| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem that a difference occurs in measured current due to variation in current detecting means, and abnormality of an L load cannot precisely be detected in a method for preparing the current detecting means at both ends of the L load, in the current detecting means for measuring current flowing in the L load and relatively comparing current values of the two current detecting means. <P>SOLUTION: The current detecting means is set to one detection resistor 1. Current flowing in it is converted into DC current. Current of positive polarity and that of negative polarity are measured separately, and a difference of current values of positive and negative polarities is compared and judged. Thus, influence of variation of the resistor itself is eliminated, and abnormality of the L load can highly precisely be detected in the abnormality detecting circuit. <P>COPYRIGHT: (C)2008,JPO&INPIT |
