IT1243920B - Amplificatore audio di potenza ad alta efficienza composto da due amplificatori con unica alimentazione. - Google Patents

Amplificatore audio di potenza ad alta efficienza composto da due amplificatori con unica alimentazione.

Info

Publication number
IT1243920B
IT1243920B IT02211490A IT2211490A IT1243920B IT 1243920 B IT1243920 B IT 1243920B IT 02211490 A IT02211490 A IT 02211490A IT 2211490 A IT2211490 A IT 2211490A IT 1243920 B IT1243920 B IT 1243920B
Authority
IT
Italy
Prior art keywords
amplifiers
high efficiency
power supply
amplifier composed
power amplifier
Prior art date
Application number
IT02211490A
Other languages
English (en)
Other versions
IT9022114A0 (it
IT9022114A1 (it
Inventor
Davide Brambilla
Guido Brasca
Edoardo Botti
Original Assignee
Sgs Thomson Microelectronics
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 Sgs Thomson Microelectronics filed Critical Sgs Thomson Microelectronics
Priority to IT02211490A priority Critical patent/IT1243920B/it
Publication of IT9022114A0 publication Critical patent/IT9022114A0/it
Priority to DE69117000T priority patent/DE69117000T2/de
Priority to EP91202916A priority patent/EP0487133B1/en
Priority to US07/793,628 priority patent/US5194821A/en
Priority to KR1019910020746A priority patent/KR920011053A/ko
Priority to JP30481391A priority patent/JP3270081B2/ja
Publication of IT9022114A1 publication Critical patent/IT9022114A1/it
Application granted granted Critical
Publication of IT1243920B publication Critical patent/IT1243920B/it

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
    • 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
    • H03F1/0277—Selecting one or more amplifiers from a plurality of amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/30—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor
    • H03F3/3081—Duplicated single-ended push-pull arrangements, i.e. bridge circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Control Of Amplification And Gain Control (AREA)
IT02211490A 1990-11-20 1990-11-20 Amplificatore audio di potenza ad alta efficienza composto da due amplificatori con unica alimentazione. IT1243920B (it)

Priority Applications (6)

Application Number Priority Date Filing Date Title
IT02211490A IT1243920B (it) 1990-11-20 1990-11-20 Amplificatore audio di potenza ad alta efficienza composto da due amplificatori con unica alimentazione.
DE69117000T DE69117000T2 (de) 1990-11-20 1991-11-09 Audio-Leistungsverstärker mit hohem Wirkungsgrad mit zwei Verstärkern und einer einzigen Versorgungsspannung
EP91202916A EP0487133B1 (en) 1990-11-20 1991-11-09 High efficiency power audio amplifier comprising two amplifiers with a single feed
US07/793,628 US5194821A (en) 1990-11-20 1991-11-18 High efficiency power audio amplifiers comprising two amplifier with a single feed
KR1019910020746A KR920011053A (ko) 1990-11-20 1991-11-20 단일 피이드를 가진 두개의 증폭기를 포함하는 고효율 파워 오디오 증폭기
JP30481391A JP3270081B2 (ja) 1990-11-20 1991-11-20 単一の供給源を持つ２つの増幅器を含む高効率電力オーディオ増幅器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT02211490A IT1243920B (it) 1990-11-20 1990-11-20 Amplificatore audio di potenza ad alta efficienza composto da due amplificatori con unica alimentazione.

Publications (3)

Publication Number Publication Date
IT9022114A0 IT9022114A0 (it) 1990-11-20
IT9022114A1 IT9022114A1 (it) 1992-05-20
IT1243920B true IT1243920B (it) 1994-06-28

Family

ID=11191710

Family Applications (1)

Application Number Title Priority Date Filing Date
IT02211490A IT1243920B (it) 1990-11-20 1990-11-20 Amplificatore audio di potenza ad alta efficienza composto da due amplificatori con unica alimentazione.

Country Status (6)

