Patent attributes
Lighting circuits using LED light engines and strips of linear lighting using these circuits are described. The lighting circuits are designed to produce different levels of light output at least in part using onboard components. In some embodiments, the circuit contains several current-setting elements, such as resistors, which are coupled to their own terminals such that the light output of the lighting circuit is determined by which of the terminals are connected to power. In other embodiments, a transistor in the lighting circuit may be adapted to allow or prevent current flow in the circuit based on a control signal applied to its gate. The circuit thus has separate power and control signal lines, and an external device, such as a pulse-width modulation signal generator, may be applied to the control signal line to modulate the light output.
