| 摘要 |
PROBLEM TO BE SOLVED: To protect a DC power source apparatus from being damaged, when an AC adaptor with different output voltage or polarity from the AC adaptor intended originally to be connected is connected. SOLUTION: The voltage and the polarity input from an AC adaptor are detected, and when connection to an AC adaptor with the output voltage or the polarity different from those of the AC adaptor originally intended to be connected is detected, an alarm is given based on the detected output.
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