DEVICE AND METHOD FOR SUPPLYING POWER TO A VEHICLE, SEMI-CONDUCTOR CIRCUIT DEVICE FOR USE IN THE SAME AND COLLECTIVE WIRING DEVICE FOR A VEHICLE OR AN AUTOMOBILE

摘要

A power supply wire is laid out in a loop fashion from a battery power supply, and a power supply relaying circuit is provided at a point along the power supply wire, whereby power is supplied to an electric load connected to a terminal unit of collective wires from the power supply relaying circuit. This can reduce the number of electric wires not only for control signals but also for power supply. The power supply relaying circuit may double as the terminal unit.