| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power converter capable of suppressing the output fluctuation in a current detection means caused by noise, without response delay. <P>SOLUTION: A motor controller includes current sensors 13, 14, a +5V power supply circuit 150, a 15V power supply circuit 151, a -5V power supply circuit 152 and a coil 153. The current sensors 13, 14 have reference power supply input terminals each connected to the power supply output terminal of the +5V power supply circuit 150, plus power supply input terminals each connected to the power supply output terminal of the 15V power supply circuit 151, and minus power supply input terminals each connected to the power supply output terminal of the -5V power supply circuit 152, each through the coil 153. Even if the output voltage in the power supply circuit fluctuates due to noises, an inductance of coil 153 enables the fluctuation in the reference voltage of the current sensors 13, 14 to be attenuated. Thereby, the reference voltage of the current sensors 13, 14 can be stabilized to suppress the output fluctuation in the current sensors 13, 14 occurred along with noise, without response delay. <P>COPYRIGHT: (C)2010,JPO&INPIT |
