A design process in the selection of an AC mains filter for factory automation systems.

When a designer needs to select a filter, they often simply change a capacitor or inductor that has proven successful in a previous project. He may also spend days with a network analyzer measuring source and load impedances - a very time-consuming process.
 
If this sounds familiar and you want a faster, more effective method, read Design Process for Selecting an AC Powerline Filter for Factory Automation Systems.


 

In this article:

• Series vs. shunt attenuation
• Matrix of impedance mismatch between source and load
• Test methods in the laboratory
• Measurement of common-mode and push-pull noise levels