Power Supply Equipment is one of our initial product lines. We began when linear power supply equipment was prevalent and we primarily charge various rechargeable cell batteries. Our products have evolved from AC/DC conversion to include DC/DC, DC/AC, and AC/AC inverters. The efficiency of our products increases with the development of switching power supply and more recently new semiconductor materials (e.g. SiC, GaN) further increase the power and efficiencies of our products.