The goal of the Electrical Power Engineering Technology program is to provide students with a high quality applications-oriented undergraduate education based on state-of-the-art technological equipment associated with electrical power engineering technology. The primary function of a power supply is to convert electric current from a source to the correct voltage, current, and frequency to power the load. Bbefore we begin the never-ending journey of semiconductor and digital electronics, it will be better to have some basic understanding of power supplies.