Current-Driven Switch-Mode Audio Power Amplifiers

Knott A, Buhl NC, Andersen MAE. Current-Driven Switch-Mode Audio Power Amplifiers. In: AES Convention 132. Audio Engineering Society; 2012. Paper 8629. Available from: https://aes.org/publications/elibrary-page/?id=16267

@inproceedings{Knott2012_16267,
  author = {Knott, Arnold and Buhl, Niels Christian and Andersen, Michael A.E.},
  title = {{Current-Driven Switch-Mode Audio Power Amplifiers}},
  booktitle = {AES Convention 132},
  note = {Paper 8629},
  year = {2012},
  month = apr,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=16267}
}

TY  - CPAPER
TI  - Current-Driven Switch-Mode Audio Power Amplifiers
AU  - Knott, Arnold
AU  - Buhl, Niels Christian
AU  - Andersen, Michael A.E.
T2  - AES Convention 132
M1  - Paper 8629
PY  - 2012
DA  - 2012/04/06
UR  - https://aes.org/publications/elibrary-page/?id=16267
PB  - Audio Engineering Society
LA  - en
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 %.
ER  -