Pseudoactive bridge for separation of R and C in a practical capacitive/conductive transducer
K. A. Padmanabhan, G. Sundar Sarma · Electronics Letters · 1981
An effective and unique method of measuring independently the variations of resistive and capacitive constituents of a practical capacitive transducer using an improved pseudo-active bridge is described. The impedance change in some types of transducers may be due to changes in resistance and/or capacitance either way. Separation of changes in resistance and capacitance results in a better understanding of the transduced variable. The active bridge which separates the changes is suitable for online determination of the two changes.