Bloch line pair driving device capable of quickly driving each B

Details Bloch line pair driving device capable of quickly driving each B Bloch line pair driving device capable of quickly driving each B

1984-05-07

1987-01-06

Moffitt, James W.

Static information storage and retrieval

Magnetic bubbles

Rotating field circuits

365171, G11C 1908

Patent

active

046352260

ABSTRACT:
In a Bloch line pair driving device comprising an inductor circuit which has first and second ends and which generates a magnetic field in a predetermined direction to drive each Bloch line pair transversely of the predetermined direction, a first switch is connected to the second end and is put in an on state to gradually increase an electric current flowing from a first voltage source through the inductor circuit in a preselected sense. Gradual growth of the magnetic field results from the gradual increase of the electric current and keeps each Bloch line pair stable at each position. A current path circuit is connected to the second end along with a second voltage source providing a second voltage different from the first voltage, and is put in an active state during an off state of the first switch. The active state of the current path circuit brings about a quick decrease of the magnetic field to propagate each Bloch line pair from each position. A second switch may be connected between the first end and the first voltage source to expedite the quick decrease of the magnetic field. An additional electric current may be caused to flow through the inductor circuit in a sense opposite to the preselected sense through third and fourth switches which are connected to the first and the second ends, respectively. An additional current path circuit is connected between the first end and the second voltage source to be put in an active state during an off state of each of the third and the fourth switches.

REFERENCES:
patent: 3890605 (1975-06-01), Sionezewski
patent: 4331887 (1982-05-01), Jadus et al.

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