Magnetic bubble memory detector-amplifier

Details Magnetic bubble memory detector-amplifier Magnetic bubble memory detector-amplifier

1978-11-01

1979-11-13

Moffitt, James W.

Static information storage and retrieval

Magnetic bubbles

Detectors

G11C 1908

Patent

active

041745396

ABSTRACT:
A magnetic bubble memory detector-amplifier for use with a bubble memory device having the dual output from an active and a dummy bubble detector in combination consists of a differential amplifier associated with constant current sources to drive the bubble detector elements, a notch filter coupled to the output of the differential amplifier to eliminate the rotating magnetic field frequency component, an amplifier coupled to the output of the filter which is controlled by a bias pulse at the fundamental frequency of operation to provide a reference for better discrimination between "ones" and "zeros," and, finally, a self-biasing detector coupled with a strobed output flip-flop.

REFERENCES:
patent: 3813660 (1974-05-01), Buhrer
patent: 3953840 (1976-04-01), Cutler et al.

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