Why do LED lights get dimmer with use?
Ningbo Sunshinelux Lighting- led light manufacturer in China
LED Work Light, LED Flood Light, LED High Bay Light, LED Street Light, Solar LED Flood Light Manufacturer
Why do LED lights get dimmer with use?
LED light decay means that after a period of time when the LED is lit, its light intensity will be lower than the initial light intensity and cannot be recovered, that is, the reduced part is called the light decay of the LED.
The more you use the LED light, the darker it is because the LED light will have the phenomenon of light decay.
The light decay of LED lamp products is the weakening of the signal of light in transmission.
It is a very common phenomenon that LED lights become dimmer as they are used. In addition to light decay, the reasons for dimming LED lights are as follows:
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Drive Corruption
LED lamp beads are required to work at low DC voltage (below 20V), but our usual mains is AC high voltage (AC 220V). To turn the mains into the electricity needed by the lamp beads, a device is needed, called "LED constant current drive power supply".
Theoretically speaking, as long as the parameters of the driver match the lamp bead board, the power supply can be continuously supplied and used normally. The inside of the driver is more complicated. The failure of any device (such as capacitors, rectifiers, etc.) may cause the output voltage to change, which in turn causes the lamps to dim.
LED burns out
The LED itself is composed of lamp beads one by one. If one or part of them does not light up, it will inevitably make the whole lamp dim. The lamp beads are generally connected in series and then in parallel - so if a certain lamp bead is burned, it may cause a batch of lamp beads not to light up.
There are obvious black spots on the surface of the burned lamp bead, find it, connect a wire to its back, and short-circuit it; or replace it with a new lamp bead, all can solve the problem.