Efficiency of low power audio amplifiers and loudspeakers

SG Burrow; Duncan A Grant

doi:10.1109/30.964155

Efficiency of low power audio amplifiers and loudspeakers

SG Burrow, Duncan A Grant

Research output: Contribution to journal › Article (Academic Journal) › peer-review

18 Citations (Scopus)

1012 Downloads (Pure)

Abstract

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 contribution	Efficiency of low power audio amplifiers and loudspeakers
Original language	English
Pages (from-to)	622 - 630
Number of pages	9
Journal	IEEE Transactions on Consumer Electronics
Volume	47
Issue number	3
DOIs	https://doi.org/10.1109/30.964155
Publication status	Published - 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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10.1109/30.964155

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title = "Efficiency of low power audio amplifiers and loudspeakers",

abstract = "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.",

author = "SG Burrow and Grant, \{Duncan A\}",

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) ",

year = "2001",

month = aug,

doi = "10.1109/30.964155",

language = "English",

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pages = "622 -- 630",

journal = "IEEE Transactions on Consumer Electronics",

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AU - Burrow, SG

AU - Grant, Duncan A

N1 - 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)

PY - 2001/8

Y1 - 2001/8

N2 - 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.

AB - 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.

U2 - 10.1109/30.964155

DO - 10.1109/30.964155

M3 - Article (Academic Journal)

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VL - 47

SP - 622

EP - 630

JO - IEEE Transactions on Consumer Electronics

JF - IEEE Transactions on Consumer Electronics

IS - 3

ER -

Efficiency of low power audio amplifiers and loudspeakers

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