A large majority of EMI problems, including both emissions and immunity, involve interference currents conducted into and out of the box via a power or data cable. These currents can be controlled by ...
Electromagnetic far field impedance is about 377Ω = 120Ï€ or 29,9792458 × 4 × Ï€Î© for the vacuum velocity of light. Any electromagnetic wave far enough from its source (rule of thumb >wavelength/2 × Ï€) ...
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