Abstract: A system and method for operating a lighting array is disclosed. In one example, the system and method detect the presence or absence of short circuiting current flow through a light emitting device and provide an indication of the same. The system and method may also increase or decrease current flow through the lighting array to compensate for reduced lighting output or to reduce the possibility of lighting array degradation.

Abstract: A system and method for operating a lighting array is disclosed. In one example, the system and method detect the presence or absence of short circuiting current flow through a light emitting device and provide an indication of the same. The system and method may also increase or decrease current flow through the lighting array to compensate for reduced lighting output or to reduce the possibility of lighting array degradation.

Abstract: An access door to a pressurized enclosure such as an ear corn dryer swings about an axis of rotation that divides the door into first and second panels. If the door axis of rotation is midway between the door edges, forces on the panels from the pressurized air when the door is closed are substantially equal. A person need exert only a nominal force on one of the panels to open the door. Preferably, one of the panels has a larger area than the other panel. The force produced on the larger panel keeps the access door closed such that a measurable force must be exerted by a person to open the door. The door is sealed on opposite faces when the door is closed.