IT1239643B - Amplificatore audio ad alta efficienza per uso in alta fedelta' - Google Patents

Amplificatore audio ad alta efficienza per uso in alta fedelta'

Info

Publication number
IT1239643B
IT1239643B IT19444A IT1944490A IT1239643B IT 1239643 B IT1239643 B IT 1239643B IT 19444 A IT19444 A IT 19444A IT 1944490 A IT1944490 A IT 1944490A IT 1239643 B IT1239643 B IT 1239643B
Authority
IT
Italy
Prior art keywords
audio amplifier
loyalty
efficiency audio
high efficiency
high loyalty
Prior art date
Application number
IT19444A
Other languages
English (en)
Other versions
IT9019444A0 (it
IT9019444A1 (it
Inventor
Edoardo Botti
Guido Brasca
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 IT19444A priority Critical patent/IT1239643B/it
Publication of IT9019444A0 publication Critical patent/IT9019444A0/it
Priority to EP19910102321 priority patent/EP0443507A3/en
Priority to JP3027258A priority patent/JPH04216206A/ja
Publication of IT9019444A1 publication Critical patent/IT9019444A1/it
Application granted granted Critical
Publication of IT1239643B publication Critical patent/IT1239643B/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
    • 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
    • H03F1/02—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
IT19444A 1990-02-22 1990-02-22 Amplificatore audio ad alta efficienza per uso in alta fedelta' IT1239643B (it)

Priority Applications (3)

Application Number Priority Date Filing Date Title
IT19444A IT1239643B (it) 1990-02-22 1990-02-22 Amplificatore audio ad alta efficienza per uso in alta fedelta'
EP19910102321 EP0443507A3 (en) 1990-02-22 1991-02-19 High-efficiency audio amplifier for use in high fidelity
JP3027258A JPH04216206A (ja) 1990-02-22 1991-02-21 高い忠実度で使用するための高効率音声増幅器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT19444A IT1239643B (it) 1990-02-22 1990-02-22 Amplificatore audio ad alta efficienza per uso in alta fedelta'

Publications (3)

Publication Number Publication Date
IT9019444A0 IT9019444A0 (it) 1990-02-22
IT9019444A1 IT9019444A1 (it) 1991-08-22
IT1239643B true IT1239643B (it) 1993-11-11

Family

ID=11158050

Family Applications (1)

Application Number Title Priority Date Filing Date
IT19444A IT1239643B (it) 1990-02-22 1990-02-22 Amplificatore audio ad alta efficienza per uso in alta fedelta'

Country Status (3)

Country Link
EP (1) EP0443507A3 (it)
JP (1) JPH04216206A (it)
IT (1) IT1239643B (it)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2275384A (en) * 1993-02-22 1994-08-24 Thomson Consumer Electronics Controlling amplifier power supply in dependence on signal level
US6144258A (en) * 1998-03-27 2000-11-07 Schwenk; Tracy R. Apparatus and method for amplifying an audio signal without reference to ground
US6133792A (en) * 1998-09-17 2000-10-17 Telefonakteibolaget Lm Ericsson Method and apparatus for preventing power amplifier saturation
DE60136199D1 (de) * 2001-12-04 2008-11-27 Em Microelectronic Marin Sa Komplementär aufgebautes elektronisches System für einen geringen elektrischen Verbrauch
TWI278987B (en) 2001-12-04 2007-04-11 Em Microelectronic Marin Sa Complementary electronic system for lowering electric power consumption
GB2396266B (en) * 2002-12-13 2006-02-22 Zarlink Semiconductor Ltd Operational amplifiers
JP2008124715A (ja) 2006-11-10 2008-05-29 Nec Corp 高周波電力増幅器
DE102008025347B4 (de) * 2007-12-22 2015-07-09 Klaus Zametzky Elektronischer Verstärker
DE102008030576B3 (de) 2008-06-27 2009-12-03 Texas Instruments Deutschland Gmbh Hocheffizienter Präzisionsverstärker

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52132660A (en) * 1976-04-28 1977-11-07 Matsushita Electric Ind Co Ltd Power amplifier
JPS56104510A (en) * 1980-01-24 1981-08-20 Nippon Gakki Seizo Kk Electric power amplifier
JPS61271517A (ja) * 1985-05-27 1986-12-01 Hitachi Ltd 疑似２電源発生回路

Also Published As

Publication number Publication date
IT9019444A0 (it) 1990-02-22
EP0443507A3 (en) 1992-01-29
IT9019444A1 (it) 1991-08-22
JPH04216206A (ja) 1992-08-06
EP0443507A2 (en) 1991-08-28

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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: 19970227