Patent ID: 7298632

Claim:
An adjustable high voltage power circuit, comprising: a high voltage source having a power supply circuit side and a groundside; a transformer having a primary winding side and secondary winding side, said primary winding side being attached across said power supply side and said ground side of said high voltage source; a primary winding side voltage sensing and regulation circuit configured for measuring a voltage sense signal and a regulating high voltage output of said high voltage source based on said voltage sense signal; a secondary winding side current sense circuit attached to the groundside of said transformer circuit for measuring internal resistance loss in the secondary windings and providing input to said primary winding side voltage sensing and regulation circuit to cause said primary winding side voltage sensing and regulation circuit to adjust the voltage sense signal to account for internal resistance loss due to the secondary windings of the transformer; and a difference stage for adjusting said voltage sense signal by subtracting a controlled portion of a current that compensates for the internal resistance loss in said secondary winding side, said difference stage coupled to said primary winding side voltage sensing and regulation circuit; wherein the internal resistance loss in the secondary windings is measured as a first potential drop and wherein such circuit adjustment is measured in the same proportion as the first potential drop, to the transformer.