Patent:  Circuits and Methods for Amplifying Signals

Apple’s sixth granted patent of the day generally relates to compensation circuitry in electronic circuits and devices and more particularly to a power supply compensation circuit in class D modulators.

Apple’s patent FIG. 10 shows a schematic of a compensation circuit for a class D amplifier according to the present invention.

Apple lists Douglas M. Farrar (Los Altos, CA) and Wendell B. Sander (Los Gatos, CA) as the inventors of this granted patent which was originally filed for in June 2006.

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