Current-Driven Switch-Mode Audio Power Amplifiers

Arnold Knott, Niels Christian Buhl, Michael A. E. Andersen

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

The conversion of electrical energy into sound waves by electromechanical transducers is proportional to the current through the coil of the transducer. However virtually all audio power amplifiers provide a controlled voltage through the interface to the transducer. This paper is presenting a switch-mode audio power amplifier not only providing controlled current but also being supplied by current. This results in an output filter size reduction by a factor of 6. The implemented prototype shows decent audio performance with THD + N below 0.1 %.
Original languageEnglish
Title of host publicationProceedings of 132nd AES Convention
Number of pages7
PublisherAES
Publication date2012
Publication statusPublished - 2012
EventAES 132nd Convention - Budapest Congress & World Trade Center, Budapest, Hungary
Duration: 26 Apr 201229 Apr 2012
http://www.aes.org/

Conference

ConferenceAES 132nd Convention
LocationBudapest Congress & World Trade Center
CountryHungary
CityBudapest
Period26/04/201229/04/2012
Internet address

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