Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Demand – excess – maximum or minimum
Patent
1985-08-30
1987-03-31
Karlsen, Ernest F.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Demand, excess, maximum or minimum
307351, G01R 1916, H03K 5153
Patent
active
046545875
ABSTRACT:
A high-speed digital peak detector for determining the peak voltage of an input analog signal and for providing a one of N unary digital output corresponding to the peak voltage, where N is a positive integer, comprising a plurality of N self-latching voltage detectors in a flash-encoding or parallel encoding arrangement, each detector comprising a latchable differential voltage comparator and an Exclusive/Or gate, each of the comparators and gates having first and second input terminals and first and second output terminals and each of the comparators further having first and second latch function input terminals. The second output terminal of each of the comparators is connected to the first input terminal of a corresponding one of the gates, and the first and second output terminals of the corresponding one of the gates is connected, respectively, to the first and second latch function input terminals of the corresponding one of the comparators. A reset signal is coupled to the second input terminal of each of the gates and a standard voltage is coupled to the second input terminal of each of the comparators. A step difference from one standard voltage to the next is maintained which is substantially equal to a one/(N+1) part of the entire expected range of the input analog signal, the analog input signal being applied in parallel to the first input terminal of each of the comparators, and a one of N unary digital output being provided collectively at the N first output terminals of each of the N comparators corresponding to the peak voltage of the input analog signal.
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Collins et al; "High Speed Sampling Voltmeter"; vol. 9, No. 12; May 1967; pp. 1814-1815.
Hamann H. Fredrick
Karlsen Ernest F.
Montanye George A.
Nguyen Vinh P.
Orlick Jonathan B.
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