Working with EMI and RFI

Many electronic devices emit electromagnetic waves. The electromagnetic waves are needed so that the appliances will work correctly. However, electromagnetic waves can be damaging. They can affect humans, and they can also interfere with other electronic devices that are similar. The negative influence of electromagnetic waves is referred to as Electromagnetic Interference (EMI) and Radio Frequency Interference (RFI).

Both EMI and RFI can cause malfunctions in electronic devices. Precautions have been implemented to prevent damages from EMI and RFI referred to as EMI shielding and RFI shielding. In most cases, this type of shielding comes in the form of a spray, which is acrylic based. This spray can be applied to plastic electronics housings.

Highly pure metals are another form of EMI and RFI shielding. Metals such as silver and copper can be added to the sprays. The metals in the spray can reduce and sometimes eliminate EMI and RFI. EMI and RFI shielding is also available in the form of paints and brushes.

Many industries utilize EMI and RFI shielding. Spray on agents and other solutions has made EMI and RFI shielding more attainable for businesses in all different areas. Telecommunications companies use the shielding to ensure a clearer reception. The medical field has to use EMI and RFI shielding to ensure they are meeting FDA regulations. The FDA mandates that medical machinery cannot be affected by cell phones and other electronic devices.