meanwell power supply comparative radiated emissions

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…
wilson e robot reads Testing Times (and so should you)

"Testing Times" Email Newsletter

You know those promotional emails that don’t ever say anything…
comparison of weee crossed out bin logos with and without bar (simple graphic)

WEEE Symbol With Or Without Bar?

To Bar, or not to Bar, that is the question: Whether 'tis nobler…
Happy birthday to us

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…
self interference demo USB3 and 2.4GHz

2.4GHz Intra-System (or Self/Platform) Interference Demonstration

In this blog we are going to take a short look at noise and interference…
RCWL-0516 - board image from github.com-jdesbonnet

Compliance Assessment of a RWCL-0516 Doppler Radar Motion Detector

I've been helping a customer out with some EMC pre-compliance…
conductive contamination underneath surface mount isolated power supply causing line to earth surge failure(marked up photo)

Surge Test Failure Due to PCB Manufacturing Process

We recently had a piece of customer equipment fail the IEC 61000-4-5…
V2 pocket EMC debug probe PCB - near field probe set - board front

Pocket EMC Debug Probe V2

This is a guide for the assembly and use of the Version 2 "Pocket…
a picture of the pin side of a UK BS1363 mains plug

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…
test report extract showing all tests passed

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…