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The electromagnetic waves generated by electronic devices may negatively affect other, similar, electronic devices. Such affects are called Electromagnetic Interference (EMI) and Radio Frequency Interference (RFI). EMI and RFI may cause malfunctions in electronic devices. Specifically, EMI and RFI cause suppression of signals generated internally in a device, external ambient interference with equipment operation, or emissions generated internally that will interfere with equipment operation. The world today is increasingly electronic, with millions of waves and signals floating through the air at any given moment. Therefore, EMI and RFI are potential problems in any industry, and there is a premium on protective products and services from it.
In order to prevent EMI or RFI, EMI/RFI Shielding agents may be used as protection. In most cases, EMI/RFI Shielding is in the form of a spray. The spray is often acrylic based, and is applied to plastic electronics housings. Highly pure metals such as nickel, silver, and copper in the spray help to reduce or completely eliminate EMI and RFI interference. EMI/RFI Shielding agents are also available as paints and brush on coatings.
EMI/RFI Shielding is important in many industries. For example, EMI/RFI Shielding is necessary in telecomm because radio transmissions can hamper the reception of a signal by a recipient if the signals are near the same frequency. EMI/RFI Shielding may prevent incorrect frequencies from interfering with a device. Medically, in another example, hospital equipment must meet standards set by the FDA to prevent the machinery from being affected by cell phones, PDA’s, or other electronic devices. EMI/RFI Shielding helps to make such protections possible.
EMI/RFI Shielding is important across many industries. Through spray on agents and other solutions, EMI/RFI Shielding is becoming more attainable. With such solutions, even in an increasingly electronic world, EMI and RFI may eventually become a non-factor in the industrial world.