This paper looks at the load presented to audio amplifiers by real transducers. We consider the power losses in class-AB and class-D amplifier topologies, and determine that in order to predict the efficiency it is necessary to consider the amplifier/transducer combination. The ability of the class-D amplifier to recycle quadrature load current offers new ways to improve efficiency.
|Translated title of the contribution||Efficiency of low power audio amplifiers and loudspeakers|
|Title of host publication||20th International Conference on Consumer Electronics, ICCE 2001, Los Angeles, USA, 19-21 June|
|Publisher||Institute of Electrical and Electronics Engineers (IEEE)|
|Pages||322 - 323|
|Number of pages||2|
|Publication status||Published - 19 Jun 2001|