Patent ID: 7911806

Claim:
In a power inverter having a metal case and a control circuit board having a ground plane mounted in said case, a method for reducing electromagnetic interference generated from the power inverter contained in said case comprising the steps of: positioning a metal base plate between said circuit board and said case, spacing first metal fasteners around an outer perimeter of said circuit board so that said first fasteners extend through and are electrically connected to said circuit board ground plane, securing said circuit board to said base plate by said first fasteners so that said first fasteners electrically connect said circuit board ground plane with said base plate, spacing second metal fasteners around an outer perimeter of said base plate so that said second fasteners are spaced outwardly from said first fasteners, securing said base plate to said case by second fasteners so that said second fasteners electrically connect said base plate with said case, and wherein said spacing said second fasteners step further comprises the step of minimizing the spacing between adjacent first and second fasteners.