A new series of high efficiency 250 watt AC-DC Power Supplies that feature both ITE and non-patient contact and non-patient critical medical safety approvals. The new LPS200-M series power supplies are compact open-frame designs; measuring just 3 x 5 inches, with a height of only 1.5 inches, they have a typical full load efficiency of 88 percent and a power density in excess of 11 watts per cubic inch.