Position sensor

Details Position sensor Position sensor

1984-06-28

1986-05-13

Stellar, George G.

Dynamic magnetic information storage or retrieval

Recorder control of an external device

318653, 324206, 360 722, 360113, G01B 702

Patent

active

045890382

ABSTRACT:
A position sensor comprises n tracks (Sp.sub.1, Sp.sub.2, Sp.sub.3) on a carrier (T) which are provided with magnetizations of a length L and of alternate polarity. The tracks are phase-shifted with respect to each other by .DELTA.L=L.sub.
. A sensor head (S) comprises Permalloy-resistors (R.sub.1, R.sub.2, R.sub.3) above each track (Sp.sub.1, Sp.sub.2, Sp.sub.3) whereat the maximum distance d of the Permalloy-resistors (R.sub.1, R.sub.2, R.sub.3) from the tracks does not exceed essentially the length L (FIG. 1).

REFERENCES:
patent: 3493694 (1970-02-01), Hunt
patent: 4001890 (1977-01-01), Kayser
patent: 4044392 (1977-08-01), Brock et al.
patent: 4152736 (1979-05-01), Jansen et al.
patent: 4424541 (1984-01-01), Koinuma et al.
patent: 4485414 (1984-11-01), Baker
IBM Technical Disclosure Bulletin, vol. 15, No. 4, Sep. 1972, pp. 1320-1321, Servo Control of Multielement Magnetic Heads, Zimmermann et al.

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