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Convention Paper

High-Fidelity Pulse-Width Modulation Amplifiers Based on Novel Double-Loop Feedback Techniques

Authors: Anderskouv, N.; Nielsen, Karsten; Andersen, M. A. E.

AES Convention 100 · Paper 4258 · May 1996

Abstract

This paper addresses the realization of high-performance, high-efficiency audio amplifiers using pulse-width modulation and double-loop feedback techniques. Using both current and voltage feedback, certain advantages are realized in comparison to more conventional topologies. Both two-level (bipolar) and three-level (unipolar) PWMs are investigated in detail, in combination with the novel feedback topology, to find the optimal modulation method. A 200-W/8-ohm prototype has shown a very convincing performance with THD+N.

Details

Published in
AES Convention 100
AES Convention
100
Paper number
4258
Publication date
May 6, 1996
Session subject
Signal Processing
Affiliation
Institute of Automation, Technical University of Denmark, Lyngby, Denmark (See document for exact affiliation information.)
Type
Convention Paper