大学物理 ›› 2006, Vol. 25 ›› Issue (12): 42-42.
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林丽娟[1] 黄湘友[2]
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摘要： 交流电桥广泛应用于电子工业、电气工程及非电量的电学测量中，但交流电桥应用时平衡指零仪与交流电桥的电源都要求接地,它们都各具地线而不能直接连通．利用光电池和发光二极管可以有效地解决交流电桥应用过程中的接地问题．本文给出了一种利用光电池解决交流电桥接地问题的设计方案．
关键词: 交流电桥, 接地问题, 光电池, 光隔离放大
Abstract: The alternating bridge has got extensive applications in electronic industry, electric measurements of many non-electric quantities. However, the problem is that, in the application of the bridge, the electric power of the balance null indicator and that of the bridge must be connected to the ground at the same time, They each have earths and cannot be connected together. The problem can be effectively solved by using photocell and LED. A method which is used to solve the problem is reported.
Key words: alternating bridge, connecting problem, photocell, light insulates enlarging
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林丽娟[] 黄湘友[]. 交流电桥采用光隔离放大信号源的设计[J]. 大学物理, 2006, 25(12): 42-42.
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https://dxwl.bnu.edu.cn/CN/Y2006/V25/I12/42
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