Abstract It was constructed the experiment circuit formed by symmetric square wave voltage source, DC current source, oscilloscope and peak difference demodulation circuit, and it was also provided specific parameters of cores and winding requirement. Pairs of ten winded cores were tested sensitivity and drift value in 10 minutes. The result shows that the pair of cores characterized by the similar physical parameters and same manufacturing processes still has obvious magnetic performance dispersion. The top sensitivity is 7 mV/(μA·T) and the minimum drift value in 10 minutes is 3 μA·T.
ZHOU Li-ren,PAN Yang,ZHU Li, et al. Research on Magnetic Performance Consistency of Two Cores of DC Current Comparator[J]. Acta Metrologica Sinica, 2017, 38(3): 336-339.
2017, Vol. 38 
