Patent ID: 7830685
Filing Date: 2010-11-09
Classification: H02M,H05G

Abstract:
1. A power supply comprising: a DC voltage supply; a control unit; and a plurality of high voltage channels, wherein each high voltage channel includes an inverter, a resonance circuit, a transformer, and a rectifier, wherein the resonance circuit cooperates with the inverter, wherein the inverter includes a first switching unit and a second switching unit configured to apply (a)(i) a voltage of a first polarity to the resonance circuit in a first switching state and (a)(ii) a voltage of a second polarity to the resonance circuit in a second switching state, wherein the control unit switches the switching states in such a manner that (b)(i) in a first mode of operation for high output power, the output power of one or more of the plurality of high voltage channels is adjusted by changing the switching frequency (f