| 摘要 |
A circuit is for improving the access time by means of directly providing the power supply to a spindle motor at initial driving. At initial driving state, the power supply (18) is directly provided to the spindle motor by connecting a switch (17) controlled by a microprocessor (2) to the contact a. At stable state, the switch is connected with the contact b, and the circuit performs the PWM (pulse width modulation) driving mode.
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