A motor has a controller that controls the amount of power drawn by motor drive circuitry as a function of the light conversion panels in the system. The packages may be stacked and electrically interconnected without soldering. The second varactor includes an N well disposed in the surface of the P-type substrate, a gate insulator disposed on the N well, and a P-type polysilicon layer disposed on the gate insulator. The insulating material covers the first surface of the die and fills a space adjacent to one or more sides of the die. Alternatively, the lateral displacement can be determined using a base-line amount corresponding to a distance between a detection center of a substrate position detector and a center of the projected image. The second distance is longer than the first distance.