Abstract: A high voltage device includes a circuit board 12 surrounded by an enclosure 11, potting 13 to provide electrical insulation between the circuit board 12 and the enclosure 11, and a layer of material 14, having a different resistivity than a resistivity of the potting 13, dividing the potting into separate and discrete sections. The layer of material 14 can be multiple layers. Each layer 14 can have a voltage applied, and a voltage of any layer 14 closer to the circuit board 12 can have a higher absolute value than any layer 14 farther from the circuit board 12.

Abstract: Machine components such as windings of motor stators and the like are treated by totally impregnating and encapsulating the windings through the use of an apparatus on which the motor stator or the like may be selectively mounted on a platform in one of two positions 180.degree. apart and then inclined downwardly from the horizontal with the motor stator then being rotated and the encapsulating fluid poured therein during rotation thereof. Rotation is continued until the thermosetting epoxy hardens, thus eliminating the tendency of the fluid material to drip off because of gravity.