Backup power-supply system for emergency

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