Polar - coordinates impedance meter with simulated resonance

Abstract

The paper presents an impedance meter based on the effect of simulated resonance. The series resonance circuit supplied with an polar-coordinates impedance simulator, an current signal generator and an phase-sensitive indicator are used in measuring circuit. The measuring algorithm is very simple and consists on three operations: creating of reference impedance arbitrary vector, phase regulation and modulus regulation of reference impedance. The error of meter is very small value, characteristic for null methods of measurements.