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HIGH SCHOOL

Engineering

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Electrical Engineering

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First and Second-Order Circuits

RL Circuit and Frog Leg Current Response

Description

An RL circuit is used to model the frog leg’s response to electrical stimulation. In this setup, the student studies how current changes in a resistor-inductor circuit can trigger muscle contraction. The circuit provides a way to control and measure the electrical impulses involved in the experiment.

Transcript

一名学生使用RL电路研究青蛙腿部肌肉对电刺激的反应。

闭合开关会引起短暂的肌肉收缩,而打开开关则会触发持续 0.01 秒的肌肉活动。

学生将青蛙的腿建模为一个电阻器,以确定其电阻,假设20毫安的电流可引发持续的肌肉反应。

当开关闭合时,电感器在稳态下相当于短路,使电流绕过电阻,从而引起轻微的肌肉收缩。

将欧姆定律应用于60欧姆的电阻可得到初始电流。

当开关断开时,电路变为无源的RL电路。此时电流流经电阻,引起肌肉持续活动。

时间常数等于电感与电阻的比值,通过电感的电流可利用计算得到的初始电流和时间常数来表示。

将对应于持续肌肉活动的电流和时间值代入电流方...

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