JP2005348452A - 電源からの直接音声 - Google Patents

電源からの直接音声 Download PDF

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Publication number
JP2005348452A
JP2005348452A JP2005255773A JP2005255773A JP2005348452A JP 2005348452 A JP2005348452 A JP 2005348452A JP 2005255773 A JP2005255773 A JP 2005255773A JP 2005255773 A JP2005255773 A JP 2005255773A JP 2005348452 A JP2005348452 A JP 2005348452A
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JP
Japan
Prior art keywords
signal
voltage
input
output
audio signal
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JP2005255773A
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English (en)
Inventor
Manuel D Rodriguez
ディ．ロドリゲズ マニュアル
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Harman International Industries Inc
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Harman International Industries Inc
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Application filed by Harman International Industries Inc filed Critical Harman International Industries Inc
Publication of JP2005348452A publication Critical patent/JP2005348452A/ja
Pending legal-status Critical Current

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Classifications

    • 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
    • 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
    • H03F3/2171—Class D power amplifiers; Switching amplifiers with field-effect devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/38—DC amplifiers with modulator at input and demodulator at output; Modulators or demodulators specially adapted for use in such amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

【課題】 電源から直接音声出力信号を提供すること、および入力音声信号をパルス幅変調しパルス幅変調を使用して、印加される高電圧と低電流を有し、高電圧／低電流パルス変調電圧を変圧器の出力の低電圧／高電流信号に切り換える出力変圧器を利用する隔離ゲートを駆動することであり、その際、出力信号は、スイッチング回路によって正しく検出され、復調されてスピーカを駆動する音声出力信号を提供すること。
【解決手段】 電力増幅器を使用せず、インピーダンス負荷から完全に遮断された電源から直接音声を発生する新しい回路。この回路は電力増幅出力段を有さず、信号入力がない場合、通電しないＭＯＳＦＥＴで設計されているため信号入力がないときは信号対雑音比がゼロである。
【選択図】 図１

Description
新しい音声回路のブロック図である。 図１の新しい回路の一部を形成する電源のブロック図である。 図１の回路の特定の点の様々な波形を示す波形図である。 直接音声が電源から直接得られる本回路の費用と比較した、通常の従来技術の１００ワットＡＢ級音声増幅器の費用を示すグラフである。
符号の説明
１２ 端子
２４ 変圧器
４０ 電力変換器
２２ 変調器
１８ 全波整流器

Claims (1)

  1. 電源からオフライン直接音声を得る方法であって、
    入力音声信号を受信するステップと、
    該入力音声信号を変調することにより、変調入力信号を提供するステップと、
    第１の電圧の大きさの入力巻線と該入力巻線より大きな第２の電圧を有する第１および第２の出力巻線とを有する遮断変圧器の該入力巻線に該変調入力音声信号を接続するステップと、
    該第１の出力巻線の一端と第１の電源電圧との間に第１のゲートを接続するステップと、
    該第２の出力巻線の一端と第２の電源電圧との間に第２のゲートを接続するステップであって、該変調入力音声信号の極性に応じて該第１のゲートおよび第２のゲートが交互にＯＮになるように該第２のゲートを接続するステップと、
    該入力音声信号を回復するように該第１および第２の出力巻線の各々の上で増大された出力電圧をフィルタ回路に接続することにより、回復入力音声信号を提供するステップと、
    さらに増幅することなく該回復入力音声信号を用いて入力音声スピーカを駆動するステップと
    を包含する、方法。
JP2005255773A 1998-04-14 2005-09-02 電源からの直接音声 Pending JP2005348452A (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/060,153 US5986498A (en) 1998-04-14 1998-04-14 Audio direct from power supply

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP14380599A Division JP4397457B2 (ja) 1998-04-14 1999-04-14 電源からオフライン直接音声を得る方法および装置

Publications (1)

Publication Number Publication Date
JP2005348452A true JP2005348452A (ja) 2005-12-15

Family

ID=22027709

Family Applications (2)

Application Number Title Priority Date Filing Date
JP14380599A Expired - Fee Related JP4397457B2 (ja) 1998-04-14 1999-04-14 電源からオフライン直接音声を得る方法および装置
JP2005255773A Pending JP2005348452A (ja) 1998-04-14 2005-09-02 電源からの直接音声

Family Applications Before (1)

Application Number Title Priority Date Filing Date
JP14380599A Expired - Fee Related JP4397457B2 (ja) 1998-04-14 1999-04-14 電源からオフライン直接音声を得る方法および装置

Country Status (5)

Country Link
US (1) US5986498A (ja)
EP (1) EP0951141B1 (ja)
JP (2) JP4397457B2 (ja)
CA (1) CA2268421C (ja)
DE (1) DE69920099T2 (ja)

