Measurement of Nonlinear Resistance by Unbalanced DC Bridge Using Constant Current
NI Zhong-wen,WANG Ye-hui,SHI Du-fang(Department of Information Science,Jiangsu Polytechnic University,Changzhou 213016,China)
On the basis of measurement of nonlinear resistance with an unbalanced DC bridge,the concept of unbalanced DC bridge with a constant current battery was proposed and the relevant formula of measuring nonlinear resistance was deduced.In comparison with the conventional unbalanced DC bridge,the method of measurement was quite simple by using the unbalanced DC bridge with a constant current battery.Furthermore linear processing could be made,and the precision of measurement could be increased.To measure resistance:(model 2.7kΩMF11).The nonlinear resistance was placed in an air-heating stove and in close contact with a copper bulk of larger heat capacity. The precision of temperature-controlling was 0.1℃,and the range of temperature controlling was from room temperature to 100℃.The measurement result was in accordance with the theory.
【CateGory Index】： O4-34