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Lesson 5: “Solve Power Distribution Problems” discusses the problems we might have in making power available around our boards. The two most common problems are (a) making sure there is enough charge available at the time and point of switching, and (b) making sure that “ground bounce” doesn’t negatively impact the signal. The solution to these problems involves bypass capacitors. But then Doug discusses the questions of how many, what size, where to put them, why, and the role ESR plays in all of this.