在电容电桥中你是如何调节平衡的 怎样减小分布电容对交流电桥平衡的干扰
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图3——13所示是一个通用的惠斯通电桥。
电阻R1，R2，R3，R4叫做电桥的四个臂，G为检流计，用以检查它所在的支路有无电流。
当G无电流通过时，称电桥达到平衡。
平衡时，四个臂的阻值满足一个简单的关系，利用这一关系就可测量电阻。
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