Preamp using pulsed write currents
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United States of America Patent
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-
Mar 23, 2004
Grant Date -
N/A
app pub date -
Mar 23, 2000
filing date -
Jun 30, 1999
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A disc drive includes a base and a disc rotatably attached to the base. The disc drive also includes an actuator assembly rotatably attached to the base and a device for moving the actuator assembly. The actuator assembly includes an arm carrying a write head in a transducing relationship with respect to the disc. The write head further includes a preamp current driver circuit. A data pulse circuit is operatively coupled to the preamp current driver circuit to provide a write current impulse based on an input data pattern. The preamp current driver circuit further includes a plurality transistors to receive the write current impulse and provide a sequence of write current impulses of opposite polarity to the write head for effecting magnetic recording on the disc of the disc drive based on the input data pattern.
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