Power source control circuit for controlling an electric potenti

Details Power source control circuit for controlling an electric potenti Power source control circuit for controlling an electric potenti

1996-04-15

1998-11-03

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of the amplifier

360 66, 360 46, 361212, G11B 502

Patent

active

058317830

ABSTRACT:
A power source control circuit prevents a generation of a spark between a magnetic head and a magnetic disk by accurately controlling an electric potential provided to the magnetic head. A signal processing circuit provides to the magnetic head an intermediate electric potential between a positive source voltage and a negative source voltage supplied by a power source unit. A first circuit provides the positive and negative source voltages to the signal processing circuit. A second circuit controls one of the positive and negative source voltages in response to a reference voltage fed back from the signal processing circuit. The reference voltage is provided from the signal processing circuit to the magnetic head for setting the head at the intermediate electric potential.

REFERENCES:
patent: 5367411 (1994-11-01), Nishiyama et al.

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