Cool audio power

I have always thought that some kinds of information cry out to be presented graphically. A case in point is the ultimate destination of the power that an amplifier draws from its supply. Some goes usefully into the load, some is dissipated in the power semiconductors, and a little is lost in drivers, emitter resistors, and so on. All these quantities vary strongly with the percentage power output, and they overlap to give a confused and uninformative picture if plotted on a normal graph. The alternative method of power-partition diagrams, presented here, shows at once how much is power is taken and precisely where it goes; this is particularly important for more complex output stages, such as Class-G types. The idea is not ...

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