DocumentCode
3266008
Title
Efficiency of low power audio amplifiers and loudspeakers
Author
Burrow, S. ; Grant, D.
Author_Institution
Bristol Univ., UK
fYear
2001
fDate
2001
Firstpage
322
Lastpage
323
Abstract
This paper looks at the load presented to audio amplifiers by real transducers. We consider the power losses in class-AB and class-D amplifier topologies, and determine that in order to predict the efficiency it is necessary to consider the amplifier/transducer combination. The ability of the class-D amplifier to recycle quadrature load current offers new ways to improve the efficiency
Keywords
audio-frequency amplifiers; electric reactance; losses; loudspeakers; network topology; transducers; amplifier/transducer; class-AB amplifier topology; class-D amplifier topology; loudspeakers; low power audio amplifiers; power losses; quadrature load current; quadrature load current recycling; reactive loads; sound reproduction; transducers; Acoustic transducers; Electric resistance; Filters; Frequency; High power amplifiers; Impedance; Loudspeakers; Operational amplifiers; Power amplifiers; Topology;
fLanguage
English
Publisher
ieee
Conference_Titel
Consumer Electronics, 2001. ICCE. International Conference on
Conference_Location
Los Angeles, CA
Print_ISBN
0-7803-6622-0
Type
conf
DOI
10.1109/ICCE.2001.935328
Filename
935328
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