Chapter 13. Noise and Grounding
13.1. Audio Amplifier Printed Circuit Board Design
This section addresses the special printed circuit board (PCB) design problems presented by power amplifiers, particularly those operating in Class-B. All power amplifier systems contain the power-amp stages themselves, and usually associated control and protection circuitry; most also contain small-signal audio sections such as balanced input amplifiers, subsonic filters, output meters, and so on.
Other topics related to PCB design, such as grounding, safety, and reliability, are also dealt with.
The performance of an audio power amplifier depends on many factors, but in all cases the detailed design of the PCB is critical because of the risk of inductive distortion ...
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