| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a load current measuring device capable of measuring surely an actual load current value by excluding a transitional current value. <P>SOLUTION: The content rate of the second harmonic is detected by a second harmonic detection means 7 by paying attention to the fact that the transitional current includes much second harmonic, and hereby it is determined by a load current measuring means 8 whether a current value measured by a current measuring means 6 is a transitional current or an actual load current, and the current value is excluded in the case of the transitional current. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
