| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power supply device that suppresses application of an undesired voltage to each device when supplying power to a plurality of devices. Ž<P>SOLUTION: The power supply device includes a feedback voltage switching circuit 15 that is connected to a first measuring part A, close to an electronic device 14A connected to a branch part 13A, in an output line 13 and a second measuring part B, closer to an electronic device 14B connected to a branch part 13B than the first measuring part A, gives a voltage in the first measuring part A to a feedback terminal 22 of a regulator device 12 during a period until charging of a capacitor C2 is completed, and gives a voltage in the second measuring part B to the feedback terminal 22 after the capacitor C2 is charged. The first measuring part and the second measuring part are two measuring parts where a potential difference occurs due to wiring resistance of the branch part 13B when a current for charging the capacitor C2, connected near the electronic device 14B, flows. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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