Patent ID: 7372441

Claim:
A circuit for over-driving a light emitting diode comprising: at least one white super-luminescent light emitting diode having a maximum forward continuous current rating; a power supply that provides a pulse width modulated signal; an analog memory connected to said power supply; a pulse generator comprising a window comparator engaged with said analog memory and responsive to a portion of said pulse width modulated signal an array of amber light emitting diodes controllably connected to said pulse generator through an inverter and a timer; and at least one power driver controlled by the output of said pulse generator and operably connected with said at least one white super-luminescent light emitting diode, said array of amber light emitting diodes and with said power supply so as to over-drive said at least one white super-luminescent light emitting diode with a current having a magnitude above said maximum forward continuous current rating, and said array of amber light emitting diodes are illuminated at time intervals determined by said timer that are wholly distinct from time intervals when said at least one white super-luminescent light emitting diode is over-driven.