Peak detection circuit

Details Peak detection circuit Peak detection circuit

1992-05-13

1994-08-02

Nguyen, Vinh

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Demand, excess, maximum or minimum

307351, 328151, G01R 1904, H03K 519

Patent

active

053349300

ABSTRACT:
A peak detection circuit accurately detects peaks even if a noise component is included in the input signal. The peak detection circuit includes: a differentiating circuit which produces a differentiated signal of an input signal, a peak hold circuit which produces a peak value envelope of an output of said differentiating circuit, and a first comparator which compares an output of said differentiating circuit and a reference signal formed on the basis of an output of said peak hold circuit, and which detects when said input signal falls below said reference signal A second comparator detects a portion which exceeds an output of said differentiating circuit A flip-flop produces a signal which rises in accordance with an output of said second comparator and falls in accordance with an output of said first comparator, thereby to form a signal representing a peak by the rise of an output of said flip-flop.

REFERENCES:
patent: 3668532 (1972-06-01), Potush
patent: 3767938 (1973-10-01), Kueper
patent: 3973197 (1976-08-01), Meyer
patent: 4024459 (1977-05-01), Mears
patent: 4045743 (1977-08-01), Walker
patent: 4166245 (1979-08-01), Roberts
patent: 4399414 (1983-08-01), Bird
patent: 4495529 (1985-01-01), Gustafson
patent: 4639618 (1987-01-01), Olesen

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