| 摘要 |
PURPOSE:To reduce a passing current by selectively turning ON an MOS transistor for forming a drive circuit at a timing necessary for driving a motor. CONSTITUTION:When signals A, B are low levels, MOS transistor P1, P2, N1, N2 are in OFF state. When the signal A or B is set to a high level in this state, the MOS transistor N1, P2 or N2, P1 are turned ON, and the motor 1 is normally or reversely rotated. The output pulses of the signals A, B are generated during a timing PW0 necessary to drive the motor 1. An output pulse C is applied at the timing displaced by PW1, PW2 from the output pulses of the signals A, B to the MOS transistor Mc, thereby preventing the unnecessary vibration of the motor 1. |
