pcbdesignforrealworldemicontrol2(編輯修改稿)
2025-01-15 19:53 本頁(yè)面
【文章內(nèi)容簡(jiǎn)介】 ling Mechanisms Introduce the Signal Spectra Introduce the Resonance Effect Potential Interference Source2023/3/1 星期一星期一 12 The Importance of EMC design1. EMC Design is important for costdown.2. Need certificates to enter into different countries and regions, mon marks:CCC ChinaCE European UnionVCCI JapanBSMITaiwanFCC United States2023/3/1 星期一星期一 13 Coupling MechanismsElectrical Field Coupling2023/3/1 星期一星期一 14Magic Field Coupling Coupling Mechanisms (Continue)2023/3/1 星期一星期一 15 Signal Spectra2023/3/1 星期一星期一 16 Resonance EffectsMost EMI is narrow band, not broad band.The resonance frequency in cavity is:The a, b and c is the dimension of the cavity.The m, n and p is integer, and be both or all zero.2023/3/1 星期一星期一 17 Potential Interference SourceShielded products: Vias and holes, connectors, I/O cables…Unshielded products PC board, radiators, external cables, wireless antennas…2023/3/1 星期一星期一 183. The Inductance Introduce the Inductance Electromagic Induction Introduce the Mutual inductance Introduce the SelfInduction Introduce the Partial Induction2023/3/1 星期一星期一 19 Introduce the InductanceThe influence of inductance is extremely important in high frequency spectra.The inductance can be anywhere in all ponents such as capacitors resistors, lines, and planes. 2023/3/1 星期一星期一 20 Electromagic InductionThe electromagic inductance formula in Faraday’s law:In a small area A, the :2023/3/1 星期一星期一 21Effect of Powe
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