解決手段】 多チャンネルモードが選択されると、入力側のリレー16は、第2チャンネルCH2用の増幅回路12aの入力側を第2チャンネルCH2用の入力端子14aと接続するように切り換わる。併せて、出力側のリレー42は、OFFする。これにより、第1チャンネルCH1と第2チャンネルCH2とを有する多チャンネルアンプが形成される。一方、大出力モードが選択されると、入力側リレー16は、第2チャンネルCH2用の増幅回路12aの入力側を第1チャンネルCH1用の入力端子14と接続するように切り換わる。併せて、出力側リレー42はONする。これにより、合成チャンネルCH0のみの単一チャンネルながらも60[W]の定格出力を有する大出力アンプが形成される。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08841759.7A EP2202880B1 (en) | 2007-10-23 | 2008-10-08 | Audio power amplifier |
CN200880107251.2A CN101803185B (zh) | 2007-10-23 | 2008-10-08 | 音频功率放大器 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007274544A JP4949193B2 (ja) | 2007-10-23 | 2007-10-23 | オーディオパワーアンプ |
JP2007-274544 | 2007-10-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009054265A1 true WO2009054265A1 (ja) | 2009-04-30 |
Family
ID=40579371
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2008/068276 WO2009054265A1 (ja) | 2007-10-23 | 2008-10-08 | オーディオパワーアンプ |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2202880B1 (ja) |
JP (1) | JP4949193B2 (ja) |
CN (1) | CN101803185B (ja) |
WO (1) | WO2009054265A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102934342A (zh) * | 2010-03-08 | 2013-02-13 | 达文希斯 | 用于化学气象沉积装置的电源装置及其控制方法 |
CN103812458A (zh) * | 2014-01-27 | 2014-05-21 | 合肥师范学院 | X波段单片功率放大器 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8384478B2 (en) * | 2010-03-04 | 2013-02-26 | Bose Corporation | Versatile audio power amplifier |
US9515749B2 (en) * | 2015-05-07 | 2016-12-06 | Qualcomm Incorporated | Low noise amplifier module with output coupler |
CN111885462B (zh) * | 2020-07-17 | 2022-08-05 | 上海艾为电子技术股份有限公司 | 音频功放电路及其功放模式控制方法、电子设备 |
CN116827362B (zh) * | 2023-08-29 | 2023-12-22 | 上海移芯通信科技股份有限公司 | 一种射频电路、芯片、多频段接收设备及频段切换方法 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0185386A2 (en) | 1984-12-20 | 1986-06-25 | General Electric Company | Polyimides and method for their preparation |
JPS62271509A (ja) * | 1986-05-20 | 1987-11-25 | Matsushita Electric Ind Co Ltd | 昇圧トランス型増幅器 |
JPH0226892U (ja) * | 1988-08-05 | 1990-02-21 | ||
JPH0388018U (ja) * | 1989-12-26 | 1991-09-09 | ||
JPH0970099A (ja) | 1995-08-30 | 1997-03-11 | Toa Corp | スピーカラインの検査装置 |
WO2007080879A1 (ja) * | 2006-01-10 | 2007-07-19 | Pioneer Corporation | 音声信号処理装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8105371A (nl) * | 1981-11-27 | 1983-06-16 | Philips Nv | Inrichting voor het aansturen van een of meer omzeteenheden. |
JPS58132495U (ja) * | 1982-03-01 | 1983-09-07 | 三洋電機株式会社 | 音声出力回路 |
JPS6047316U (ja) * | 1983-09-09 | 1985-04-03 | 日本コロムビア株式会社 | 増幅装置 |
JPH0226892A (ja) * | 1988-07-15 | 1990-01-29 | Fujitsu Ltd | 分子線エピタキシャル成長方法及び装置 |
JPH03141800A (ja) * | 1989-07-19 | 1991-06-17 | Nishi Denko:Kk | 音響機器システム |
JP4674474B2 (ja) * | 2005-02-24 | 2011-04-20 | パナソニック株式会社 | パラレル駆動バイアンプ切換回路 |
-
2007
- 2007-10-23 JP JP2007274544A patent/JP4949193B2/ja active Active
-
2008
- 2008-10-08 WO PCT/JP2008/068276 patent/WO2009054265A1/ja active Application Filing
- 2008-10-08 CN CN200880107251.2A patent/CN101803185B/zh active Active
- 2008-10-08 EP EP08841759.7A patent/EP2202880B1/en not_active Not-in-force
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0185386A2 (en) | 1984-12-20 | 1986-06-25 | General Electric Company | Polyimides and method for their preparation |
