Current-Driven Switch-Mode Audio Power Amplifiers

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

Current-Driven Switch-Mode Audio Power Amplifiers

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

Technical University of Denmark

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-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 language	English
Title of host publication	Proceedings of 132nd AES Convention
Number of pages	7
Publisher	AES
Publication date	2012
Publication status	Published - 2012
Event	AES 132nd Convention - Budapest Congress & World Trade Center, Budapest, Hungary Duration: 26 Apr 2012 → 29 Apr 2012 http://www.aes.org/

Conference

Conference	AES 132nd Convention
Location	Budapest Congress & World Trade Center
Country/Territory	Hungary
City	Budapest
Period	26/04/2012 → 29/04/2012
Internet address	http://www.aes.org/

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@inproceedings{ddf411c5d97d498d9e08e5a523e9b749,

title = "Current-Driven Switch-Mode Audio Power Amplifiers",

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 \%.",

author = "Arnold Knott and Buhl, \{Niels Christian\} and Andersen, \{Michael A. E.\}",

year = "2012",

language = "English",

booktitle = "Proceedings of 132nd AES Convention",

publisher = "AES",

note = "AES 132nd Convention ; Conference date: 26-04-2012 Through 29-04-2012",

url = "http://www.aes.org/",

}

TY - GEN

T1 - Current-Driven Switch-Mode Audio Power Amplifiers

AU - Knott, Arnold

AU - Buhl, Niels Christian

AU - Andersen, Michael A. E.

PY - 2012

Y1 - 2012

N2 - 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 %.

AB - 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 %.

M3 - Article in proceedings

BT - Proceedings of 132nd AES Convention

PB - AES

T2 - AES 132nd Convention

Y2 - 26 April 2012 through 29 April 2012

ER -

Current-Driven Switch-Mode Audio Power Amplifiers

Abstract

Conference

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