| 摘要 |
A backup power supply circuit includes a backup power supply unit, a delay unit, and a power supply chip. The backup power supply unit is connected to a computer system. The backup power supply unit supplies power to the computer system when a cutoff of an external power source of the computer system occurs. The power supply chip sets the computer system into an idle state when the cutoff of the external power of the computer system occurs. The delay unit sets a delay time. The delay unit countdowns the delay time at a beginning of the cutoff of the external power of the computer system, and controls the power supply chip to revive the computer system when the countdown is completed.
|
