Magnetic head drive circuit

Details Magnetic head drive circuit Magnetic head drive circuit

1988-08-19

1990-06-26

Stephan, Steven L.

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

360114, 363 98, G11B 1112, G11B 1304

Patent

active

049378023

ABSTRACT:
A magnetic head drive circuit for driving a coil of the magnetic head performing opto-magnetic recording, is disclosed. According to the present invention, the switching elements are actuated on the basis of driving signals for commutatingly connecting three power sources presenting three different potentials to both ends of a coil of the magnetic head such that the potential difference across both ends of the coil at the time of magnetic field inversion is larger than that at the time of generation of the stationary magnetic field to render the rise time of the current flowing in the coil sufficiently short.

REFERENCES:
patent: 4467407 (1984-08-01), Asano
patent: 4651269 (1987-03-01), Matsumura
patent: 4748605 (1988-05-01), Sakai et al.
patent: 4750159 (1988-06-01), Yoda
Japanese Abstract, vol. 12, No. 331, Sep. 7, 1988, "Magnetic Head Driving Circuit 63-94406 (A) by Sony Corporation".
Japanese Abstract vol. 12, No. 295, Aug. 11, 1988, "Magnetic Recording Circuit 63-69005".

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