Application of the thin film permalloy magnetoresistive sensors in electrical measurements

Thin film magnetoresistive magnetic field sensor may be used in the design of measurement converters. Two basic function modules - a multiplier and a direct current transformer - have been described. Using the modules following converters have been constructed and investigated: one- and threephase power converter, watt-hour meter, direct current transformer, adder and contactless current converter. Main advantages of these converters are: design simplicity, small geometric dimensions and relatively low errors - of the order of 0.5%.