CN101803183B - 场内广播系统 - Google Patents

场内广播系统 Download PDF

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Publication number
CN101803183B
CN101803183B CN2008801065580A CN200880106558A CN101803183B CN 101803183 B CN101803183 B CN 101803183B CN 2008801065580 A CN2008801065580 A CN 2008801065580A CN 200880106558 A CN200880106558 A CN 200880106558A CN 101803183 B CN101803183 B CN 101803183B
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CN
China
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mentioned
terminals
power
unit
input
Prior art date
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Active
Application number
CN2008801065580A
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English (en)
Chinese (zh)
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CN101803183A (zh
Inventor
河合祐马
川口耕司
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Toa Corp
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Toa Corp
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Publication of CN101803183A publication Critical patent/CN101803183A/zh
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Publication of CN101803183B publication Critical patent/CN101803183B/zh
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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/04—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only
    • H03F3/08—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only controlled by light
    • H03F3/085—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only controlled by light using opto-couplers between stages
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers
    • H04R3/12—Circuits for transducers for distributing signals to two or more loudspeakers
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Amplifiers (AREA)
  • Circuit For Audible Band Transducer (AREA)
CN2008801065580A 2007-09-13 2008-09-03 场内广播系统 Active CN101803183B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2007-237837 2007-09-13
JP2007237837A JP5139014B2 (ja) 2007-09-13 2007-09-13 構内放送システム
PCT/JP2008/065851 WO2009034889A1 (ja) 2007-09-13 2008-09-03 構内放送システム

Publications (2)

Publication Number Publication Date
CN101803183A CN101803183A (zh) 2010-08-11
CN101803183B true CN101803183B (zh) 2013-08-14

Family

ID=40451898

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2008801065580A Active CN101803183B (zh) 2007-09-13 2008-09-03 场内广播系统

Country Status (5)

Country Link
US (1) US8306239B2 (enExample)
EP (1) EP2190114B1 (enExample)
JP (1) JP5139014B2 (enExample)
CN (1) CN101803183B (enExample)
WO (1) WO2009034889A1 (enExample)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5685173B2 (ja) * 2011-10-04 2015-03-18 Toa株式会社 拡声システム
CN102412741A (zh) * 2011-12-12 2012-04-11 西安福安创意咨询有限责任公司 一种日光灯隔离型双电源方法
CN102420536A (zh) * 2011-12-12 2012-04-18 西安福安创意咨询有限责任公司 一种led隔离型双电源方法
CN103780211A (zh) * 2013-12-31 2014-05-07 北京长峰广播通讯设备有限责任公司 高电压固态放大器

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004129018A (ja) * 2002-10-04 2004-04-22 Matsushita Electric Ind Co Ltd パワードスピーカー装置
JP2005236349A (ja) * 2004-02-17 2005-09-02 Toa Corp 増幅器

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03108907A (ja) * 1989-09-22 1991-05-09 Sharp Corp 絶縁アンプ
JPH0467782A (ja) 1990-07-06 1992-03-03 Matoritsukusu:Kk 交流電力増幅装置
US5818328A (en) * 1995-10-03 1998-10-06 Audio Enhancement Method and system for providing improved wireless audio transmission
JP3538534B2 (ja) * 1997-12-19 2004-06-14 ティーオーエー株式会社 スピーカラインの検査装置
US6407603B2 (en) 1999-09-20 2002-06-18 Lockheed Martin Corporation Analog voltage isolation circuit
JP2004112161A (ja) 2002-09-17 2004-04-08 Sony Corp 音声出力装置
US20060182288A1 (en) * 2005-02-16 2006-08-17 Arcaria Angelo S Addressable zone relay method and apparatus
JP4607742B2 (ja) * 2005-11-15 2011-01-05 アバゴ・テクノロジーズ・イーシービーユー・アイピー（シンガポール）プライベート・リミテッド フォトカプラの制御装置及びフォトカプラの制御方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004129018A (ja) * 2002-10-04 2004-04-22 Matsushita Electric Ind Co Ltd パワードスピーカー装置
JP2005236349A (ja) * 2004-02-17 2005-09-02 Toa Corp 増幅器

Also Published As

Publication number Publication date
CN101803183A (zh) 2010-08-11
US20100189278A1 (en) 2010-07-29
WO2009034889A1 (ja) 2009-03-19
JP2009071582A (ja) 2009-04-02
US8306239B2 (en) 2012-11-06
JP5139014B2 (ja) 2013-02-06
EP2190114A1 (en) 2010-05-26
EP2190114A4 (en) 2012-05-09
EP2190114B1 (en) 2014-08-13

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