JPS62271509A (ja) * | 1986-05-20 | 1987-11-25 | Matsushita Electric Ind Co Ltd | 昇圧トランス型増幅器 |
JPH0226892U (ja) * | 1988-08-05 | 1990-02-21 | ||
JPH0388018U (ja) * | 1989-12-26 | 1991-09-09 | ||
JPH0970099A (ja) | 1995-08-30 | 1997-03-11 | Toa Corp | スピーカラインの検査装置 |
WO2007080879A1 (ja) * | 2006-01-10 | 2007-07-19 | Pioneer Corporation | 音声信号処理装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2202880A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102934342A (zh) * | 2010-03-08 | 2013-02-13 | 达文希斯 | 用于化学气象沉积装置的电源装置及其控制方法 |
CN103812458A (zh) * | 2014-01-27 | 2014-05-21 | 合肥师范学院 | X波段单片功率放大器 |
Also Published As
Publication number | Publication date |
---|---|
CN101803185B (zh) | 2013-08-14 |
CN101803185A (zh) | 2010-08-11 |
EP2202880A1 (en) | 2010-06-30 |
EP2202880A4 (en) | 2012-02-29 |
JP2009105585A (ja) | 2009-05-14 |
EP2202880B1 (en) | 2013-08-21 |
JP4949193B2 (ja) | 2012-06-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2009054265A1 (ja) | オーディオパワーアンプ | |
WO2007133474A3 (en) | Multiband radio with transmitter output power optimization | |
WO2007016186A3 (en) | Inline power controller | |
WO2006062831A3 (en) | Voltage clamp for improved transient performance of a collector voltage controlled power amplifier | |
WO2007136920A3 (en) | High efficiency converter providing switching amplifier bias | |
GB0418944D0 (en) | Method for envelope clipping | |
WO2007143373A3 (en) | Mixing techniques for mixing audio | |
WO2009011761A3 (en) | Switching device with reduced intermodulation distortion | |
WO2006086022A3 (en) | Dual output switching regulator and method of operation | |
WO2007127842A3 (en) | Communicating with active noise reducing headset | |
WO2008076882A3 (en) | Channel access scheme for ultra-wide band communication | |
WO2008017597A3 (de) | Verfahren zur inbetriebnahme von mindestens einem feldgerät | |
TW200627771A (en) | Switch regulating control circuit, switch regulator and switch signal generator using the same | |
TW200744294A (en) | Voltage converter capable of avoiding voltage drop occurring in input signal and related method thereof | |
WO2014110289A3 (en) | Programmably configured switchmode audio amplifier | |
MY136501A (en) | Method and apparatus to match output impedance of combined outphasing power amplifiers | |
WO2004109934A3 (en) | Splitter | |
WO2007035769A3 (en) | Electroluminescent lighted headphones | |
EP2044687A4 (en) | Method for controlling a linear amplifier and power amplifier arrangement | |
TW200635208A (en) | Low noise amplifier | |
TW200520485A (en) | Precise slew rate control line driver | |
TWI266480B (en) | Output driver with feedback slew rate control | |
WO2009139814A3 (en) | Modified distributed amplifier to improve low frequency efficiency and noise figure | |
TW200633371A (en) | Variable gain amplifier maintaining constant DC offset at output end | |
WO2009040988A1 (ja) | 切替装置及び試験装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200880107251.2 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 08841759 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2008841759 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |