What is the relationship between the power supply and brightness of the led tube?
What is the relationship between the power supply and brightness of the led lamp, we should start with the design of the led lamp, it is not a simple relationship. A normal working led tube is usually proportional to the power and brightness, but if the quality of the led tube is very poor, it should be based on the actual situation.
1. How to design a good quality LED tube? For example, an 18w led tube, using 2835 lamp beads, the power of a single lamp is 0.2w. Generally designed for use with 96 or 120 lamp beads. Then 96*0.2w=19.2w, plus the part of the power source consumes about 1-2w, the power of the led light board actually only needs 16.2w, about 19.2-16.2=3 watts of power is useless, that is, 16% The margin is good for protecting the lamp beads or tube, and can prolong the service life. In this normal range, the power brightness of the led tube is a proportional relationship, that is, when the power increases, the brightness will increase, so what is this range? If required, this led tube can be made from 9w, 12w, 14, 16w, 18w, 21w, that is, 21w is the maximum. In other words, this proportional relationship is safe only in the safe range.
2. What is the situation of poor quality and cheap led tubes? It is also an 18w lamp tube, which also uses 2835 lamp beads, but in order to reduce it. The number of design LED lamp beads is 88, and some are simply designed to be 72. Let's calculate, 72*0.2=14.4w, which is the total power of the light board. The previous calculation is 16.2w. That is, the power is not enough, and it is 1.8w short. What can I do? I can only make the led lamp bead work over 0.2w. At this time, what is the relationship between the power and brightness of the led tube? Of course, it is inversely proportional. The power is 18w. , The brightness has dropped, and it can't meet the brightness requirements of the entire lamp. The most fatal disadvantage is that serious light decay occurs and the service life is greatly shortened. At this time, it is found that the power is unchanged at 18w, the brightness is getting darker, the power consumption is a lot, the lighting effect is greatly reduced, and what is more, even the power None of them have done enough, and the brightness requirements have not been met. This is the harm caused by blindly pursuing low-price LED tubes. The result of this led tube is "install this year and replace it next year." It's better not to change and use ordinary fluorescent lamps. Why is it so troublesome?
