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Anonymous users2024-02-06LED lights are getting darker and darker the more you use them, which is a very common phenomenon. To summarize the reasons that can make LED lights dim, there are no more than the following three points.
LED lamp beads are required to work at DC low voltage (below 20V), but our usual mains power is AC high voltage (AC 220V). To turn the mains into the electricity needed for lamp beads, a device called "LED constant current drive power supply" is required.
Theoretically speaking, as long as the parameters of the driver match the lamp bead plate, it can continue to supply power and use normally. The internal complexity of the driver is relatively complex, and the failure of any device (such as capacitors, rectifiers, etc.) may cause a change in the output voltage, which in turn will cause the lamp to dim.
Driver damage is one of the most common faults in LED fixtures, and it can usually be solved after replacing the driver.
The LED itself is composed of a combination of lamp beads, and if one or part of them is not lit, it is bound to make the whole lamp dim. The lamp beads are generally connected in series and then in parallel - so if a lamp bead is burned, it may cause a batch of lamp beads to not light up.
There are obvious black spots on the surface of the burned lamp beads, find it, connect it to the back with a wire, and short-circuit it; Or replace it with a new lamp bead, which can solve the problem.
The LED occasionally burns one, probably by coincidence. If there are frequent burnouts, you need to consider the drive problem – another manifestation of drive failure is the burning of lamp beads.
Light decay is when the luminous body becomes less and less bright – this is more pronounced on incandescent and fluorescent lamps.
LED lights can not avoid light decay, but its light decay speed is relatively slow, and it is difficult to see the changes with the naked eye. However, it is not excluded that inferior LED, or inferior light bead board, or due to objective factors such as poor heat dissipation, will lead to faster LED light decay.
The above is the reason why Dongling Power will answer for you: "LED lights are getting darker and darker the more you use", I hope it will help you, can you give me a thumbs up?
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Anonymous users2024-02-05Quite simply, the diode of the lamp is broken and needs to be replaced. Generally, the life of LEDs is very long. It's getting more and more subtle to say that the situation is going on. Let's change it. It's cheap to buy one now.
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Anonymous users2024-02-04There is a problem with the filament, or it is about to burn out.
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Anonymous users2024-02-03The possible causes are as follows.
1. The power supply system is unstable.
2. There are parts in the power supply circuit for LED lights that are damaged.
3. The power switch controlling the LED light is not in real contact.
Solution: 1. Restart the power supply system once and observe whether the LED light is normal.
2. Send the lamp to the maintenance site for repair or replacement of the LED lamp.
3. Check whether the switch is in good contact, and if it cannot be solved after re-opening, it needs to be replaced.
LED is the abbreviation of light emitting diode (light-emitting diode), its basic structure is an electroluminescent semiconductor material chip, cured to a bracket with silver glue or white glue, and then connected to the chip and circuit board with silver wire or gold wire.
Then the perimeter is sealed with epoxy resin to protect the internal core, and finally the housing is installed, so the LED light has good shock resistance. The application field involves the production of daily household appliances and machinery such as mobile phones, desk lamps, and home appliances.
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Anonymous users2024-02-02The reasons why LED lights get dimmer the more you use them:
1. The LED chip used is not in good shape and the brightness decays quickly.
2. There are defects in the production process, and the heat dissipation of the LED chip cannot be well exported from the pin, resulting in the high temperature of the LED chip and the aggravation of the chip attenuation.
3. LED is constant current driven, and some LEDs use voltage drive to make the LED attenuate too fast.
4. The driving current is greater than the rated driving condition.
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Anonymous users2024-02-011. The quality of LED products themselves.
The quality of the LED chip used is not good, and the brightness decays quickly. There are defects in the production process, and the temperature of the LED chip is too high, which makes the chip attenuation worse.
2. The heat dissipation performance of LED lamps.
The better the heat dissipation performance, the lower the LED operating temperature, the smaller the light attenuation, and the longer the LED life.
Extend the life of LED luminaires and minimize light attenuation
1. Try to choose LED lamps with good quality and heat dissipation performance;
2. Correct installation of indoor lamps and lanterns is the premise of prolonging the service life of lamps and lanterns;
3. Don't turn it on and off frequently;
4. Regularly inspect indoor lamps, especially chandeliers.
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Anonymous users2024-01-311. First of all, if the power supply is the battery, the battery is out of power.
2. If it is an external power supply, considering the light decay is mainly determined by the LED chip.
3. LED light decay for the following reasons:
First, the quality of LED products themselves:
1. The LED chip used is not in good shape and the brightness decays quickly.
2. There are defects in the production process, and the heat dissipation of the LED chip cannot be well exported from the pin, resulting in the high temperature of the LED chip and the aggravation of the chip attenuation.
Second, the use of the conditions of the problem:
1. LED is constant current driven, and some LEDs are driven by voltage to attenuate the LED.
2. The driving current is greater than the rated driving condition.
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