LED application is more and more widely, at present, almost every family has a computer or TV, LED display but LED street lights
bring us convenient while also brought us a lot of inconvenience, such
as static, “beginning”, always make us scared, so how to remove the LED
of the static electricity? The best way is grounding method, the ground
is directly to the electrostatic discharge via wire connection on the
earth, and this is the most direct the most effective in anti-static
measures, for usually use the method of grounding conductors, we require
artificial using the tools of grounding, grounding anti-static hand
ring, and working mesa grounding, etc.
(1) in the process of production, requirement worker must wear grounding
electrostatic bracelet. Especially in the feet, plug-in, after
debugging and welding process, and inspection, quality personnel must be
at least once every two hours to do the bracelet static test, test
record.
(2) during welding, soldering iron should be used as antistatic low
temperature soldering iron, and maintain a good grounding resistance.
(3) in the process of assembly, as far as possible use the low voltage
dc electric screwdriver with ground wire (commonly known as electric
group).
(4) ensure production drawing machine, glue machine, aging aircraft ground effectively.
(5) we require a production environment to deploy grounding copper wire,
such as floors, walls, ceiling, etc., and some situations should be
anti-static materials used. Often, even ordinary gypsum and lime paint
metope can, but it is prohibited to use plastic ceiling and ordinary
wall paper or plastic wallpaper.
LED belongs to semiconductor components, and the p-n junction directly
exposed to the outside, fragile, this type of electronic components
particularly vulnerable to electrostatic damage. Therefore, the LED for
electrostatic protection is a very important work.
LED by electrostatic damage tend to appear after death lamp, the
phenomenon of Ir increase, LED once damage to trace the reason for this
is very difficult, almost impossible to back to concrete is the part out
of the question. Find it is hard to confirm the cause of the problem.
So how to electrostatic protection generally LED the measures? In fact, no and very specific method, commonly used measures are:
A, packaging, anti-static packing bag, the production process of
antistatic relay box etc.; B, static elimination – hand wear
electrostatic ring, tools, equipment safety grounding, static electric
fan, ion fan, etc. C, other aspects – wear anti-static clothing, laid
the static radio pad, strengthen the electrostatic system management,
etc. – all of these measures are relatively common, can consult some of
the products; – but, even if we put the electrostatic protective
measures do your best, then our leds are not necessarily completely
prevent electrostatic damage. Because the LED whether received
electrostatic damage depends on two aspects:
1) electrostatic energy (voltage) is higher than that of the LED itself to bear ability?
2) LED the antistatic ability of stronger?
– that is, if the LED antistatic ability is stronger, it suffered from
static damage is much smaller. According to our understanding, some of
the better quality on the market at present, the antistatic ability high
LED, in the production and processing process does not need to do a lot
of electrostatic protective measures, even without using any will not
damage from electrostatic protective measures. But some antistatic more
bad of the LED street lights
even used the good anti-static measures, but once made after the
product die or are easy to appear by electrostatic breakdown lights dim
lights.
Therefore, we select the LED lamp or LED chip, LED for antistatic
capability assessment – is LED electrostatic protection at the core, the
most scientific, most convenient link.
Source from:http://www.lighting-ledlight.com/
No comments:
Post a Comment