⚡ 有效值电压RMS Voltage

使用说明与常见问题How-to & FAQ

「有效值电压」是什么？What is the RMS Voltage tool?

正弦波 V_rms = V_peak / √2；也可由峰峰值。本地处理。可设置「已知」、「电压」。Sine V_rms = V_peak / √2; or from peak-to-peak. Processed locally. Settings: Given, Voltage.

如何使用「有效值电压」？How do I use the RMS Voltage tool?

在「已知」中选择你知道的是峰值还是峰峰值，填写电压，即可得到正弦波的有效值 V_rms（如 V_peak ÷ √2）。结果会随输入实时更新。Choose under Given whether you know the peak or peak-to-peak voltage, enter it, and get the RMS value of the sine wave (for example V_peak ÷ √2). The result updates as you type.

方波？Square?

方波 RMS=峰值；本页正弦。Square RMS = peak; this page is sine.

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

例如在「有效值电压」中填 已知 = 峰值，电压 = 10，结果区显示：峰值：10；有效值 RMS：7.071068；峰峰值：20For example, entering Voltage = 10 in the RMS Voltage gives: Peak: 10; RMS: 7.071068; Peak-to-peak: 20

哪些输入会被检查？Which inputs are validated?

「有效值电压」会检查这些输入——「电压」：必须填写，须大于 0；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 RMS Voltage checks its inputs — "Voltage": required, must be greater than 0; 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?

「有效值电压」的设置：「已知」可选 峰值、峰峰值（默认 峰值）；「电压」默认 10。每次生成结果都按当前设置处理。Settings in the RMS Voltage — "Given": 2 choices; "Voltage" default 10. 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?

「有效值电压」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 RMS Voltage 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.

「有效值电压」免费吗？需要注册吗？Is the RMS Voltage free? Do I need an account?

「有效值电压」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 RMS Voltage is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.