Holland Shielding Systems BV

Worldwide leading manufacturer of EMC (electromagnetic compatibility), EMI (electromagnetic interference), RFI (radio frequency interference), & EMP (electromagnetic pulse) shielding solutions. Our EMC experts will work ...

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101 EMI Shielding Tips and Tricks

Jul 02, 2020 | Holland Shielding Systems BV

Principle of shielding 1 The principle of shielding is creating a conductive layer completely surrounding the object you want to shield. This was invented by Michael Faraday and this system is known as a Faraday Cage. 2 Ideally, the shielding layer will be made up of conductive sheets or layers of metal that are connected by means of welding or soldering, without any interruptions. The shielding is perfect when there is no difference in conductivity between the used materials. When dealing with frequencies below 30 MHz, the metal thickness affects shielding effectiveness. We also offer a range of shielding methods for plastic enclosures. A complete absence of interruptions is not a realistic goal since the Faraday cage will have to be opened from time to time so electronics, equipment or people can be moved in or out. Openings are also needed for displays, ventilation, cooling, power supply, signals etc. 3 Shielding works in both directions, items inside the shielded room are shielded from outside influences. (Fig. 3.1)...

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