Abstract
SUMMARYThe improved current‐bridge method and its mathematical mode are proposed for accurate low‐impedance measurement. To realize the accurate measurements of shunt resistors smaller than 1 mΩ, the expansion of current ratio of a current transformer and a current comparator, the use of low‐value resistance for reference impedance, and the development of a buffer amplifier which have flat load characteristics are required. The improved current bridge‐method has the possibility for accurate measurement of shunt resistors up to 10 μΩ.
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