Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Demand – excess – maximum or minimum
Patent
1976-09-15
1978-01-17
Rolinec, Rudolph V.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Demand, excess, maximum or minimum
307351, G01R 1916, H03K 520
Patent
active
040694526
ABSTRACT:
Apparatus which automatically measures the range and the lower and upper peak values of an unknown signal which varies periodically as a function of time. More specifically, an unknown time varying input signal is applied through a programmable attenuator to one input of a comparator. A direct current voltage which changes in equal incremental steps between predetermined levels is applied to the other input of the comparator. When coincidence occurs an output signal is developed by the comparator responsive thereto. The output signal thus developed is utilized to maintain the attenuator at the range level to which it was set when the coincidence was detected and also causes the reference level applied to the comparator to sequentially change in such a manner as to ascertain the lower and upper peak values of the applied signal. The upper and lower peak values when determined are applied to a storage means and subsequently to an arithmetic computer means to ascertain predetermined values of the applied signal which values are then displayed in a display means.
REFERENCES:
patent: 3221253 (1965-11-01), Keyes
Conway Arch W.
Urdaneta Nelson
Dana Laboratories, Inc.
Karlsen Ernest F.
Rolinec Rudolph V.
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