HIGH VOLTAGE HIGH FREQUENCY TRANSFORMER

A shielded transformer winding assembly includes a first winding formed on a circuit board. The circuit board includes at least two first board alignment elements formed therein and a casing including an inner portion and one or more tabs that extend outwardly from the inner portion the tabs arranged to form a notch between them. The assembly also includes a lower winding spacer disposed in one of the tabs that includes a stepped mounting member including first and second mounting member portions. The second mounting member portion has a smaller outer perimeter than and extends from the first mounting member portion. The first winding is disposed within the casing and on the lower winding spacer such that the second mounting member portion extends through one of the at least two first board alignment elements and wherein the first printed circuit board is supported by the first mounting member portion.