CN101043205A - 低失真丁类放大器 - Google Patents
低失真丁类放大器 Download PDFInfo
- Publication number
- CN101043205A CN101043205A CNA200710089664XA CN200710089664A CN101043205A CN 101043205 A CN101043205 A CN 101043205A CN A200710089664X A CNA200710089664X A CN A200710089664XA CN 200710089664 A CN200710089664 A CN 200710089664A CN 101043205 A CN101043205 A CN 101043205A
- Authority
- CN
- China
- Prior art keywords
- signal
- amplifier
- voltage level
- bridge circuit
- full
- 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.)
- Granted
Links
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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
- H03F3/2173—Class D power amplifiers; Switching amplifiers of the bridge type
-
- 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
- H03F1/32—Modifications of amplifiers to reduce non-linear distortion
- H03F1/3205—Modifications of amplifiers to reduce non-linear distortion in field-effect transistor amplifiers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Amplifiers (AREA)
Abstract
Description
Claims (23)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US78510506P | 2006-03-22 | 2006-03-22 | |
US60/785,105 | 2006-03-22 | ||
US11/643,196 | 2006-12-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101043205A true CN101043205A (zh) | 2007-09-26 |
CN100525084C CN100525084C (zh) | 2009-08-05 |
Family
ID=38808477
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB200710089664XA Expired - Fee Related CN100525084C (zh) | 2006-03-22 | 2007-03-22 | 低失真丁类放大器 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7471144B2 (zh) |
JP (1) | JP4795284B2 (zh) |
CN (1) | CN100525084C (zh) |
TW (1) | TWI330932B (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101488730B (zh) * | 2008-01-17 | 2012-02-22 | 凹凸电子(武汉)有限公司 | 放大器、音频系统以及输入信号的放大方法 |
CN107070422A (zh) * | 2015-09-11 | 2017-08-18 | Ess技术有限公司 | 用于实现d类放大器的高输出信号摆幅的方法及设备 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5077132B2 (ja) * | 2008-08-06 | 2012-11-21 | ヤマハ株式会社 | 電力増幅器およびコモンモードチョークコイル |
EP2290812B1 (en) | 2009-08-11 | 2015-06-10 | Dialog Semiconductor GmbH | Concept, method and apparatus of improved distortion switched-mode amplifier |
US8143944B2 (en) | 2010-08-23 | 2012-03-27 | Texas Instruments Incorporated | Method and apparatus for sensing a current for varying impedance loads |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58165420A (ja) * | 1982-03-26 | 1983-09-30 | Nippon Gakki Seizo Kk | パルス幅変調回路 |
US6614297B2 (en) * | 2001-07-06 | 2003-09-02 | Texas Instruments Incorporated | Modulation scheme for filterless switching amplifiers with reduced EMI |
JP4434557B2 (ja) * | 2001-07-31 | 2010-03-17 | ヤマハ株式会社 | 電力増幅回路 |
JP3941443B2 (ja) * | 2001-09-27 | 2007-07-04 | ヤマハ株式会社 | 自走式pwm増幅器 |
JP4048781B2 (ja) * | 2002-01-08 | 2008-02-20 | ヤマハ株式会社 | D級増幅器 |
JP3909280B2 (ja) * | 2002-10-10 | 2007-04-25 | シャープ株式会社 | デジタル音声出力装置 |
JP4021333B2 (ja) * | 2003-01-27 | 2007-12-12 | シャープ株式会社 | デジタル・スイッチング増幅装置 |
JP4731828B2 (ja) * | 2004-04-14 | 2011-07-27 | ルネサスエレクトロニクス株式会社 | D級アンプ |
WO2005114833A2 (en) * | 2004-05-18 | 2005-12-01 | Nphysics, Inc. | Self-oscillation switching amplifier |
-
2006
- 2006-12-20 US US11/643,196 patent/US7471144B2/en not_active Expired - Fee Related
-
2007
- 2007-03-16 TW TW096109079A patent/TWI330932B/zh not_active IP Right Cessation
- 2007-03-22 CN CNB200710089664XA patent/CN100525084C/zh not_active Expired - Fee Related
- 2007-03-22 JP JP2007075367A patent/JP4795284B2/ja not_active Expired - Fee Related
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101488730B (zh) * | 2008-01-17 | 2012-02-22 | 凹凸电子(武汉)有限公司 | 放大器、音频系统以及输入信号的放大方法 |
CN107070422A (zh) * | 2015-09-11 | 2017-08-18 | Ess技术有限公司 | 用于实现d类放大器的高输出信号摆幅的方法及设备 |
CN107070423A (zh) * | 2015-09-11 | 2017-08-18 | Ess技术有限公司 | 用于实现d 类放大器的高输出信号摆幅的方法及设备 |
CN107070422B (zh) * | 2015-09-11 | 2021-07-27 | Ess技术有限公司 | 用于实现d类放大器的高输出信号摆幅的方法及设备 |
CN107070423B (zh) * | 2015-09-11 | 2021-10-08 | Ess技术有限公司 | 用于实现d类放大器的高输出信号摆幅的方法及设备 |
Also Published As
Publication number | Publication date |
---|---|
US7471144B2 (en) | 2008-12-30 |
TWI330932B (en) | 2010-09-21 |
CN100525084C (zh) | 2009-08-05 |
TW200740111A (en) | 2007-10-16 |
JP4795284B2 (ja) | 2011-10-19 |
JP2007259456A (ja) | 2007-10-04 |
US20070222507A1 (en) | 2007-09-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: O2 TECH. INTERNATIONAL LTD. Free format text: FORMER OWNER: O2 MICRO INC Effective date: 20101124 |
|
C41 | Transfer of patent application or patent right or utility model | ||
COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: CALIFORNIA, USA TO: GRAND CAYMAN, CAYMAN ISLANDS, BRITAIN |
|
TR01 | Transfer of patent right |
Effective date of registration: 20101124 Address after: Grand Cayman British Cayman Islands Patentee after: O2 Tech. International Ltd. Address before: American California Patentee before: O2 Micro Inc |
|
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090805 Termination date: 20160322 |
|
CF01 | Termination of patent right due to non-payment of annual fee |