Biasing of magnetoresistive read head using gyrators

Details Biasing of magnetoresistive read head using gyrators Biasing of magnetoresistive read head using gyrators

1978-09-29

1980-03-04

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of biasing or erasing

360113, G11B 547, G11B 512

Patent

active

041919777

ABSTRACT:
An electromagnetic transducer particularly of the magneto-resistive (MR) type is biased by an inductive circuit means and operates within the linear portion of its characteristic curve. The inductive circuit means is interconnected to the output terminals of said transducer. An amplifier means is connected to the output terminals of the transducer and the inductive circuit means. The amplifier means is also biased by the inductive circuit means. The biasing scheme is enhanced when a gyrator is used as the inductive circuit means.

REFERENCES:
patent: 3969769 (1976-07-01), Gorter et al.
patent: 4050086 (1977-09-01), Harr
patent: 4075671 (1978-02-01), Cheatham et al.
patent: 4142218 (1979-02-01), Gorter
"Direct Coupled Magnetoresistive Head" by Cheatham, IBM T.D.B., vol. 18, No. 1, 6/75.

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