Methode Electronics, Inc.
CLONED CONSTANT CURRENT LED DRIVE CIRCUIT AND METHOD FOR USE

Abstract:

A light emitting diode (LED) circuit is disclosed haying a plurality of LEDs each having a respective current path. A controller may be included for controlling the LEDs. A first set of LEDs of the plurality of LEDs are connected to respective first set transistors and a first current sink to drive a constant current through each of the first set of LEDs and the first set of LEDs includes one or more LEDs, and the LED circuit may include at least one second set of LEDs of the plurality of LEDs that are connected such that the constant current in the first set of LEDs is duplicated. in the at least one second set of LEDs and the second set of LEDs includes one or more LEDs.