Comparator with noise suppression

Details Comparator with noise suppression Comparator with noise suppression

1984-12-18

1987-03-24

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307354, 307261, 328 28, 328164, H03K 5153, H03K 508

Patent

active

046528334

ABSTRACT:
Apparatus for generating a single pulse the first time only that a noisy cyclic signal exceeds a reference level during a half-cycle. For the positive half of a cycle of the noisy cyclic signal, a comparator 12 and a multivibrator 14 produces a fixed voltage output when the noisy cyclic signal first exceeds the reference level. A multivibrator 23 stops the production of the fixed voltage output when the noisy cyclic signal next passes the zero voltage level in the negative direction. Consequently, a single pulse is generated indicating that the signal exceeded the reference level during that half-cycle. Comparator 16 and multivibrator 17 are for producing pulses whenever the noisy cyclic signal exceeds the reference level during the negative half-cycle.

REFERENCES:
patent: 3593162 (1971-07-01), Patmore
patent: 3612912 (1971-10-01), Schwartz
patent: 3737790 (1973-06-01), Brown
patent: 3842291 (1974-10-01), Maringer
patent: 3979683 (1976-09-01), Ikeda
patent: 4358738 (1982-11-01), Kahn
patent: 4480200 (1984-10-01), Tan et al.

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