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Title: Recent Advances In Precision Ac Measurements
Author: Ramesh Goya
Source: 1984 Measurement Science Conference
Year Published: 1984
Abstract: Development of a new monolithic thermal sensor, a unique high impedance attenuator, a precision sample and hold circuit, and novel AC error correction technique have brought significant improvements in accuracy of AC measurements. A precision thermal true RMS measurement system is described that offers a transfer stability of 25ppm in the frequency band of 40Hz to 20kHz. A microprocessor-based system uses a non-volatile memory for software calibration, and brings record DC, AC, and Res i stance measurement accuracy even to production and repair.