A power supply apparatus is provided, which reduces undershoot of a DC source voltage when a power supply interrupt occurs. The power supply apparatus supplies a DC voltage to an output of the power supply apparatus, an output capacitor is provided between the power supply output and ground, and a resistor...http://www.google.de/patents/US7141958?utm_source=gb-gplus-sharePatent US7141958 - Power supply apparatus and power supply control device
