No matter how good your PCB layout would be, you are going to have stray capacitance and inductance. Because of that, the energy associated with voltage and current transients will couple with other traces. This will reflect in having unwanted noise on other traces.
Good PCB design, to guaranty that the end product, will comply with the EMC (ElectroMagnetic Interference) standards such as the CISPR 14, CISPR 32,  must limit the energy associated to the noise that goes out from the system. This energy, while described by the Maxwell's equations, are divided in two types, conducted and radiated noise. In this article, it will be presented a filter you can add before your system to limit the conducted noise energy that goes out from the system or try to enter into it. The project is a general purpose PCB that can be used to design an ad-hoc filter.

• Complete list of "EMC articles".

File Type	Download File		Version	Last Update	Description
	Download		1.0	16. January 2021	Article