The Difference Between EMI and EMC: What You Need to Know

EMC vs EMI Testing, What’s the Difference?

There is often confusion about the difference between EMI and EMC. In this blog post, we will break it down for you and explain what you need to know. EMI stands for Electromagnetic Interference, and EMC stands for Electromagnetic Compatibility. They are both important concepts when it comes to electronic equipment.

If you are looking to get certified for your products, you need to be aware of the difference between these two terms.

What is EMI (Electromagnetic Interference)?

EMI or Electromagnetic Interference is the interference that is caused by electronic equipment. This can be in the form of noise, radiation, or current. It can be disruptive and cause problems for other electronic equipment.
For example, if a wifi router is in use in your home or office and bluetooth speakers are also being used, you may experience interference between the two devices. This is because they are both using electromagnetic radiation to function.
EMI can also be caused by things like power lines, motors, and fluorescent lights. It is important to take steps to protect your electronic equipment from EMI if you are in an environment with a lot of electromagnetic radiation.
This is why most electronic devices contain shielding or an internal lining that absorbs as much radiation as possible to minimize EMI in other products.

Sources of EMI

EMI can come from both natural and man-made sources. The earth, for example, generates lightning and the sun produces solar radiation, both of which may influence how well electronics function.
Devices that can cause electromagnetic interference (EMI) include:

Light bulbs

  • Cellphones 
  • Lights, especially fluorescent and LED
  • Televisions
  • AM/FM radios
  • Motors and generators
  • Baby monitors
  • Computers
  • Wifi routers
  • Bluetooth speakers
  • Other electronic products

What is EMC (Electromagnetic Compatibility)?

EMC or Electromagnetic Compatibility is the ability of electronic equipment to operate correctly in the presence of electromagnetic interference. This means that your equipment must be able to function properly even when it is exposed to interference from other devices.

Why is EMC important?

EMC compliance testing is important because it ensures that your equipment will not be disrupted by electromagnetic interference. This can cause problems for both you and your customers. Every electronic device generates electromagnetic energy and electric noise, which interrupts cables and wires and causes problems for connected devices. It is important to make sure that your products are certified for EMC so that you can ensure their quality and compatibility.

Questions about EMI and EMC?

If you have questions about EMI and EMC or you are looking for a reliable and experienced EMC testing lab, contact us today!

We can help you get your products certified and ensure their quality.