How to solve the problem of micro-brightness after the power failure of LED lighting

After incandescent lamps and fluorescent lamps, LED lamps with low power consumption, high brightness and small size have become the protagonists of the current home lighting market. However, in real life, many residents and electricians have reported that LED lights will still emit weak light after the lighting switch is turned off, which not only affects normal use but also makes people worry about safety issues. Today I will share with you the three main reasons for this phenomenon.

After incandescent lamps and fluorescent lamps, LED lamps with low power consumption, high brightness and small size have become the protagonists of the current home lighting market. However, in real life, many residents and electricians have reported that LED lights will still emit weak light after the lighting switch is turned off, which not only affects normal use but also makes people worry about safety issues. Today I will share with you the three main reasons for this phenomenon.

How to solve the problem of micro-brightness after the power failure of LED lighting

It should be emphasized that the light-emitting element in the LED lighting fixture – the LED semiconductor light-emitting diode device is a device that is very sensitive to current. Please keep this salient feature of LED lamps in mind in order to understand the reason behind it. First of all, the reason why the LED lamps still emit low light after power off is caused by the control of the lighting switch to the zero line (normally stipulated as the live line), which accounts for nearly half of the causes of this kind of phenomenon!

When the lighting switch is controlled by the zero wire instead of the live wire, since the LED lamps are always in a live state, the induction phenomenon between the live wire and the ground wire is very easy to occur, forming an induced current and causing the LED lamps to emit low light! In this case, LED lamps have common features such as continuous emitting low light, other indoor LED lamps or at the same time (extension: fluorescent lamps will flicker after power failure). As for how to deal with this kind of failure phenomenon, I believe everyone knows without the author’s words.

Secondly, with the improvement of living standards, in pursuit of quality of life and convenience, people often purchase lighting switches with indication/backlight functions for operation at night. But everyone knows this, it is very easy to cause the controlled LED lamps to form a path through the switch’s built-in indication circuit after the switch is disconnected (equivalent to the LED lamps and the switch indication circuit being connected to AC220V in series). Although the current value in this loop is small, it is very easy to cause the LED lamps to emit low light! In view of this, when purchasing a lighting switch with a backlight indicator function, you may wish to choose a fluorescent type (commonly known as a luminous type) product that does not consume electricity.

Finally, it is necessary to reveal the reason why the LED lamps are still slightly bright after power failure. Although it is rare in practice, it is very concealed and deceptive. As emphasized above – LED lamps are a kind of semiconductor products that are extremely sensitive to current. If there are multiple wires of other electrical equipment around the LED lamp socket, the induced current between the wires will also cause the LED lamps to break. It emits a shimmer in the electric state! To deal with this situation, the most simple and effective method is to use the tin foil in the cigarette/chewing gum to tightly wrap other wires near the lamp socket, and use the short-circuit shielding method to eliminate this phenomenon.

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