Inductors and Ferrites for Use in EMC
Magnetic materials used in inductors and filters have specific functions and purposes. However, knowing which to choose can be confusing.
Common Mode Filter Design Guide
The selection of component values for common mode filters need not be a difficult and confusing process. The use of standard filter alignments can be utilized to achieve a relatively simple and straightforward design process, though such alignments may readily be modified to utilize pre-defined component values.
The Synergy of Filtering and Shielding
This article briefly describes the concept of the synergy of filtering and shielding and why knowing it is important.
How EMI Filters Are Specified For RF Performance
Don’t overlook the fact that EMI filters can be used to prevent unwanted RF noise (such as electrical fast transient burst, conducted RF, and some surges) from entering susceptible devices.
Fast Evaluation of a Filter or Shield Against an Electromagnetic Pulse
Single electromagnetic pulses like lightning, ESD, powerline transients, NEMP, etc., are generally described in time domain, while filters and shields are practically always characterized in frequency domain. This article describes a quick and handy formula and nomogram providing a fair estimate of the filter or shield response to a conducted or radiated threat.
EMC Filters Comparison Part II: π and T Filters
In this article the performance of the π and T filters is evaluated and compared to that of the CL and LC filters.
Let’s Talk About Why Filters Fail
This article looks at some of the reasons why the filters you may think will work often do not when they’re put into real circuits. So… let’s talk about why filters fail.
What Every Electronics Engineer Needs to Know About: Filters
There are many different types of filters used in electronics. These filter types include low-pass, high-pass, band-pass, band-stop (band-rejection; notch), or all-pass. They are either active or passive. In th... Read More...
S-parameters and EMI Filter Response
S-parameters are very useful to evaluate, understand, and optimize the response of your filters. If you are unfamiliar with this typical tool for RF engineers, this column is for you.
A Basic Overview of RF/EMI Filters and Filtered Connectors
When considering filters and filtered connectors to help eliminate noise issues in a system, determining the best EMI solution is based on the mechanical configuration of that system.