Noise immune NTL logic network

Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons

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307454, H03K 19013

Patent

active

053008278

ABSTRACT:
An NTL (Non-Threshold Logic) NOR logic circuit exhibits a small signal swing, effected by establishing a pseudo threshold level by utilizing a low voltage power supply and a combination of NPN bipolar devices arranged to provide an essentially noise immune circuit having high DC gain and high AC noise tolerance.

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patent: 4694198 (1987-09-01), Umeki
patent: 4710793 (1987-12-01), Gray
patent: 4719367 (1988-12-01), Denda
patent: 4806785 (1989-02-01), Michail et al.
patent: 4806791 (1989-02-01), Mizuide
patent: 4871977 (1989-10-01), Schilling et al.
E. L. Carter et al., Dual Phase Hysteresis Logic Circuit, IBM Technical Disclosure Bulletin, vol. 31, No. 4, Sep. 1988.
P. R. Epley et al., Schmitt Trigger Circuit IBM Technical Disclosure Bulletin, vol. 16, No. 5, Oct. 1973.

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