Patent ID: 6314008
Filing Date: 2001-11-06
Classification: H02M

Abstract:
A power supply circuit comprising:a voltage source for applying a first alternating voltage at a first source terminal and a second alternating voltage at a second source terminal;first capacitor means having a first and second terminal;second capacitor means having a first and second terminal;first diode means having an anode and a cathode; andsecond diode means having an anode and a cathode,third diode means having an anode and a cathode; andfourth diode means having an anode and a cathode,wherein,the first terminal of the first capacitor means is coupled to the first terminal of the voltage source, and the second terminal of the first capacitor means is coupled to the cathode of the first diode means and the anode of the second diode means,the first terminal of the second capacitor means is coupled to the second terminal of the voltage source, and the second terminal of the second capacitor means is coupled to the cathode of the third diode means and the anode of the fourth diode means,the anode of the first diode means is coupled to the anode of the third diode means to provide an output terminal, andthe cathode of the second diode means is coupled to the first terminal of the second capacitor means, and the cathode of the fourth diode means is coupled to the first terminal of the first capacitor means.