LED lamps and lanterns at night slightly bright six main reasons and solutions

The six main reasons and ultimate solutions for LED lamps and lanterns to be slightly bright at night after turning off the lights. At this stage, LED has fully replaced halogen and fluorescent light sources because of its energy saving and power saving, high brightness, long life and other advantages.

LED light source excitation current is small, quite sensitive to voltage and current, the use of a variety of complex reasons will cause induction luminescence, even after the lights off will also emit a shimmer, affecting normal sleep and accelerate the light decay of lamps. Generally are caused by the following reasons.

First, the switch controls the zero line.

This is a relatively common cause, the electrician wiring when the switch controls the zero line, or the electrical box into the line when the zero-fire connection is reversed. The switch controls the zero wire, the fire wire is still connected to the lamp, it will emit a shimmering light. Solution: adjust the wiring, so that the switch control the fire wire.

Second, the dual control switch has the wrong connection

Dual-control switch has several wiring methods, if the wrong connection method, will also turn off the lights after the dim light. Solution: Install the normal control fire wire connection rewiring.

Third, the switch with indicator lights, with the electronic class switch

Switch with indicator inside, there will be a slight current flow after the lights are turned off. If the lamps and lanterns use electronic switches, such as infrared, acoustic control, remote control switches. Will also appear after the lights off shimmering phenomenon.

Solution 1: Change the switch.

Solution 2: Connect 500K resistor in parallel with the light inlet part. But this method requires high technical requirements, non-professionals are not easy to operate. And the zero line charged, or patch leakage caused by shimmering invalid.

Fourth, non-isolated drive, light source patch and substrate leakage

Many lamps and lanterns for cost considerations are used in poor quality resistive buck drive, or light source patch quality is poor, there is patch and substrate leakage. Substrate copper and substrate capacitive effect, will also cause leakage. This is why a room, the light has some light and some do not light the reason. Solution: change the lamps and lanterns, spell luck.

Fifth, the zero line is charged, in fact, the zero line is charged is the most fundamental reason for the light off the light.

If the switch control is the fire wire, the use of ordinary wall switches, or light, is the zero line charged. Zero line charged is a very common phenomenon. If the zero line grounding is not good, the transformer three-phase load imbalance, the line is too long, thin wire diameter, or the zero line current is too large, will cause the zero line charged.

Solution: re-grounding the zero line or low-voltage transformation.

Sixth, and finally recommend a simple and effective solution is to use LED lamps and lanterns protector, can completely solve a variety of reasons to send shimmer.

Connect the protector to the inside of the lamp, turn off the light will disconnect the lamp and the utility connection. Even if the zero line is charged, patch leakage, the switch is connected wrong, there will be no current conduction to the lamps and lanterns above.