On the basis of analysis of noise, the noise caused by common impedance coupling and its harmfulness are introduced comprehensively. The suppression methods are discussed and analyzed.
在分析噪声的基础上，较全面地介绍了公共阻抗耦合的噪声及其危害，讨论分析了抑制该噪声的方法。
Most line drivers with low differential output impedance will also have inherently low common-mode output impedances, so the low impedance arms of the bridge are almost always at the driver.
有低的差动输出阻抗绝大多数的线路驱动器，同时也固有地有低的共模输出阻抗，这样，低阻抗桥臂几乎无一例外地位于驱动器一侧。
Because GUARD is driven from a low impedance source, the leakage from GUARD to system common is not a problem.
由于GUARD是受低阻源驱动的，所以从GUARD到系统共用点的漏泄不成问题。
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