METHOD AND MEASUREMENT CIRCUIT FOR MEASURING AN UNKNOWN ELECTRICAL RESISTANCE IN THE PRESENCE OF AN UNKNOWN FIXED INTERFERENCE VOLTAGE OR A FIXED UNKNOWN INTERFERENCE CURRENT

摘要

The invention relates to a method for the measurement of an unknown electrical resistance in a current circuit, whereby an unknown fixed interference voltage is present in the current circuit. Two independent measurements of the total electrical resistance of the circuit are carried out sequentially with a different setting for a parameter relevant to the measurement and, by application of valid physical laws, the two measurements are analysed together such that on analysis the interfernce voltage is eliminated and the unknown electrical resistance for measurement can be determined. The invention further relates to a corresponding measuring circuit.