| 摘要 |
PROBLEM TO BE SOLVED: To provide a power supply circuit capable of protecting a capacitor by applying current to a fuse, even if a varistor voltage has variation. SOLUTION: The power supply circuit includes a varistor 12 for short-circuiting input of the power supply circuit, wherein the varistor 12 is connected to a commercial AC power source AC via the fuse 11. As the varistor 12, two or more varistors 12 connected in parallel are used. COPYRIGHT: (C)2008,JPO&INPIT
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