meanwell power supply comparative radiated emissions

Meanwell Power Supply Radiated Emissions Investigation

We've been doing pre-compliance scans on a customer's product…
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MPS Presentation on DC/DC Converter Myths

I wanted to share this excellent and useful presentation by Francesc…
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Spring or Star Washers for Earthing Stud?

Introduction This article started with a simple question: what…
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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…
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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…
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Happy birthday to us

Unit 3 Compliance is 5 Years Old!

Five years ago I checked in my badge at SmarDTV, turning…
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I Will Happily Spend Your Equipment Budget...

    Customers sometimes ask me "what EMC pre-compliance…
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One Ferrite Is Not Enough

This would be a great Bond film title... "So Blofeld, do you…
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Graphical Guide to EMC: Near Field Probing (free eBook)

  Download "The Graphical Guide to EMC: Near Field Probing"…
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1% For The Planet Donations FY 2020

As a member of One Percent for the Planet, we donate 1% of our…
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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…
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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…
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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…
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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…
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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…
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A Bag of Water.

This is a very useful analogy to use when considering an EMC…
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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…
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New Team Member @ Unit 3 Compliance

Unit 3 Compliance has officially doubled in size with the employment…
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Thoughts on In House Pre-Compliance Test Equipment

From an email sent to a customer who asked for some feedback…
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Low Frequency, Common Mode, Conducted Emissions

Here is an interesting problem I had working on piece of industrial…
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Choosing EMC/Radio Standards for CE/UKCA - Generic vs Specific

A short post prompted by a (summarised) request from a customer:   We'd…
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Quick Reference - Immunity Test Steps and Test Time

Here is a quick reference for common EMC immunity tests for a…
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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…
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EUT Monitoring Hardware

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