Universal microprocessor based electrical impedance meter

In this article theory of operation and design of a microprocessor electrical impedance measurement device is presented. It features broad input impedance range from 1 k Omega to 10 M Omega and relatively wide measurement bandwidth from 1 kHz to 100 kHz. Compact design, small dimensions and low price are its advantages and make an alternative choice to expensive commercial equipment. (Universal microprocessor based electrical impedance meter).