| 摘要 |
<P>PROBLEM TO BE SOLVED: To control a motor, and prevent damage to other circuits due to damage occurred to motor control means for supplying a motor driving DC voltage to the motor. <P>SOLUTION: A DC motor control device 10 rectifies AC power from a power system 24 to DC power through a rectification circuit 26, and supplies a DC voltage output from the rectification circuit 26 to a DC motor 18 via a motor control board 14. The DC voltage output from the rectification circuit 26 is converted to a DC voltage of a predetermined magnitude through a switching power supply 38 and then subjected to variation suppression through a regulator IC 40 before being transmitted to the motor control board 14 as a voltage for a control circuit of the motor control board 14. A diode 66 is further disposed between the regulator IC 40 and the motor control board 14 to interrupt a flow of current from the motor control board 14 to the regulator IC 40. <P>COPYRIGHT: (C)2013,JPO&INPIT |
