CA1033818A - Pulse width modulated amplifier - Google Patents

Pulse width modulated amplifier

Info

Publication number
CA1033818A
CA1033818A CA238,575A CA238575A CA1033818A CA 1033818 A CA1033818 A CA 1033818A CA 238575 A CA238575 A CA 238575A CA 1033818 A CA1033818 A CA 1033818A
Authority
CA
Canada
Prior art keywords
pulse width
width modulated
modulated amplifier
amplifier
pulse
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
Application number
CA238,575A
Other languages
English (en)
French (fr)
Inventor
Osamu Hamada
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.)
Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Application granted granted Critical
Publication of CA1033818A publication Critical patent/CA1033818A/en
Expired legal-status Critical Current

Links

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
    • 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
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
CA238,575A 1974-11-02 1975-10-29 Pulse width modulated amplifier Expired CA1033818A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP49126802A JPS5829646B2 (ja) 1974-11-02 1974-11-02 パルス幅変調増幅器

Publications (1)

Publication Number Publication Date
CA1033818A true CA1033818A (en) 1978-06-27

Family

ID=14944309

Family Applications (1)

Application Number Title Priority Date Filing Date
CA238,575A Expired CA1033818A (en) 1974-11-02 1975-10-29 Pulse width modulated amplifier

Country Status (7)

Country Link
US (1) US4059807A (de)
JP (1) JPS5829646B2 (de)
CA (1) CA1033818A (de)
DE (1) DE2548907C2 (de)
FR (1) FR2290091A1 (de)
GB (1) GB1505088A (de)
NL (1) NL186128C (de)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4144502A (en) * 1976-10-30 1979-03-13 Sansui Electric Co., Ltd. Negative feedback amplifiers of PWM-type
IT1079588B (it) * 1977-02-14 1985-05-13 Sits Soc It Telecom Siemens Generatore di chiamata statico per sistemi di telecomunicazioni
JPS59814Y2 (ja) * 1977-04-22 1984-01-11 ブライアン・ア−ネスト・アトウツド Ｄ級増幅器
US4257007A (en) * 1979-04-16 1981-03-17 The United States Of America As Represented By The Secretary Of The Navy Active high-power bandpass filter
JPS58130617A (ja) * 1982-01-29 1983-08-04 Nippon Gakki Seizo Kk パルス幅変調回路
US4674119A (en) * 1984-04-10 1987-06-16 Itt Corporation Wide-band high voltage amplifier for telephone exchange subscriber line interface utilizing low voltage control circuitry
JPS63277327A (ja) * 1987-05-06 1988-11-15 Akizo Kubota レ−キド−ザ−のレ−キ
JPH0297438U (de) * 1989-01-13 1990-08-02
US5451900A (en) * 1993-03-17 1995-09-19 Kabushiki Kaisha Toshiba Pulse width modulation circuit
TW437161B (en) * 1995-08-30 2001-05-28 Sony Corp Audio signal amplifying apparatus
US5767740A (en) * 1996-09-27 1998-06-16 Harris Corporation Switching amplifier closed loop dual comparator modulation technique
US5963086A (en) * 1997-08-08 1999-10-05 Velodyne Acoustics, Inc. Class D amplifier with switching control
WO1999008378A2 (en) * 1997-08-12 1999-02-18 Koninklijke Philips Electronics N.V. Device for amplifying digital signals
US6064259A (en) * 1998-07-24 2000-05-16 Nikon Corporation Of America High power, high performance pulse width modulation amplifier
US7212787B2 (en) * 2001-11-29 2007-05-01 Nasaco Electronics (Hong Kong) Ltd. Wireless audio transmission system
US6636124B1 (en) 2001-11-30 2003-10-21 Analog Technologies, Inc. Method and apparatus for accurate pulse width modulation
US7170360B2 (en) 2003-01-31 2007-01-30 Infineon Technologies Ag Device and method for digital pulse width modulation
DE10327620B4 (de) * 2003-01-31 2014-09-11 Lantiq Deutschland Gmbh Vorrichtung und Verfahren zur digitalen Pulsweiten-Modulation
US20040232978A1 (en) * 2003-05-23 2004-11-25 Easson Craig Alexander Filterless class D amplifiers using spread spectrum PWM modulation
TWI336166B (en) * 2006-02-20 2011-01-11 Realtek Semiconductor Corp Digital amplifier and thereof method
DE102006011448B4 (de) * 2006-03-13 2013-08-01 Austriamicrosystems Ag Schaltungsanordnung und Verfahren zum Bereitstellen eines Taktsignals mit einem einstellbaren Tastverhältnis
KR100710509B1 (ko) * 2006-04-11 2007-04-25 남상욱 펄스면적변조를 이용한 고효율 선형 전력증폭기 시스템
KR101349002B1 (ko) * 2006-09-11 2014-01-09 세미컨덕터 콤포넨츠 인더스트리즈 엘엘씨 증폭 회로 및 증폭 방법
KR20100008749A (ko) * 2008-07-16 2010-01-26 삼성전자주식회사 스위칭 파워 증폭 장치 및 그 제어 방법
JP6260587B2 (ja) * 2015-06-29 2018-01-17 トヨタ自動車株式会社 電源装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3336538A (en) * 1964-08-13 1967-08-15 Norman H Crowhurst Two-state power amplifier with transitional feedback
US3585517A (en) * 1968-05-01 1971-06-15 Westinghouse Electric Corp High-efficiency power amplifier
US3845402A (en) * 1973-02-15 1974-10-29 Edmac Ass Inc Sonobuoy receiver system, floating coupler

Also Published As

Publication number Publication date
FR2290091B1 (de) 1982-04-30
FR2290091A1 (fr) 1976-05-28
NL186128B (nl) 1990-04-17
DE2548907C2 (de) 1984-06-14
JPS5152765A (de) 1976-05-10
NL186128C (nl) 1990-09-17
JPS5829646B2 (ja) 1983-06-24
US4059807A (en) 1977-11-22
GB1505088A (en) 1978-03-22
NL7512879A (nl) 1976-05-04
DE2548907A1 (de) 1976-05-13

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