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Convention Paper

Analysis, Design and Assessment of Class A, B, AB, G and H Audio Power Amplifier Output Stages Based on Matlab Software

Authors: Noceti Filho, Sidnei; Bortoni, Rosalfonso; Seara, Rui

AES Convention 110 · Paper 5358 · May 2001

Abstract

A procedure for analyzing, designing and assessing audio power amplifier output stages operating in class A, B, AB, G and H with reactive loads is presented. This study considers steady-state sinusoidal analysis for BJT, IGBT and MOSFET technologies. Electrical-mechanical-acoustical models of loudspeakers and enclosures are used whose parameters are obtained through the Thiele-Small model. An equivalent electrical-thermal model for the transistor-heatsink-ambience associated with the instantaneous and average powers is used for designing the power stage. A MATLAB software has been developed, which provides a considerable support to the designer for all required phases in an audio power amplifier output stage design.

Details

Published in
AES Convention 110
AES Convention
110
Paper number
5358
Publication date
May 6, 2001
Session subject
Signal Processing for Audio
Affiliation
Department of Electrical Engineering, Federal University of Santa Catarina, Florianópolis, Brazil ; Biquad Tecnologia Ltda., Santa Rita do Sapucaí, Brazil (See document for exact affiliation information.)
Type
Convention Paper