The effect of interfering flux on direct current comparator

In order to minimize the uncertainty of direct current comparator (DCC), the effect of interfering flux on DCCs is investigated here. Some important concerns are studied, such as the number of bus-bars, the window shape of bus-bars, the distance between the bus-bars and core, etc. The investigations are performed by finite element method (FEM). The results show that the bus-bars should be configured as symmetrical, with more than five pairs as well as elliptical shape window.