| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to control an overshoot amount to a desired value. SOLUTION: A recording head driving circuit 16 drives a recording head 12 for recording information on a magnetic recording medium. A switching circuit 20 is an H bridge circuit including a plurality of transistors, and the switching circuit 20 switches the direction of a write current Iw flowing to the recording head 12 corresponding to the conducting state of each transistor. A write current control part 40 controls the write current Iw flowing to the recording head 12. An overshoot control circuit 30 adds an overshoot current Ios proportional to the write current Iw to the write current Iw flowing to the recording head 12 in a prescribed overshoot period. COPYRIGHT: (C)2007,JPO&INPIT
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