Superconductive latch circuit

Details Superconductive latch circuit Superconductive latch circuit

G - Physics

11

C

352/41, 352/49

G11C 11/44 (2006.01) H03K 3/38 (2006.01)

Patent

CA 1157151

SUPERCONDUCTIVE LATCH CIRCUIT ABSTRACT This superconductive latch circuit uses superconductive switching devices and can be powered by the same phase of AC power used to power other circuits with which the latch is used. The latch is comprised of a storage loop including a superconductive switch and an inductor. It is also comprised of another super- conductive switch through which an AC gate current can flow and whose state determines whether or not the AC current is delivered to the superconductive storage loop. Information is stored in the loop as the presence and absence of a circulating current of either polarity. In a variation of this latch, an output of the sense circuit which detects the state of the storage loop if fed back as a control signal to the superconductive switch in the storage loop and also as one input to an AND gate to which a SET signal is also applied. AC power is switched to the storage loop when both inputs to the AND circuit are simul- taneously present. In another variation, the signal which is fed back from the sense circuit is an input to an OR gate, whose output is the control signal to the switch in the storage loop. This latch reliably holds data when the AC power diminishes to zero, and also when the AC power changes polarity. Y0980042

373894

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