差分阻抗定义
JustwhenyouthoughtyouhadmasteredZo,thecharacteristicimpedanceofaPCBtrace,alongcomesadatasheetthattellsyoutodesignforaspecificdifferentialimpedance.Andtomakethingstougher,itsaysthingslike:“…sincethecouplingoftwotracescanlowertheeffectiveimpedance,use50Ohmdesignrulestoachievea
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