Patent ID: 7695599
Filing Date: 2010-04-13
Classification: H01J,H02M

Abstract:
1. A discharging power supply, comprising: a direct current power supply unit; a control unit configured to control an output of the direct current power supply unit; and a vibrating current generation unit having a capacitance connected in parallel with a pair of outputs from the direct current power supply unit and an inductance connected to at least one of the pair of outputs, wherein the discharging power supply outputs discharging power via the vibrating current generation unit, the control unit is configured to control the direct current power supply unit so that current outputted from the direct current power supply unit does not exceed a limit current value in at least a portion of a range of voltage that can be outputted from the direct current power supply unit, the portion of the range excluding zero voltage, the limit current value has a positive correlation with the absolute value of the voltage in the at least a portion of the range of voltage, and the limit current value corresponds to an upper limit current satisfying the equation:  where I is current outputted from the direct current power supply unit, V is voltage outputted from the direct current power supply unit, L is the inductance, C is the capacitance, Va is arc voltage, and K is a multiplicative factor of amplitude.