Patent ID: 8223522

Claim:
A regulated power supply apparatus comprising: an input power converting circuit for generating a rectified voltage signal; an output power converting circuit comprising a plurality of switching elements, the output power converting circuit coupled to receive the rectified voltage signal; an output power storing element coupled with the output power converting circuit; and an output power bidirectional regulating circuit comprising an integrated circuit coupled with the output power converting circuit, the bidirectional regulating circuit including control signals for operating the switching elements to store power on the output power storing element when a voltage applied to the load exceeds a threshold; and to supply a compensating power to an output load from the power storing element when the voltage applied to the load is less then the threshold, wherein the bidirectional regulating circuit is configured to: compare a reference voltage with the applied voltage; configure the plurality of switching elements as a boost converter when the applied voltage is greater than the reference voltage, wherein the applied voltage is reduced by transferring excess power from the applied voltage to the output power storing element; and configure the plurality of switching elements as a buck converter when the applied voltage is less than the reference voltage, wherein the applied voltage is increased by transferring excess power from the output power storing element to the applied voltage.