Patent ID: 6756774
Filing Date: 2004-06-29
Classification: H03H

Abstract:
A constant voltage source comprising:a constant voltage supplying circuit comprising an operational amplifier for supplying an output voltage to a load and a feedback circuit for feeding back said output voltage to said operational amplifier; a first inductance unit disposed between said constant voltage supplying circuit and said load; a first bypass capacitor of which one terminal is couple between said first inductance unit and said load and the other terminal is coupled to a constant voltage unit; and a compensation circuit comprising a second resistor, a second inductance unit and a second bypass capacitor, one end of each of said second resistor, said second inductance unit, and said second bypass capacitor being coupled to each other, wherein the other end of said second resistor is coupled to an end of said first inductance unit near said constant voltage supplying circuit, the other end of said second inductance unit is coupled to a load said end of said first inductance unit and the other end of said second bypass capacitor is coupled to said constant voltage unit.