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Comparison of USB Chargers (Apple, Samsung, Counterfeit)


Ken Shirriff

This blog post is a few years old, but remains very interesting to see the difference in performance among USB wall chargers. Ever wonder about the difference between the expensive name-brand charger and the cheap imitation? This article gives in depth examination of the noise emanating from these devices. An interesting side effect of unwanted electrical noise from the chargers is that the touch-screen on your device can become unresponsive or erratic in some cases.

The EMC Blog


Arturo Mediano

Arturo Mediano is a professor at University of Zaragoza (Spain) and founder of The HF-Magic Lab®, a specialized laboratory for design, diagnostic, troubleshooting, and training in the EMI/EMC/SI and RF fields. He is also an instructor for Besser Associates (CA, USA) offering public and on site courses in EMI/EMC/SI/RF subjects.

Keysight RF Test Blog


Ben Zarlingo

This blog explores various topics in RF test and measurement, from the latest equipment to best practice techniques to ensure consistent results and understand uncertainty limitations.

My name is Ben Zarlingo and I'm an applications specialist for Keysight Technologies. I've been an electrical engineer working in test & measurement for several decades now, mostly in signal analysis. For the past 20 years I've been involved primarily in wireless and other RF testing.

EMC Page on Williamson Labs Site


Glen A. Williamson

Background information on electromagnetic compatibility (EMC).

As practiced by many: designing for, and understanding EMC has been, and remains an ART more than a Science. However, it needn't be that way; using what you have learned in the proceeding pages, this page will attempt to remove some of the mystery from this subject--but NOT all!

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