计算RC电路充电到其最终电压目标比例所需的时间。
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You can enter values with SI suffixes like 12.2m (equivalent to 0.012) or 14k (14000) or 32u (0.000032).
The results are calculated while you type and shown directly below the calculator, so there is no need to press return or click on a Calculate button.
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RC充电时间是电容器通过电阻充电到其最终电压特定百分比所需的时间。
$$ t = -\tau \ln(1 - \text{ratio}) $$其中 $\tau = RC$ 是时间常数，ratio是目标电压作为最终电压的比例（例如0.90表示90%）。