Schmitt trigger circuit with selection circuit

Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons

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307242, 307279, 307360, 307451, 307579, H03K 3295

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active

045715041

ABSTRACT:
In the Schmitt trigger circuit, a common input signal is supplied to first and second wave-shaping circuits, which have different threshold voltages and which provide different output wave-shaped signals. These wave-shaped signals are alternately selected by a selection circuit to provide the composite Schmitt trigger output signal. When the logic level of the output signal of the selected wave-shaping circuit is inverted due to a change in the input signal to that selected wave-shaping circuit, the output of the other wave-shaping circuit is selected by the selection circuit to provide the Schmitt trigger output signal.

REFERENCES:
patent: 3851189 (1974-11-01), Moyer
patent: 3904888 (1975-09-01), Griffin et al.
patent: 3952213 (1976-04-01), Fukaya
Patent Abstracts of Japan, vol. 6, No. 176, 9/10/82 and JP-A-57-93721.
Patent Abstracts of Japan, vol. 4, No. 137, 9/25/80, p. 95 E 27 and JP-A-55-90130.
Patent Abstracts of Japan, vol. 1, No. 114, 9/30/77, p. 4317 E 77 and JP-A-52-46748.
Patent Abstracts of Japan, vol. 3, No. 96, 8/15/79, p. 74 E 130 and JP-A-54-74358.

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