| 摘要 |
[0045] A power supply for a portable computer comprises a power adapter case that houses an AC power adapter circuit and a battery charging circuit. A portable computer using this power supply includes a rechargeable battery but does not require a conventional battery charging circuit. In another implementation, the power supply includes a signal line connecting the AC power adapter circuit to the battery charging circuit, wherein if the AC power adapter circuit is about to overload, the AC power adapter circuit transmits a signal over the first signal line. The battery charging circuit, upon receiving the signal, may cease recharging the batteries. In addition, the portable computer may do one or more of isolating the AC power adapter circuit, commencing a shut down of the portable computer, reducing display brightness, reducing CPU speed, entering a sleep mode, shutting down wireless communications, or shutting down unnecessary peripherals. |
