Patent ID: 6856525
Filing Date: 2005-02-15
Classification: G05F,H02M

Abstract:
1. A power supply apparatus comprising: a power supply; a voltage regulator; first and second non-ferroelectric capacitors provided between said power supply and said voltage regulator in parallel to said power supply; a first switch provided between said power supply and said first capacitor to open or close in response to a first control signal; a second switch provided between said power supply and said second capacitor to open or close in response to a second control signal; and a control circuit which generates said first and second control signals to said first and second switches such that said second switch opens and then said first switch closes when a voltage of one of said first and second capacitors decreases to a first predetermined level, and such that said first switch opens and said second switch closes after a first predetermined time period from the closing said first switch, wherein the voltage regulator outputs a voltage, and wherein the control circuit comprises: