Efficiency of low power audio amplifiers and loudspeakers

Research output: Contribution to journalArticle (Academic Journal)peer-review

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In this paper we look 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 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 efficiency.
Translated title of the contributionEfficiency of low power audio amplifiers and loudspeakers
Original languageEnglish
Pages (from-to)622 - 630
Number of pages9
JournalIEEE Transactions on Consumer Electronics
Issue number3
Publication statusPublished - Aug 2001

Bibliographical note

A postprint version of a paper published by the Institute of Electrical and Electronics Engineers (IEEE). Copyright 2001 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.

The support of the EPSRC for this work is gratefully acknowledged. (GR/M97787)


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