LED display control circuit, e.g. for use with a motor vehicle display element, whereby the brightness of individual LEDs is controlled using individual control circuits to optimized the color and uniformity of a display

摘要

Circuit arrangement for operation of LEDs (2, 4) has a microprocessor (1) that generates a pulse width modulated signal (PWMOUTA) that controls LED output brightness. A control circuit (3) is used to adjust the brightness of at least one LED in a manner that is proportional to the pulse width of the PWM control signal.