| 摘要 |
A power supply apparatus is provided in the exemplary embodiments. The voltage generation circuit has a switching element. The control circuit controls a switching operation of the switching element. The voltage comparator compares an output voltage from the voltage generation circuit with a predetermined test voltage. The timer circuit is activated, when the output voltage from the voltage generation circuit is lower than the test voltage, and then measures elapsed time. The control circuit stops the switching operation of the switching element when the elapsed time measured by the timer circuit has exceeded a predetermined period of time. |
