Differential comparator powered from signal input terminals for

Details Differential comparator powered from signal input terminals for Differential comparator powered from signal input terminals for

1991-05-22

1993-02-16

Hudspeth, David R.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

3072961, 3072968, 307243, 307 85, H03K 522, H03K 301

Patent

active

051873966

ABSTRACT:
A differential comparator is provided for controlling two switches (40) and (42) to switch two supplies (10) and (12), respectively, to a common output node (22). The decision/control circuit (44) outputs two control signals (46) and (48), the logic state thereof being a function of whether supply (10) is higher than supply (12) or supply (12) is higher than supply (10). The operating power for the decision/control circuit (44) is derived from the supplies (10) and (12), and not from the common output node (22), such that when the switches (40) and (42) are closed and no power is being supplied by either of the supplies (10) and (12), the decision/control circuit (44) has sufficient power to make a decision.

REFERENCES:
patent: 4767942 (1988-08-01), Minami et al.
patent: 4801892 (1989-01-01), Yamakoshi et al.
patent: 4812672 (1989-03-01), Cowan et al.
patent: 4972098 (1990-11-01), Boudewijns
patent: 5027002 (1991-06-01), Thornton
patent: 5034625 (1991-07-01), Min et al.

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