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Content posted in March 2003
Class-D promotes efficiency in audio amplifiers
3/26/2003   Post a comment
The class-D audio amplifier is much more efficient than a class-AB amplifier because the output MOSFETs switch from very high impedance to very low impedance, operating nanoseconds in the active region. With this technique very little power is lost in the output stage. But many people still do not understand the basics of how a class-D amplifier works and what makes it very efficient. This Texas Instruments technologist gives this analysis.

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