Class D amplifier and method
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United States of America Patent
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Sep 30, 1997
Grant Date -
N/A
app pub date -
Aug 9, 1995
filing date -
Aug 9, 1995
priority date (Note) -
Expired
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Abstract
A Class D (audio) amplifier and method in which an input signal for the amplifier is pulse width modulated outside of the amplifier's feedback loop, and in which the pulse width modulated input signal and a pulsed signal from the feedback loop are summed in the feedback loop and fed back to the amplifier. The removal of the pulse width modulation stage and signal integration stage from the feedback loop improves distortion.
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