摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a capacitor device capable of effectively sensing a reduction in a capacity of a capacitor using vapordeposited electrodes and externally effectively outputting an alarm. SOLUTION: The capacitor device comprises a capacitor 12 using a metallized film, a voltage converting means 15 for detecting a current flowing to the capacitor 12 to output a voltage proportional to an amplitude of the current, and an output circuit 16 for outputting on abnormal signal if an output signal Vs of the means 15 is lower than a reference voltage Vr. In this case, since an AC current flowing to the capacitor 12 is detected and a reduction on the capacity of the capacitor 12 is sensed by a decrease in its detected current, a reduction in the capacity of the capacitor 12 can be effectively sensed. Since an abnormal signal is output by the sensing of the reduction, an alarm can be externally effectively output.</p> |