Fundamentals

This article analyzes the V-I characteristic of a varistor and shows it is more appropriate to treat the varistor as a current dependent resistance rather than the conventionally taught voltage dependent resistance. Spice circuit examples are given, based on a current dependent resistance varistor model.

This article discusses the origins, justification, and interrelations between some of basic EMC rules regarding the highest significant frequency (bandwidth) present in digital signals, definition of the electrically short structures, and the transmission line criterion.

Understanding the Process to Create Standardized Symbols and How It Effects Your On-product Warnings The...

What is an antenna Balun? The term balun is a portmanteau (a blending of two words) of balanced/unbalanced – BAL-UN.

In this article the performance of the π and T filters is evaluated and compared to that of the CL and LC filters.

We’ve queried training resources in our industry to provide you with an overview of free or affordable solutions to meet your training goals in 2020.

For engineers new to the field of EMC, the road can look very steep indeed. But, with a plan (and some work!), you can grow from EMC-novice to EMC-expert.

International standards are important to product manufacturers for several reasons; they help with safety, compliance with varying regional regulations, and the ability to export across borders.

Product markings and labels provide information about the product, installation, and use. The markings and labels can also provide warnings to avoid hazardous energy transfer to a body part. The product safety aspects of markings for identification, ratings, functions, connections, and warnings are described.

Between WEEE, RoHS, REACH and other environmental directives, regulatory compliance labels for handling and disposing of certain products is less intuitive than it seems.