A MULTI POWER SUPPLY SYSTEM FOR A PORTABLE DEVICE

摘要

The present invention discloses a multi power supply system for a portable device, particularly a power supply system having a multi power input interface and a universal serial bus (USB) power output interface and capable of receiving a solar electric power and a general battery power. The invention not only provides a multiple of power transmission interfaces of a rechargeable battery of an electric backup power source for supplying power to the portable device, but also achieves the rectification and protection effects.