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US6753729B2 (en) * 2000-01-06 2004-06-22 Mitek Corporation Self-oscillating variable frequency closed loop Class D amplifier
US6392476B1 (en) 2000-03-14 2002-05-21 Harman International Industries, Incorporated System and method of producing direct audio from a power supply
US6441685B1 (en) 2000-03-17 2002-08-27 Jl Audio, Inc. Amplifier circuit and method for providing negative feedback thereto
US20040086420A1 (en) * 2000-03-23 2004-05-06 Macphee Martin J. Methods for sterilizing serum or plasma
US6476673B2 (en) 2000-07-12 2002-11-05 Monolithic Power Systems, Inc. Class D audio amplifier
US6420930B1 (en) * 2000-07-12 2002-07-16 Monolithic Power Systems, Inc. Class D audio amplifier
US6504426B2 (en) * 2001-03-28 2003-01-07 Guy Picha Methods and systems for power amplifying of signals
JP2003023328A (ja) * 2001-07-06 2003-01-24 Niigata Seimitsu Kk オーディオアンプ
JP3820947B2 (ja) * 2001-09-21 2006-09-13 ヤマハ株式会社 Ｄ級増幅器
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
US20030095000A1 (en) * 2001-11-16 2003-05-22 Acoustic Technology, Inc. Apparatus with ultra high output power class D audio amplifier
EP1466399B1 (en) * 2001-12-17 2006-03-01 Koninklijke Philips Electronics N.V. Isolated converter with synchronized switching leg
JP2004214998A (ja) * 2003-01-06 2004-07-29 Denon Ltd デジタルアンプ
US7129872B1 (en) * 2005-05-25 2006-10-31 Audio Note Uk Ltd. Audio signal analog-to-digital converter utilizing a transformed-based input circuit
KR101128520B1 (ko) * 2005-10-24 2012-03-27 삼성전자주식회사 디지털 오디오 증폭기 및 이에 적합한 디지털 오디오 신호증폭 방법
US7545208B2 (en) * 2005-11-12 2009-06-09 Manuel De Jesus Rodriguez Signal amplification through an electromagnetic device
KR100714524B1 (ko) 2005-12-30 2007-05-07 주식회사 팬택앤큐리텔 호환형 음성 증폭장치 및 그 증폭장치를 갖는이동통신단말기
US8390373B2 (en) * 2010-06-08 2013-03-05 MUSIC Group IP Ltd. Ultra-high efficiency switching power inverter and power amplifier
US8410851B1 (en) 2011-09-12 2013-04-02 Wen-Hsiung Hsieh Switching amplifier with an inductor
US8451057B2 (en) 2011-11-02 2013-05-28 Wen-Hsiung Hsieh Switching amplifier using inductor current feedback
US9602067B2 (en) 2011-11-15 2017-03-21 Wen-Hsiung Hsieh Switching amplifier with pulsed current supply
US8416020B1 (en) 2011-11-20 2013-04-09 Wen-Hsiung Hsieh Switching amplifier and switching amplifying method
US8432221B1 (en) 2011-11-27 2013-04-30 Wen-Hsiung Hsieh Switching amplifying method and switching amplifier
US8525587B2 (en) 2011-12-04 2013-09-03 Wen-Hsiung Hsieh Switching amplifier with inductance means for transmitting energy
EP2667500A1 (de) * 2012-05-22 2013-11-27 Siemens Aktiengesellschaft Verstärkerschaltung und Verfahren zum Betrieb einer Verstärkerschaltung
US8760230B2 (en) 2012-06-28 2014-06-24 Wen-Hsiung Hsieh Switching amplifier with pulsed current source and sink
US10090771B2 (en) * 2015-08-05 2018-10-02 Sparton Corporation Switching mode power amplifier with load isolation
US10869128B2 (en) 2018-08-07 2020-12-15 Pangissimo Llc Modular speaker system

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CA1234939A (en) * 1985-10-28 1988-04-05 Brian J. Pollard Power amplifier
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CA2009775C (en) * 1989-03-04 1994-12-06 Brian E. Attwood Audio amplifier with phase modulated pulse width modulation
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Also Published As

Publication number Publication date
EP0951141B1 (en) 2004-09-15
JPH11355062A (ja) 1999-12-24
CA2268421A1 (en) 1999-10-14
EP0951141A2 (en) 1999-10-20
CA2268421C (en) 2003-08-05
DE69920099T2 (de) 2005-01-20
US5986498A (en) 1999-11-16
EP0951141A3 (en) 2000-01-26
DE69920099D1 (de) 2004-10-21
JP4397457B2 (ja) 2010-01-13

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