| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power converter that can exactly detect a change in the voltage amplitude of an AC power supply and thus can determine abnormality of a power voltage with a low-cost and small configuration. <P>SOLUTION: The power converter includes a voltage derivation section (20) that derives a power voltage index of an AC power supply (2) at every predetermined timing synchronizing with a power voltage phase of the AC power supply (2). <P>COPYRIGHT: (C)2012,JPO&INPIT |
