| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a DC motor apparatus which can inexpensively control rotation of a DC motor with a simple structure and to provide a window switching device equipped with the DC motor apparatus. <P>SOLUTION: The DC motor apparatus includes the DC motor 1, an H bridge circuit 2 for switching a direction of rotation of the DC motor 1, a power supply part 3 for supplying current to the DC motor 1 through the H bridge circuit 2, and a control part (microprocessor 4) controlling the H bridge circuit 2. The control part detects a potential difference which periodically fluctuates between electrode terminals 15 of the DC motor 1 and controls the H bridge circuit 2 so that the DC motor 1 is stopped or it reversely rotates when it detects that a period of fluctuation of the potential difference between the electrode terminals 15 of the DC motor 1 changes at the time of positive rotation of the DC motor 1. <P>COPYRIGHT: (C)2010,JPO&INPIT |
