Abstract
A prototype wide-range four-terminal-pair universal impedance bridge has been constructed in order to test ideas for balancing procedures and noise performance. The relative standard uncertainty (1/spl sigma/) contributed by noise and short-term drift to the measurement of resistance, capacitance, and inductance is less than 10/spl times/10/sup -6/ from 1 to 30 kHz, and less than 35/spl times/10/sup -6/ at 100 kHz. A two-phase digital voltage generator provides the two voltages required to bring the bridge to near, but not exact, balance. The detector offset voltages are measured with a vector voltmeter and used to correct for the inexact balance.
Published Version
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