CAJ | 학술논문

在惠斯登电桥实验中,可用数字电压表代替AC5/1型检流计.利用数字电压表内阻较大的特点,可以简化实验电路.通过选用不同精度的数字电压表做惠斯登电桥实验,并与AC5/1型检流计做同样实验,在实验结果、操作方法、对待测电阻的要求及仪器的耐用性等方面进行对比分析,结果表明,选用数字电压表能够简化实验电路,精简操作步骤,提高实验的测量精度.
재혜사등전교실험중,가용수자전압표대체AC5/1형검류계.이용수자전압표내조교대적특점,가이간화실험전로.통과선용불동정도적수자전압표주혜사등전교실험,병여AC5/1형검류계주동양실험,재실험결과、조작방법、대대측전조적요구급의기적내용성등방면진행대비분석,결과표명,선용수자전압표능구간화실험전로,정간조작보취,제고실험적측량정도.
In the Wheatstone bridge experiment,digital volt- meter can be used instead of the ACS/1 galvanometer. The experimental circuit can be simplified by the digital voltmeter, because its inner resistance is very large. Through comparing the Wbeatstone bridge experiments using the digital voltmeters of different precisions with the same experiments using the ACS/1 galvanometer on the experimental results, the operating methods, the requirements of measurement resistances and the service life of instruments, it has been shown that the digital voltmeter can simplify the experimental circuits, reduce the operation steps and increase experimental precisions.