| 摘要 |
<p>PROBLEM TO BE SOLVED: To detect an abnormality of an AC power source with an inexpensive and simple configuration. SOLUTION: The personal computer having an auxiliary power unit 3 for supplying power at the time of abnormality in an AC power source 17, is equipped with an abnormality detecting circuit 10 provided on a loop 9 for feeding back the output data of a computer 1 as input data and a switching element 12 provided in the abnormality detecting circuit 10 so as to open the loop 9 at the time of abnormality in the AC power source 17.</p> |
