| 基于双臂电桥的组合式测微方法 |
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| 引用本文： | 马成.基于双臂电桥的组合式测微方法[J].物理与工程,2011,21(6):29-31. |
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| 作者姓名： | 马成 |
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| 作者单位： | 湖北大学物理学与电子技术学院,湖北武汉,430062 |
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| 摘 要： | 利用普通物理实验室的常见器材,如千分尺、变阻箱、检流计、电阻丝、导线等,根据螺旋放大、电桥平衡原理设计了螺旋电桥式测微仪.介绍了该装置的原理、使用方法和测量效果.
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| 关 键 词： | 机械放大 电桥 双臂电桥 测量 |
A COMBINED MICROMEASURING METHOD BASED ON DOUBLE BRIDGE |
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| Ma Cheng.A COMBINED MICROMEASURING METHOD BASED ON DOUBLE BRIDGE[J].Physics and Engineering,2011,21(6):29-31. |
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| Authors: | Ma Cheng |
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| Institution: | Ma Cheng(School of Physics and Electronic Engineering,Hubei University,Wuhan,Hubei 430062) |
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| Abstract: | This paper detailed the principle,operating instruction and measurement effect of a screw bridge micrometer,according to screw amplification and electric bridge amplification principles,assembled by ordinary parts in a college physics lab,such as micrometer,rheostat,galvanometer,resistance wire,conductors,and etc.The combined use of screw amplification and bridge amplification greatly increased the enlargement factor and improved the accuracy of measurement. |
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| Keywords: | mechan-amplifier electric bridge amplification double bridge measurement |
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