CN101320961B - 功率放大电路 - Google Patents

功率放大电路 Download PDF

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Publication number
CN101320961B
CN101320961B CN2008101104623A CN200810110462A CN101320961B CN 101320961 B CN101320961 B CN 101320961B CN 2008101104623 A CN2008101104623 A CN 2008101104623A CN 200810110462 A CN200810110462 A CN 200810110462A CN 101320961 B CN101320961 B CN 101320961B
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CN
China
Prior art keywords
mentioned
voltage
input signal
supplied
unit
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 - Fee Related
Application number
CN2008101104623A
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English (en)
Chinese (zh)
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CN101320961A (zh
Inventor
岩松正幸
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yamaha Corp
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Yamaha Corp
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Priority claimed from JP2007149202A external-priority patent/JP4983412B2/ja
Application filed by Yamaha Corp filed Critical Yamaha Corp
Publication of CN101320961A publication Critical patent/CN101320961A/zh
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Publication of CN101320961B publication Critical patent/CN101320961B/zh
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CN2008101104623A 2007-06-05 2008-06-03 功率放大电路 Expired - Fee Related CN101320961B (zh)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2007-149201 2007-06-05
JP2007149201A JP2008306269A (ja) 2007-06-05 2007-06-05 電力増幅回路
JP2007149202 2007-06-05
JP2007-149202 2007-06-05
JP2007149202A JP4983412B2 (ja) 2007-06-05 2007-06-05 電力増幅回路
JP2007149201 2007-06-05

Publications (2)

Publication Number Publication Date
CN101320961A CN101320961A (zh) 2008-12-10
CN101320961B true CN101320961B (zh) 2012-07-04

Family

ID=40180845

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2008101104623A Expired - Fee Related CN101320961B (zh) 2007-06-05 2008-06-03 功率放大电路

Country Status (2)

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JP (1) JP2008306269A (ja)
CN (1) CN101320961B (ja)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8823343B2 (en) * 2009-12-22 2014-09-02 Yamaha Corporation Power amplifying circuit, DC-DC converter, peak holding circuit, and output voltage control circuit including the peak holding circuit
JP5711041B2 (ja) * 2011-05-09 2015-04-30 新日本無線株式会社 容量性スピーカ駆動回路
US8665021B2 (en) * 2012-07-17 2014-03-04 Analog Devices, Inc. Apparatus and methods for amplifier power supply control
CN203482389U (zh) 2013-09-18 2014-03-12 中兴通讯股份有限公司 一种压电扬声器驱动装置
KR102108031B1 (ko) * 2013-10-16 2020-05-07 현대모비스 주식회사 차량용 오디오 증폭장치
CN105263084B (zh) * 2015-09-18 2019-04-12 浙江胜必得汽车配件科技有限公司 自保式电子喇叭及包含该自保式电子喇叭的汽车

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4320350A (en) * 1979-11-29 1982-03-16 Rockwell International Corporation Sliding power supply for RF power amplifier
CN1437793A (zh) * 2000-03-10 2003-08-20 帕拉根通讯有限公司 提高在大的峰值对平均值比下工作的功率放大器的效率的改进方法及装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5766494A (en) * 1980-10-14 1982-04-22 Suwa Seikosha Kk Device for driving piezoelectric element sound producing unit for portable small size information device
JPS59146296A (ja) * 1983-02-08 1984-08-22 Murata Mfg Co Ltd 圧電スピ−カの駆動方法
JPS62133496U (ja) * 1986-02-18 1987-08-22
JPH07240636A (ja) * 1994-03-01 1995-09-12 Kenwood Corp 電力増幅器
JP3512654B2 (ja) * 1998-11-09 2004-03-31 ローム株式会社 圧電スピーカを駆動する増幅器
JP2003052095A (ja) * 2001-08-07 2003-02-21 Denon Ltd オーディオ増幅回路
JP2005109665A (ja) * 2003-09-29 2005-04-21 Matsushita Electric Ind Co Ltd 負荷駆動装置
JP4261316B2 (ja) * 2003-11-06 2009-04-30 フォスター電機株式会社 オーディオ回路

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4320350A (en) * 1979-11-29 1982-03-16 Rockwell International Corporation Sliding power supply for RF power amplifier
CN1437793A (zh) * 2000-03-10 2003-08-20 帕拉根通讯有限公司 提高在大的峰值对平均值比下工作的功率放大器的效率的改进方法及装置

Also Published As

Publication number Publication date
CN101320961A (zh) 2008-12-10
JP2008306269A (ja) 2008-12-18

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Granted publication date: 20120704

Termination date: 20210603

CF01 Termination of patent right due to non-payment of annual fee