The result shows that the longer is the time of constant potential, the bigger is the discharge capacitance and the lower is the self-discharge rate.
结果表明，恒压时间越长，超级电容器的放电电容越大，自放电速率越低。
Coupling capacitance between the heatsink and the devices produces common mode emission, which is considered as a constant calculated by a equation resulting from the static field for a long time.
散热片与器件间的电容耦合是电路产生共模辐射的主要原因之一，其对研究电路的辐射发射特别重要。然而长期以来人们将该电容简化为平板电容，采用静电场推导的电容公式计算。
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