AUTOMOBILE POWER SUPPLY DEVICE AND METHOD FOR CONTROLLING AUTOMOBILE POWER SUPPLY DEVICE

摘要

This automobile power supply device supplies electric power, which is output from an alternator 1 and/or a battery 2, to a capacitor 4 via a current adjustment circuit. The current adjustment circuit is provided with: a resistance value adjustment circuit 11 connected between the battery 2 and the capacitor 4 and provided with multiple on/off-switchable resistive components 12a-12d connected in parallel; and a control unit 13 which receives as input the output voltage of the capacitor 4 and controls on/off switching of the multiple resistive components. The control unit 13 is configured to control the on/off switching of each resistive component in response to an increase in the output voltage Vc of the capacitor 4, and change the resistance value of the resistance value adjustment circuit 11.