精确计算电路时间常数与衰减系数
$\displaystyle V(t) = V(0) \exp(-\alpha t)$
$\displaystyle \alpha = \frac{1}{\tau} = \frac{1}{\Delta t} \ln \frac{V_1}{V_2}$
衰减系数 $\displaystyle \alpha =$
___________
$\ \text{Ms}^{-1}$
时间常数 $\displaystyle \tau =$
___________
$\ \text{ns}$