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…
dc dc converter emissions before and after with notes on sources

Li-Ion Battery Charger DC/DC Converter - Radiated Emissions Problem Solving

I had a challenging EMC problem solving project in the lab this…

HDMI? More like HDM-WHY? Thoughts on Cable Shield Grounding

Ladies and gentlemen, I present this week's episode of "Crimes…

EMC Immunity Testing EUT Monitoring Software

One of the hardest parts of EMC immunity testing is monitoring…
selection table from 300 019-1-0

How Do I Choose Vibration Tests For My Product?

I... I love the way my product's made We all worked hard…

1% For The Planet - Donations FY 2019

As part of our membership of 1% For The Planet we've made donations…
ukca mark

Brexit & UKCA Mark Updates

Because of the United Kingdom leaving the EU, the CE Mark will…
EMC Certification is not just a rubber stamp by the test lab!

"Do You Do Certification?"

"Do you do certification or just pre-testing?" "Can you certify…

ESD Latch Up Behaviour in Diodes Inc. Power Switch Parts

A new customer came to me with their product that was having…
Schaffner/Teseq NSG 5500 test system

New Automotive Test Capabilities ISO 7637-2

The best day is new equipment day 🙂 We are continuing to…
By James Heilman, MD - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=34056919

Standards Update for Bluetooth/Zigbee/WLAN Radios

There's a new v2.2.2 revision of ETSI EN 300 328 - the 2.4GHz…
10g 16ms half sine shock test profile

EN 60068-2-27 Shock Testing of Anti-Shock Rubber Mounts

We've been vibration and shock testing of some heavy equipment…
iso 7637-2 pulse 1 vs iec 61000-4-5 waveform comparison

IEC Surge/EFT Generators for ISO 7637-2 Automotive Pre-Compliance

Intro Like most long articles, this started off as a short one. It…

LVD Voltage Limits are RMS + Thoughts on Marginal Voltages

The LVD a.c. voltage limits are defined in terms of rms. From…
a roll of Wurth Elektronik copper tape - the scoundrels last resort?

So You Want To Be An EMC Engineer?

  "Abandon hope all ye who enter here" - Sign above…

Compromise EFT Test Setup

When the customer supplied cable isn't long enough to fit inside…
By James Heilman, MD - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=34056919

Ventilator Projects and EMC Testing (EN 60601-1-2:2014)

Summary If you haven't already, check out part 1 of this…
By James Heilman, MD - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=34056919

Ventilator Projects and EMC Regulations (UK)

SUMMARY: 1. CE marking probably won't be necessary for UK…