LED driver can use strict constant current, constant current, CC) output tolerance design, however, tighten CC tolerance will increase the cost of LED drive. Due to the forward current after a group of LED, therefore, a low cost solution is to design personnel use the feedback system to control LED color partial, through the feedback to compensate for color changes.
Sorting LED usually in manufacturing bring influence, resulting in the LED procurement cost increase. Because of LED sorting Settings is specific, some LED driver may still can't match many classification LED application of positive bias current Settings. In addition, temperature effect and life degradation effect can cause the change of color lighting equipment.


The company operating the product such as ：
led tube fluorescent 
t5 led tube 
led tube manufacturer