Miscellaneous active electrical nonlinear devices – circuits – and – Gating – Superconductive device
Patent
1997-07-14
1999-11-09
Wells, Kenneth B.
Miscellaneous active electrical nonlinear devices, circuits, and
Gating
Superconductive device
H03K 1792
Patent
active
059822198
ABSTRACT:
A circuit embodying the invention includes two toggle flip-flops formed using Josephson junctions sharing a common inductive element. One flip-flop is responsive to "zero" input signals (IN.phi.) and the other flip-flop is responsive to "one" input signals (IN1). Each flip-flop has two outputs. The two outputs of the flip-flop responsive to IN.phi. may be identified as A.phi. and B.phi. and the two outputs of the flip-flop responsive to IN1 may be identified as A1 and B1. The inductive element is settable to either one of two states by controlling the flow of a bias current therethrough. Depending on the state of current conduction through the inductive element, an IN.phi. input signal will produce an output at either A.phi. or B.phi. and an IN1 input signal will produce an output at either A1 or B1. If, and when, the inductive element is in a first state, an IN.phi. or IN1 input will cause a corresponding output at A.phi. or A1, respectively, and will concurrently set the inductive element to its second state. If, and when, the inductive element is in its second state, an IN.phi. or IN1 input signal will cause a corresponding output at B.phi. or B1, respectively, and will concurrently cause the inductive element to revert to its first state. Thus, each time an input signal is applied to the circuit, the inductive storage element is toggled from one state to its other state.
REFERENCES:
patent: 4136290 (1979-01-01), Davidson et al.
patent: 4501975 (1985-02-01), Josephs et al.
patent: 5191236 (1993-03-01), Ruby
patent: 5398030 (1995-03-01), Sandell
patent: 5598105 (1997-01-01), Kurosawa et al.
Hypres, Inc.
Schanzer Henry I.
Wells Kenneth B.
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