🌀 感抗 XL = 2πfLInductive Reactance Calculator

使用说明与常见问题How-to & FAQ

「感抗 XL = 2πfL」是什么？What is the Inductive Reactance Calculator tool?

交流电路中电感的感抗 XL = 2πfL（欧姆），同时给出电流（若填电压）。本地处理。可设置「频率 Hz」、「电感 H」、「电压 V（可选）」。Inductive reactance in an AC circuit, XL = 2πfL (ohms), plus current if a voltage is given. Processed locally. Settings: Frequency Hz, Inductance H, Voltage V (optional).

如何使用「感抗 XL = 2πfL」？How do I use the Inductive Reactance Calculator tool?

填写交流电的频率和电感，即可得到感抗 XL = 2πfL（欧姆）；填写电压时还会给出电流。结果会随输入实时更新。Enter the AC frequency and the inductance to get the inductive reactance XL = 2πfL in ohms; add a voltage to get the current as well. The result updates as you type.

容抗？Capacitive?

电容的容抗 XC = 1/(2πfC)，频率越高越小。Capacitive reactance is XC = 1/(2πfC) and falls with frequency.

能举个计算实例吗？Can you show a worked example?

例如在「感抗 XL = 2πfL」中填 频率 Hz = 60，电感 H = 0.1，结果区显示：感抗 XL：37.6991 ΩFor example, entering Frequency Hz = 60, Inductance H = 0.1 in the Inductive Reactance Calculator gives: Reactance XL: 37.6991 Ω

哪些输入会被检查？Which inputs are validated?

「感抗 XL = 2πfL」会检查这些输入——「频率 Hz」、「电感 H」：必须填写，须大于 0；「电压 V（可选）」：不能为负数；绝对值超过 10¹⁵ 的数也会被拒绝。不符合时结果区显示具体提示，不会给出数字。The Inductive Reactance Calculator checks its inputs — "Frequency Hz", "Inductance H": required, must be greater than 0; "Voltage V (optional)": cannot be negative; numbers above 10¹⁵ in absolute value are rejected too. When a value fails, the result area names the problem instead of showing a number.

有哪些选项可以调整？What options can I adjust?

「感抗 XL = 2πfL」的设置：「频率 Hz」默认 60；「电感 H」默认 0.1；「电压 V（可选）」可留空。每次生成结果都按当前设置处理。Settings in the Inductive Reactance Calculator — "Frequency Hz" default 60; "Inductance H" default 0.1; "Voltage V (optional)" optional. The result always uses the current settings.

计算结果可以用于作业或工程吗？Can I use the results for homework or engineering?

「感抗 XL = 2πfL」使用教科书标准公式（公式写在说明和常见问题中），适合学习和估算核对；涉及安全的工程设计请以规范和实测为准。The Inductive Reactance Calculator uses standard textbook formulas (given in the description and FAQ), which is good for learning and checking estimates; for safety-critical engineering follow codes and measured values.

「感抗 XL = 2πfL」免费吗？需要注册吗？Is the Inductive Reactance Calculator free? Do I need an account?

「感抗 XL = 2πfL」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Inductive Reactance Calculator is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.