DATE_DETECTOR

Published:2009/7/1 4:08:00 Author:May | From:SeekIC

Only three ICs are used to sense pulse rate of input signal with high accuracy,For monitoring frequency, two such circuits can be used, with one set to upper frequency limit and other to lower limit. Output is high when input pulse rate is above set point and low for frequencies below set point. Frequency of set point is reciprocal qf monostable delay time (f0 = 1/0.32R2 C2).-J. W. Poore,Three IC′s Accurately Sense Pulse Rate,EDN Magazine, Aug. 15, 1972, p 53.



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