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🌉 惠斯通电桥Wheatstone Bridge
平衡：R₁/R₂ = R₃/R₄；未知 Rₓ = R₂×R₃/R₁。本地处理。可设置「R₁」、「R₂」、「R₃」。Balance R₁/R₂ = R₃/R₄; unknown Rₓ = R₂×R₃/R₁. Processed locally. Settings: R₁, R₂, R₃.
使用说明与常见问题How-to & FAQ
「惠斯通电桥」是什么？What is the Wheatstone Bridge tool?
平衡：R₁/R₂ = R₃/R₄；未知 Rₓ = R₂×R₃/R₁。本地处理。可设置「R₁」、「R₂」、「R₃」。Balance R₁/R₂ = R₃/R₄; unknown Rₓ = R₂×R₃/R₁. Processed locally. Settings: R₁, R₂, R₃.
如何使用「惠斯通电桥」？How do I use the Wheatstone Bridge tool?
在「惠斯通电桥」中，填写「R₁」、「R₂」、「R₃」等参数，结果会随输入实时计算并显示在下方。In the Wheatstone Bridge: Fill in "R₁", "R₂", "R₃"; results are recalculated instantly as you type.
电桥不平衡时能算吗？Does it handle an unbalanced bridge?
不能，本页只用平衡条件 R₁/R₂ = R₃/R₄ 求未知电阻 Rₓ = R₂ × R₃ ÷ R₁，此时检流计电流为零。不平衡电桥的输出电压需要知道电源电压，用分压公式另行计算。No. It uses the balance condition R₁/R₂ = R₃/R₄ to find Rₓ = R₂ × R₃ ÷ R₁, where the galvanometer reads zero. An unbalanced bridge's output voltage needs the supply voltage and the divider formula.
能举个计算实例吗？Can you show a worked example?
例如在「惠斯通电桥」中填 R₁ = 1000，R₂ = 1000，R₃ = 1000，结果区显示：Rₓ（平衡）：1,000For example, entering R₁ = 1000, R₂ = 1000, R₃ = 1000 in the Wheatstone Bridge gives: Rₓ (balance): 1,000
哪些输入会被检查？Which inputs are validated?
「惠斯通电桥」会检查这些输入——「R₁」、「R₂」、「R₃」：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 Wheatstone Bridge checks its inputs — "R₁", "R₂", "R₃": 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?
「惠斯通电桥」的设置：「R₁」默认 1000；「R₂」默认 1000；「R₃」默认 1000。每次生成结果都按当前设置处理。Settings in the Wheatstone Bridge — "R₁" default 1000; "R₂" default 1000; "R₃" default 1000. 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?
「惠斯通电桥」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 Wheatstone Bridge 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.
「惠斯通电桥」免费吗？需要注册吗？Is the Wheatstone Bridge free? Do I need an account?
「惠斯通电桥」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 Wheatstone Bridge is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.