System for controlling the operation of electrically powered apparatus

摘要

The preferred embodiment of the present invention provides a control system which permits operation of electrically powered apparatus in any one of several active modes from a controller mounted remotely from the apparatus. The system is particularly useful for controlling the operation of at least a pair of light sources. The system permits switching, from the controller, energizing power from an energized light source to a de-energized light source. Electrical communication between the controller of the system and the light head can be provided by only two electrical conductors.