文件名称:Wheatstone-Bridge
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惠斯通电桥(又称单臂电桥)是一种可以精确测量电阻的仪器。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。-Wheatstone bridge (also known as Wheatstone bridge) is an instrument that can accurately measure resistance. Figure 3-13 is a common Wheatstone bridge. Resistors R1, R2, R3, R4 called the four-arm bridge, G for the galvanometer, to check whether it is in the branch current. When no current passes through G, the said bridge balance. Balance, the four arm resistance to a simple relationship between the resistance can be measured by this relationship.
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Wheatstone Bridge.ppt
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