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Class D Audio Amplifier |
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| This brochure explains the principle of a class D audio amplifier and
the function of the choke in the output filter. In an International
Rectifier demo board, one of the two metal alloy powder toroids is
replaced by a gapped ferrite toroid (with such a number of turns that
inductance is equal). Performance is compared and about equal. The
choke design procedure is explained with gapped toroid I²L curves.
Filter design basics are also given in the annex. |
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Erscheinungsdatum: October 2006
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