Twin-Fed Multiplexed Detector for Ion-Implanted, Contiguous-Disk Bubble Devices
Original Publication Date: 1983-Dec-01
Included in the Prior Art Database: 2005-Feb-08
A multiplexing detector scheme using a single, twin-fed detector is shown in Fig. 1 and the circuit configuration is shown schematically in Fig. 2. The detector 1 has an expander conductor 2 and a magnetoresistive sensor 3 positioned over a nonimplanted pattern that forms major loop 4 and major loop 5. Bubbles are expanded bidirectionally along nonimplanted edges 6 and 7 by current pulses in the overlay conductor 2. Bubbles are detected by the magnetoresistive sensor element 3 in the usual manner and collapsed after detection by reversing the polarity of the current pulse in the conductor.