Spellman has invested in and developed the use of oil insulation technology, giving its engineers and designers, when appropriate, another method of high voltage packaging technology. Oil, as an insulating media has some distinct advantages in particular situations. This capability has been utilized in several of Spellman's MONOBLOCK® designs, where a power supply and an X-ray tube assembly have been integrated into a single unit. The results of this integration include a reduction of the size and weight of a unit, in addition to providing excellent heat transfer characteristics and eliminating costly high voltage cables and connectors. MONOBLOCK®