Bubble memory coil drive circuit

Static information storage and retrieval – Magnetic bubbles – Rotating field circuits

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

G11C 1908

Patent

active

041808649

ABSTRACT:
Circuitry for use in bubble memory propagation wherein field drive coils receive energy from an energy storage device (capacitor) through a plurality of selectively located and timed switches. A basic digitally controlled switching arrangement is illustrated in matrix form and, in one embodiment, one capacitor with two voltage sources and, in another embodiment, two capacitors and a single voltage source are utilized. Selective timing of the opening and closing of the switches provides a digitally controlled series of 1/2 sine wave current pulses to meet operating requirements for bubble propagation. Additional variations of the selective timing of switch opening and closings are used to elongate the start and stop pulses to provide better operating margins for these events. Field rotation in either clockwise, or counter-clockwise, or a mix of rotational senses is readily achieved under digital control.

REFERENCES:
patent: 3763478 (1973-10-01), Yoshizawa et al.
patent: 3958160 (1976-05-01), De Niet et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Bubble memory coil drive circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bubble memory coil drive circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bubble memory coil drive circuit will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2073388

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.