A simple graphical procedure is introduced to optimise the design of a regenerative comparator (Schmitt trigger) capable of eliminating from a logic voltage waveform both positive-going ‘noise spikes’ contaminating the ‘0’ level (positive logic convention) and negative-going noise spikes contaminating the ‘1’ level.
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References
1.
SchmittO. H., ‘A thermionic trigger’, Journal of Scientific Instruments, 15, pp. 24–26 (1938).
2.
HartB. L. and BarkerR. W. J., ‘D.C. matching errors in the Wilson current source’, Electronics Letters, 15, pp. 389–390 (1976).
