| 摘要 |
PROBLEM TO BE SOLVED: To fuse a fuse of another system when a fuse of either of systems is fused when an electric current is supplied to relative loads (for example, an actuator and ECU) of two systems. SOLUTION: The safety device of the power circuit includes a low voltage power circuit 2B for supplying the electric current to the ECU 3 through a fuse 5B for a low voltage, a high voltage power circuit 2A for supplying the electric current to the actuator 4 through the fuse 5A for a high voltage, and a logic circuit 20 for forced fusing for forcibly fuse an other fuse by applying an excess current to the other fuse when the one fuse out of the fuse 5B for the low voltage and the fuse 5A of the high voltage is fused.
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