Country Link
US (1) US5194821A (it)
EP (1) EP0487133B1 (it)
JP (1) JP3270081B2 (it)
KR (1) KR920011053A (it)
DE (1) DE69117000T2 (it)
IT (1) IT1243920B (it)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0613242B1 (en) * 1993-02-24 1997-10-29 STMicroelectronics S.r.l. Self-configurable dual bridge power amplifier
US5387876A (en) * 1993-12-20 1995-02-07 Peavey Electronics Corporation High efficiency amplifier with reduced switching distortion
DE69429660T2 (de) * 1994-10-07 2002-11-14 St Microelectronics Srl Brückenverstärker mit hohem Wirkungsgrad
US5937074A (en) * 1996-08-12 1999-08-10 Carver; Robert W. High back emf, high pressure subwoofer having small volume cabinet, low frequency cutoff and pressure resistant surround
US5973368A (en) * 1996-06-05 1999-10-26 Pearce; Lawrence G. Monolithic class D amplifier
EP0846367B1 (en) * 1996-06-21 2004-02-25 Koninklijke Philips Electronics N.V. Bridge amplifier with feedback over the load
DE19751645A1 (de) * 1997-11-21 1999-05-27 Cit Alcatel Zwischenverstärkereinrichtung für ein Übertragungsnetz
JP4166318B2 (ja) * 1998-03-25 2008-10-15 松下電器産業株式会社 電力増幅器
US6343113B1 (en) * 1998-11-05 2002-01-29 Thomson Licensing S.A. High impedance absolute telephone line voltage measurement circuit
US6329876B1 (en) * 1999-01-04 2001-12-11 Tripath Technology, Inc. Noise reduction scheme for operational amplifiers
EP1024592B1 (en) * 1999-01-29 2007-02-21 Alcatel Power amplifier arrangement
US6346854B1 (en) * 2000-10-31 2002-02-12 National Semiconductor Corporation Amplifier circuit with reduced DC power related turn-on and turn-off transients
US7103189B2 (en) * 2001-01-26 2006-09-05 Dell Products L.P. Power supply noise immunity for audio amplifier
US20040152516A1 (en) * 2002-09-18 2004-08-05 Incredible Technologies, Inc. Data delivery and management system and method for game machines
WO2004082133A1 (en) * 2003-03-10 2004-09-23 Koninklijke Philips Electronics N.V. Three state class d amplifier
FR2853472B1 (fr) * 2003-04-01 2005-06-24 St Microelectronics Sa Circuit amplificateur audio
EP1487100A1 (en) * 2003-06-09 2004-12-15 STMicroelectronics S.r.l. Multi-channel power amplifier with channels independently self-configuring bridge or single-ended output, particulary for audio applications
EP1487101A1 (en) 2003-06-12 2004-12-15 STMicroelectronics S.r.l. Low distortion power amplifier and method of controlling a multi-channel power amplifier
EP1496611A1 (en) * 2003-07-09 2005-01-12 STMicroelectronics S.r.l. Multi-channel power amplifier self-configuring to a bridge or single-ended output, particularly for audio applications
EP1548933B1 (en) 2003-12-23 2007-11-28 STMicroelectronics S.r.l. Method of preventing abrupt voltage changes at the outputs of a pair of amplifiers and control circuit for a pair of amplifiers self-configuring in a bridge configuration
CN100356689C (zh) * 2004-12-03 2007-12-19 普诚科技股份有限公司 用于改善d类音频放大器性能的脉冲幅度调制方法
US8081777B2 (en) * 2006-03-21 2011-12-20 Fairchild Semiconductor Corporation Volume-based adaptive biasing
US7408414B2 (en) * 2006-03-21 2008-08-05 Leadis Technology, Inc. Distributed class G type amplifier switching method
US7498880B2 (en) * 2006-03-21 2009-03-03 Leadis Technology, Inc. Class L amplifier
US8081785B2 (en) * 2006-03-21 2011-12-20 Fairchild Semiconductor Corporation High efficiency converter providing switching amplifier bias
US8330539B2 (en) * 2009-08-14 2012-12-11 Nxp B.V. Dynamic switchable mode dual bridge power amplifier
WO2015080613A1 (en) * 2013-11-28 2015-06-04 Freescale Semiconductor, Inc Low-voltage differential signaling (differential signaling) driver circuit and method of enabling and disabling a differential signaling driver circuit
KR20160142034A (ko) * 2015-06-02 2016-12-12 삼성전자주식회사 음성처리장치 및 그 제어방법
US9438181B1 (en) 2015-07-21 2016-09-06 Rockford Corporation Amplification of signals output from bridge-tied load audio amplifiers
US11271532B1 (en) 2020-08-19 2022-03-08 Cirrus Logic, Inc. Amplifiers

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3881058A (en) * 1973-05-23 1975-04-29 Gte Sylvania Inc Convertible amplifier system for single and multiple signal sources
GB1467059A (en) * 1973-05-24 1977-03-16 Rca Corp Stabilized amplifier
FR2452854A1 (fr) * 1979-03-30 1980-10-24 Thomson Brandt Poste autoradio a circuit renforcateur de puissance commutable
FR2460070A1 (fr) * 1979-06-27 1981-01-16 Thomson Csf Dispositif amplificateur pour audio-frequences
JPS5717204A (en) * 1980-07-04 1982-01-28 Fujitsu Ltd Transient sound prevention type power amplifying circuit
US4517528A (en) * 1981-10-31 1985-05-14 Sansui Electric Co., Ltd. Amplifier circuit driven by ground isolated power supply
JPS58119212A (ja) * 1982-01-11 1983-07-15 Victor Co Of Japan Ltd Ｂｔｌ増幅回路

Also Published As

Publication number Publication date
EP0487133A3 (en) 1992-09-09
EP0487133B1 (en) 1996-02-07
JPH04357704A (ja) 1992-12-10
US5194821A (en) 1993-03-16
KR920011053A (ko) 1992-06-27
EP0487133A2 (en) 1992-05-27
DE69117000T2 (de) 1996-09-19
IT9022114A0 (it) 1990-11-20
DE69117000D1 (de) 1996-03-21
JP3270081B2 (ja) 2002-04-02
IT9022114A1 (it) 1992-05-20

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19971129