| 摘要 |
In a power supply device according to the embodiment, a second capacitor is inserted between a terminal of a capacitor at the high voltage side and an input terminal. Therefore, when earth fault is occurred at an output terminal of the low voltage side, an input side connected to a DC power supply is galvanically separated from an output side connected to a load by the second capacitor. As a result, earth fault current does not flow continually. Accordingly, the power supply device can reduce current leakage flowing through circuit to zero or near zero in the case where electric leakage is occurred, and therefore can prevent problems (the circuit's malfunction or the like) associated with the electric leakage. |
