Abstract
We present the linearity investigation of high precision bridge amplifiers as used in static force and torque measurements. The setup with cascaded inductive voltage dividers allows a much more detailed bridge amplifier linearity analysis than it is possible with the BN100 bridge standard or a recently proposed resistor-based strain gauge bridge transducer simulator. The bridge amplifier linearity deviation can be determined with an expanded (k=2) uncertainty of 2 nV/V and only with the presented setup it is possible to potentially reduce the relative uncertainty for nominal ratios below 1 mV/V.
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