Preventive measures of led lamp problems
1) The excessive leakage current of the LED causes the failure of the PN junction, which makes the LED lights not to light up. This situation generally does not affect the work of other LED lights
2) The internal connection lead of the LED lamp is disconnected, causing no current to pass through the LED and causing a dead lamp. This situation will affect the normal operation of other LED lamps
Human body static electricity can cause great damage to the LED. Wear anti-static clothing and wear an electrostatic ring. The static ring should be well grounded. There is a kind of static ring that does not need to be grounded. The anti-static effect is not good. It is recommended not to use the strap This kind of product, if the staff violates the operating rules, they should receive corresponding warning education, and at the same time play the role of notifying others. The amount of static electricity in the human body is related to the clothes of different fabrics worn by people and each person's physique. It is easy to see the discharge between clothes when we take off clothes at night in autumn and winter. The voltage of this kind of electrostatic discharge is three thousand volts.
Some companies use manual soldering and use a 40-watt ordinary soldering iron. The soldering temperature cannot be controlled. The soldering iron temperature is above 300-400℃. Excessive soldering temperature can also cause dead lights. The expansion coefficient of LED leads at high temperatures is about 150℃. The expansion coefficient is several times higher, and the internal gold wire solder joints will be pulled apart due to excessive thermal expansion and contraction, resulting in dead lights.
Prevent damage
The reason why the LED has a long life is only compared to the more suitable working environment. There are two main reasons for the damage of the LED lighting: one is the overcurrent impact, that is, the current applied to the LED exceeds the LED technical data manual The maximum rated current in, including over-voltage caused by over-electric shock; the other is overheating damage. But how can we prevent LED lighting from being damaged in reality?
First, prevent electrical shocks and prevent transient overcurrents. Generally, electrical shocks are caused by extremely large transient overcurrents, and the direct consequence is to cause damage to other parts near the welding line, such as sealing materials.
Secondly, do a good job of the heat dissipation system. Nowadays, the related technology of the LED heat dissipation system in China is not very mature, and excessive heat will directly cause damage to the internal components of the LED lighting, which will lead to the failure of the LED lighting.
