Methods and apparatus are disclosed for converting DC power to AC and for driving multiple discharge lamps and, more particularly, Cold Cathode Fluorescent Lamps, External Electrode Fluorescent Lamps, and Flat Fluorescent Lamps. It optionally comprises reloading means suitable for picking up those articles that are ejected from conveyor by ejection means, conveying them and loading them again into pre-orientating device. The heat pipe is either attached to an exterior face of the TO-can package or passes into the TO-can package to efficiently draw heat away from the heatsink assembly.