Patent ID: 6738275
Filing Date: 2004-05-18
Classification: H02M,H05G,Y02B,Y10T

Abstract:
A high-voltage power supply for a device which has a load, comprising:a first resonant inverter providing a first output signal and a second resonant inverter providing a second output signal; a control circuit including a voltage controlled oscillator and a phase shifter, said control circuit being coupled to the first inverter and to the second inverter constructed to control a phase difference between said first output signal and said second output signal; and at least one high-voltage transformer including a primary side and a secondary side providing power to a load; said primary side including a first pair of primary coils connected in parallel to receive the first output signal and including a second pair of primary coils connected in parallel to receive the second output signal; the high-voltage transformer being constructed so that the first output signal having a first phase and the second output signal having a second phase are summed to provide a variable power to the load depending on the phase difference between the first phase and the second phase.