EMC / EMI Formulas
EMC and EMI formulas quantify shielding, coupling, and the emissions that determine regulatory compliance. These calculators help you predict interference and design effective mitigation. They are key to passing certification on the first attempt.
EMC / EMI Formula Calculators
- Harmonic Frequency f_n = n × f_sw
- Differential Mode Filter Inductance L = Z / (2πf)
- Common Mode Choke Impedance Z = V_noise / I_limit
- Shielding Effectiveness SE = 20 × log₁₀(E_inc / E_trans)
- Aperture Leakage Cutoff f_c = c / (2 × slot_length)
- EMI Filter Insertion Loss Required IL = V_measured − V_limit
- ESD Clamping Voltage V_clamp = V_br + I_esd × R_dyn
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