16
Grounding and practical matters
Audio amplifier PCB design
This section addresses the special 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 that are related to PCB design, such as grounding, safety, reliability, etc., 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 due to crosstalk between ...
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