Patent ID: 8274805

Claim:
A high voltage power supply, comprising: a power converter switching on/off and converting an input direct current power into a direct current power having a preset voltage level; and a voltage multiplier comprising a first multiplying cell multiplying the voltage level of the direct current power from the power converter, wherein the first multiplying cell comprises: first and second capacitors charging the direct current power from the power converter, respectively; a first diode providing a path for transferring the direct current power when the power converter is switched off; and a second diode providing a path for transferring the direct current power when the power converter is switched on, wherein the first diode of the first multiplying cell comprises a cathode electrically connected to the power converter and an anode electrically connected to the second diode, the second diode comprises a cathode electrically connected to the first diode and an anode electrically connected to the second capacitor, the first capacitor has one end electrically connected to a junction between the first and second diodes and another end electrically connected to an input direct current power terminal, and the second capacitor has one end electrically connected to the cathode of the first diode and another end electrically connected to the anode of the second diode.