This time a customer complaints our LED lights in the power after the lights can not be completely closed, there is a switch off, the lights are still on the fade, can not completely power off the situation, this situation is easy to make the customer that the lamp is a quality problem Thus affecting product acceptance. The following analysis of this phenomenon from several aspects, so that colleagues with customers to explain and solve the problem.
Lamps turn off the lights after the main reason is to turn off the lights after the lights live, LED chip is particularly sensitive to the current, even a wire, no current loop, in a variety of complex sensing state, there will still be a small amount of light. Specifically, the following situations:
1, the switch control the zero line, FireWire directly into the lamp
This is the most common cause of light. Open control of the zero line, the lights are cut off the LED lights lamp power circuit, FireWire and lighting is still connected, the light will be shimmer.
Solution: re-circuit connection, so that switch control FireWire.
2, switch with indicator light or with the electronic switch
Many switches inside with a light, if the lights turn off after the lights, there will be a current flow through the lamps.
Some lamps use electronic light, such as infrared switches, voice-activated light, and remote control switches. This type of switch can not be completely cut off the circuit. Will cause the lights to turn off the lights.
Remedy: Remove the switch indicator or switch the mechanical switch.
3, double control switch wiring error
There are many ways to connect the dual control switch, if the electrical use of the following wiring method, it will turn off the light after the light.
Solution: in accordance with the zero line into the lights, control the way to re-wiring FireWire.
4, zero line charged
If you solve the above problems, the lights will continue to turn off the lights at night, we must consider the zero line charged. In theory, as long as the switch off the FireWire, the lights on the zero line above there will be no voltage, it can not form the induced current. In actual life, zero line charging is very common. Such as zero line is not good, the line is too long, fine line, or zero line current is too large, will cause zero line charged.
Solution: zero line charged personal difficult to solve, unless the transmission line transformation. So that the lamps do not touch the conductor, such as walls, roofs, and steel keel, etc., can also reduce the luminous phenomenon. But can not be completely resolved.
5, with a lamp protector, can solve a variety of reasons shimmer
The principle is very simple, just a dual-controlled relay only, through the control relay to completely disconnect the fixture and the entire grid circuit isolation. So even if the switch is wrong, zero line charged, there is no impact on the lighting.