
Meanwell Power Supply Radiated Emissions Investigation
We've been doing pre-compliance scans on a customer's product…

MPS Presentation on DC/DC Converter Myths
I wanted to share this excellent and useful presentation by Francesc…

Spring or Star Washers for Earthing Stud?
Introduction
This article started with a simple question: what…

"Testing Times" Email Newsletter
You know those promotional emails that don’t ever say anything…

WEEE Symbol With Or Without Bar?
To Bar, or not to Bar, that is the question:
Whether 'tis nobler…

Unit 3 Compliance is 5 Years Old!
Five years ago I checked in my badge at SmarDTV, turning…

I Will Happily Spend Your Equipment Budget...
Customers sometimes ask me "what EMC pre-compliance…

One Ferrite Is Not Enough
This would be a great Bond film title...
"So Blofeld, do you…

Graphical Guide to EMC: Near Field Probing (free eBook)
Download "The Graphical Guide to EMC: Near Field Probing"…

1% For The Planet Donations FY 2020
As a member of One Percent for the Planet, we donate 1% of our…

2.4GHz Intra-System (or Self/Platform) Interference Demonstration
In this blog we are going to take a short look at noise and interference…

Compliance Assessment of a RWCL-0516 Doppler Radar Motion Detector
I've been helping a customer out with some EMC pre-compliance…

Surge Test Failure Due to PCB Manufacturing Process
We recently had a piece of customer equipment fail the IEC 61000-4-5…

Pocket EMC Debug Probe V2
This is a guide for the assembly and use of the Version 2 "Pocket…

Checking British Mains Plug License Number
BSI License Number
BSI has a facility for checking the license…

A Bag of Water.
This is a very useful analogy to use when considering an EMC…

Thoughts: First Time Pass Rate
This question popped up on one of the email lists that I'm a…

New Team Member @ Unit 3 Compliance
Unit 3 Compliance has officially doubled in size with the employment…

Thoughts on In House Pre-Compliance Test Equipment
From an email sent to a customer who asked for some feedback…

Low Frequency, Common Mode, Conducted Emissions
Here is an interesting problem I had working on piece of industrial…

Choosing EMC/Radio Standards for CE/UKCA - Generic vs Specific
A short post prompted by a (summarised) request from a customer:
We'd…

Quick Reference - Immunity Test Steps and Test Time
Here is a quick reference for common EMC immunity tests for a…

Labview VI For Calculating EMC Immunity Test Frequency Steps and Test Time
This replaces an Excel macro I've used in the past with something…

EUT Monitoring Hardware
For Equipment Under Test (EUT) monitoring during EMC tests we've…