| 摘要 |
A power supply device supplies DC power to a load and includes: a shunt resistor connected in series to a low-potential side of the load; a power supply control device for controlling a power supply state to the load according to an amount of a voltage drop across the shunt resistor; a ground fault detection element connected in series to the low-potential side of the load to cause a voltage drop; and a limiting device for limiting a supply of power by the power supply control device by determining that a ground fault occurs in a case where an amount of a voltage drop, which occurs when a detection current flows through the ground fault detection element, is less than a predetermined threshold. |
