计算通过电感器的电流上升到其最终值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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RL电流上升时间是当施加电压后，通过电感器的电流上升到其最终值特定百分比所需的时间。
$$ t = -\tau \ln(1 - \text{ratio}) $$其中 $\tau = \frac{L}{R}$ 是时间常数，ratio是目标电流作为最终电流的比例（例如0.90表示90%）。
