Useful Test Adapters for EMC Testing and Electronics Development

Working in an EMC test lab means I get to see all kinds of equipment. No two devices are ever the same so I have to make up / adapt cables to interface various devices. If you work with a wide range of products or just want a bit more versatility in your lab then read on.

I have no affiliation to any of these products, I just use them a lot.

Clever Little Boxes

These versatile little test adapters from Clever Little Boxes are great for being able to quickly hook up one thing to another. As you can see they come in all shapes and sizes. I’ve got a box full of various ones, including the ones shown in the above photo.

Go Bananas

The ubiquitous 4mm “banana” plug and socket is super common on power supplies and other kinds of test equipment. They give a surprisingly low resistance connection for their size which, along with their simplicity, goes a long way to explaining their popularity.

If you’ve ever made up a cable assembly with standard connectors then you know they can be a pain. That’s why I really like these connectors that have a spring loaded gate that accepts a bare wire up to 2.5mm^2.

I’ve just got the standard red and black colours to keep things simple. These work well when paired with a set of crocodile clips

Get Me a Crocodile Sandwich…

I really like to pair these crocodile clips with the 4mm connectors above for super versatile connections to anything big like metal frames or enclosures of equipment.

Hook and Spring

Big numb adapters get a bit crowded when trying to connect onto individual connector pins or component legs. That’s where these teeny spring clips come in. I’ve often ended up with one of my development boards looking like an electronic porcupine with these stuck all over them!

 

Something More Permanent for Sir?

If I’m wiring up anything using mains voltages that I want to be a bit more permanent and safe then my go to are these spring terminal blocks from Wago. They are like choc block terminal strips with the main exception that these are not rubbish. Rated at 32A they can accept much larger wires that you would think and the spring clips retain the wires with a remorseless grip.

They come in multiple ways although I tend to use 2, 3 and 5 by default. Best of all they are ridiculously cheap. Just don’t get your thumbnail caught underneath the orange lever when it clicks down otherwise you’ll be using some language that is distinctly NSFW.

So “be prepared” (Scout motto) and happy testing.

James

 

p.s. don’t get me started on the adaptor vs adapter debate.