Theoretical efficiencies of class-D power amplifiers
作者:
J.D.Martin,
期刊:
Proceedings of the Institution of Electrical Engineers
(IET Available online 1970)
卷期:
Volume 117,
issue 6
页码: 1089-1090
年代: 1970
DOI:10.1049/piee.1970.0211
出版商: IEE
数据来源: IET
摘要:
The theoretical efficiencies of class-D amplifiers are compared with those of conventional amplifiers by means of a power balance. As a result of certain similarities, it is suggested that class-AD and class-BD modes of operation should be defined. The class-D amplifier converts the collector dissipation of a conventional amplifier into load power components at a large number of modulation frequencies. When these are removed by filtering, a high overall efficiency results. The analysis presented includes an idealised treatment of the class-D amplifier with an inductive load, and enables constructive comparisons to be made.
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