Head driver

Details Head driver Head driver

1989-05-17

1991-11-19

Psitos, Aristotelis

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Head amplifier circuit

360 68, G11B 509, G11B 502

Patent

active

050670328

ABSTRACT:
A charging/discharging circuit charges a capacitor in response to a first level of a control signal, while discharging the capacitor in response to a second level. A voltage-current conversion circuit converts charging voltage of the capacitor into current which is responsive to the level of the charging voltage. A current supply circuit supplies output current from the voltage-current conversion circuit to a coil head. Thus, no abrupt change is caused in current flowing through the coil head in switching of the control signal.

REFERENCES:
patent: 4518925 (1985-05-01), Fukasawa
patent: 4639794 (1987-01-01), Ferrier
patent: 4647988 (1987-03-01), Takehara
patent: 4821127 (1989-04-01), Soga et al.

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