AUXILIARY POWER SUPPLY FOR BACK-UP

摘要

The present invention discloses a backup power-supply system for emergency that may apply power to a data processing system and recover the information in it when the power supply is cut off or a power-supply connector is abruptly removed due to a careless user, so as to prevent the damage to the information the user is working on. When the power is applied to the system, a battery is charged with the direct current power applied from a linear conversion rectifier by a battery charger, and when the power is not applied to the system while a power switch is being turned on, a DC/DC converter is operated by a power controller to apply the DC power charged in the battery to the main power-supply system after the direct current has been converted into DC/DC power in such a manner that the main power-supply means applies to the system the power for recovering the information a user was working on in the system.