A peak AC-DC voltage comparator for use in a standards laboratory.
Louis A. Marzetta · 1966
An increased availability of high-precision a-c and d-c power sources has allowed routine electrical measurements to be made in the field with a precision previously possible only in the standards laboratory.Ac-dc comparisons are being made on the basis of the peak, rms, and average value of the sine wave source.The peak ac-dc voltage comparator described in this report was developed for use in the standards labora- tory to help meet the increasing demand for the certi- fication of new field instruments.The described instrument is capable of establishing the ac-dc error of other peak comparators at frequencies from 50 to 2^00 Hz with an imprecision of less than 15 ppm.