Capacitor multiplexing for magnetoresistive heads

Details Capacitor multiplexing for magnetoresistive heads Capacitor multiplexing for magnetoresistive heads

1987-09-02

1989-05-23

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

Head

Hall effect

360 61, G11B 500, G11B 1504

Patent

active

048335592

ABSTRACT:
This patent teaches multiplexing MR head circuits to an off-chip capacitor in novel ways to eliminate excessive numbers of off-chip components. The bias current is switched off for each MR head when it is not in use and the bias current is supplied only to the MR head being employed at a given time. On the sensing side, the invention teaches connecting a single capacitor across a plurality of pairs of transistor emitters, each pair of transistors having their collectors (assuming NPN) connected to the sense lines of one of the MR heads. A number of example circuits are illustrated and described, including one employing PNP transistors.

REFERENCES:
patent: 3409884 (1968-11-01), Guerth
patent: 3541355 (1970-11-01), Kaw
patent: 4492997 (1985-01-01), Arai et al.

Affiliated with

Also associated with

Rating

Capacitor multiplexing for magnetoresistive heads does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Capacitor multiplexing for magnetoresistive heads, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Capacitor multiplexing for magnetoresistive heads will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1734446