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A solution to the problem of measuring a standard inductor in terms of the unit of capacitance using a stable ac two-phase generator is presented. Accurate separation of inductive and conductive components is obtained by means of a self-adjustment feature of the system, whose quadrature phase, in principle not essential for LC comparison, allows exclusion of any reference resistor. Standard deviations s < 1 Ã 10-6 and overall uncertainties near to 1 Ã 10-6 (1Â¿) are obtained with a test implementation of the system.
Instrumentation and Measurement, IEEE Transactions on (Volume:34 , Issue: 2 )
Date of Publication: June 1985