Patent ID: 7802121
Filing Date: 2010-09-21
Classification: G06F

Abstract:
1. A system for providing a constant output voltage; comprising: a power supply, said power supply receiving an alternating current (AC) input and providing a direct current (DC) output voltage to a load; and an auxiliary power system incorporated with the power supply, said auxiliary power system including: a controller coupled to said DC output voltage of said power supply, said controller monitoring an amount of DC output voltage supplied by the power supply; a capacitor charger coupled to said controller; a capacitor coupled to said capacitor charger; and a boost converter including an input coupled to said capacitor and an output coupled to said load, said boost converter further coupled to said controller, said controller including a comparator which compares said DC output voltage supplied by said power supply with a reference voltage, wherein said controller is configured to detect a power interruption when said DC output voltage is less than said reference voltage and said controller is configured to initiate operation of said boost converter whereby said capacitor discharges energy through said boost converter to said load to maintain a substantially constant DC voltage at said load.