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FR2274170A1 - Amplificateur de signaux a largeur d'impulsions modulee - Google Patents

Amplificateur de signaux a largeur d'impulsions modulee

Info

Publication number
FR2274170A1
FR2274170A1 FR7517821A FR7517821A FR2274170A1 FR 2274170 A1 FR2274170 A1 FR 2274170A1 FR 7517821 A FR7517821 A FR 7517821A FR 7517821 A FR7517821 A FR 7517821A FR 2274170 A1 FR2274170 A1 FR 2274170A1
Authority
FR
France
Prior art keywords
pulse width
signal amplifier
width signal
modulated pulse
modulated
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
Application number
FR7517821A
Other languages
English (en)
Other versions
FR2274170B1 (fr
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
Publication of FR2274170A1 publication Critical patent/FR2274170A1/fr
Application granted granted Critical
Publication of FR2274170B1 publication Critical patent/FR2274170B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K9/00—Demodulating pulses which have been modulated with a continuously-variable signal
    • H03K9/08—Demodulating pulses which have been modulated with a continuously-variable signal of duration- or width-mudulated pulses or of duty-cycle modulated pulses
    • 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
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/08—Duration or width modulation ; Duty cycle modulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
FR7517821A 1974-06-06 1975-06-06 Amplificateur de signaux a largeur d'impulsions modulee Granted FR2274170A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP49064304A JPS5754968B2 (fr) 1974-06-06 1974-06-06

Publications (2)

Publication Number Publication Date
FR2274170A1 true FR2274170A1 (fr) 1976-01-02
FR2274170B1 FR2274170B1 (fr) 1978-05-19

Family

ID=13254361

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7517821A Granted FR2274170A1 (fr) 1974-06-06 1975-06-06 Amplificateur de signaux a largeur d'impulsions modulee

Country Status (8)

Country Link
US (1) US4004246A (fr)
JP (1) JPS5754968B2 (fr)
CA (1) CA1034215A (fr)
DE (1) DE2524072C2 (fr)
FR (1) FR2274170A1 (fr)
GB (1) GB1495435A (fr)
IT (1) IT1038760B (fr)
NL (1) NL189330C (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2377116A1 (fr) * 1977-01-07 1978-08-04 Communications Patents Ltd Perfectionnements aux systemes amplificateurs et relatifs a ceux-ci
EP0072181A2 (fr) * 1981-08-05 1983-02-16 The Marconi Company Limited Modulateur de largeur d'impulsions

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4164714A (en) * 1977-09-26 1979-08-14 Harris Corporation Polyphase PDM amplifier
US4360707A (en) * 1980-11-24 1982-11-23 Cts Corporation Digitally driven combination coils for electrodynamic acoustic transducers
US4441081A (en) * 1981-12-22 1984-04-03 International Business Machines Switching power driving circuit arrangement
US4510456A (en) * 1983-09-28 1985-04-09 Harris Corporation PDM Amplifier having distortion reduction circuit
JPH0728181B2 (ja) * 1988-12-28 1995-03-29 パイオニア株式会社 パルス幅変調増幅回路
EP0616422B1 (fr) * 1993-03-17 1999-05-12 Kabushiki Kaisha Toshiba Circuit à modulation de largeur d'impulsions
DE19512383A1 (de) * 1995-04-01 1996-10-10 Nokia Deutschland Gmbh Klasse-D-Leistungsverstärker
US5767740A (en) * 1996-09-27 1998-06-16 Harris Corporation Switching amplifier closed loop dual comparator modulation technique
US5949282A (en) * 1998-02-25 1999-09-07 National Semiconductor Corporation Class D amplifier no low pass filter feedback with zero phase delay
US6788792B1 (en) * 1998-06-26 2004-09-07 Yamaha Corporation Device for amplitude adjustment and rectification made with MOS technology
US6049248A (en) * 1998-12-23 2000-04-11 Lucent Technologies Inc. Method and apparatus for generating a driver signal for use by a non-linear class S amplifier for producing linear amplification
US6441685B1 (en) 2000-03-17 2002-08-27 Jl Audio, Inc. Amplifier circuit and method for providing negative feedback thereto
US6943623B2 (en) * 2002-06-11 2005-09-13 Nokia Corporation Amplification circuitry
GB2389724B (en) * 2002-06-11 2006-02-01 Nokia Corp Amplification circuitry

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL291323A (fr) * 1962-04-11
US3400334A (en) * 1964-11-12 1968-09-03 Ling Temco Vought Inc Solid state switching type linear amplifier
US3376515A (en) * 1965-03-05 1968-04-02 William G. Dilley Single-ended, push-pull transistor audio amplifier
US3585517A (en) * 1968-05-01 1971-06-15 Westinghouse Electric Corp High-efficiency power amplifier
US3579132A (en) * 1969-11-14 1971-05-18 Ltv Ling Altec Inc Class {37 d{38 {0 linear audio amplifier

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2377116A1 (fr) * 1977-01-07 1978-08-04 Communications Patents Ltd Perfectionnements aux systemes amplificateurs et relatifs a ceux-ci
EP0072181A2 (fr) * 1981-08-05 1983-02-16 The Marconi Company Limited Modulateur de largeur d'impulsions
EP0072181A3 (fr) * 1981-08-05 1983-11-30 The Marconi Company Limited Modulateur de largeur d'impulsions

Also Published As

Publication number Publication date
CA1034215A (fr) 1978-07-04
NL7506710A (nl) 1975-12-09
NL189330B (nl) 1992-10-01
GB1495435A (en) 1977-12-21
US4004246A (en) 1977-01-18
NL189330C (nl) 1993-03-01
JPS5754968B2 (fr) 1982-11-20
DE2524072C2 (de) 1984-06-20
FR2274170B1 (fr) 1978-05-19
IT1038760B (it) 1979-11-30
DE2524072A1 (de) 1975-12-18
JPS50156860A (fr) 1975-12-18

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Legal Events

Date Code Title Description
ST Notification of lapse