| 摘要 |
<P>PROBLEM TO BE SOLVED: To make a large current flow by a small power control element by a current limiter circuit capable of setting a current limit value in accordance with operating statuses such as starting, stationary rotation and locking. <P>SOLUTION: By setting a threshold value of the current limiter circuit compatible with rotational speed from the output of a lock detection sensor and the output of a rotational pulse sensor, a current limit value is controlled so as to be low at the time of locking, and so as to be high with an increase in the rotational speed at the time of starting. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
