欧美性xxxx极品hdsex-欧美性xxxx极品hd欧美-欧美性xxxx极品高清-欧美性xxxx极品高清3d-a免费毛片在线播放-a免费视频

LED封裝公司和LED照明燈具生產廠家都會遇到LED死燈景象,作為LED工程師怎樣剖析及處理這些問題？
LED packaging companies and LED lighting manufacturers will encounter LED dead lights scene, as LED engineers how to analyze and deal with these problems?
LED死燈因素主要有以下兩點：
LED dead light factors are mainly the following two points:
1)LED的漏電流過大形成PN結失效，使LED燈點不亮，這種狀況通常不會影響其它的LED燈的作業
1 LED leakage current through the formation of the PN junction failure, so that the LED lamp is not lit, this condition usually does not affect the work of other LED lights
2)LED燈的內部銜接引線斷開，形成LED無電流經過而產存亡燈，這種狀況會影響其它的LED燈的正常作業，
2) the internal connection of the LED lamp is disconnected, and the LED is formed without the current, which can affect the normal operation of other LED lamps,
怎樣避免LED死燈？
How to avoid LED dead light?
?
.
靜電對LED燈來說是一種危害極大的魔鬼，全世界由于靜電損壞的電子元器件不可勝數，形成數千萬美元的經濟損失。所以避免靜電損壞電子元器件，是電子職業一項很主要的作業，LED封裝、運用的公司千萬不要掉以輕心。任何一個環節出疑問，都將形成對LED的危害，使LED功能變壞乃至失效。咱們知道人體(ESD)靜電能夠到達三千伏左右，足能夠將LED芯片擊穿損壞，在LED封裝生產線，各類設備的接地電阻是不是符合請求，這也是很主要的，通常請求接地電阻為4歐姆，有些請求高的場合其接地電阻乃至要到達≤2歐姆。
Static electricity is a great harm to the devil LED lamp, all over the world due to electrostatic damage to electronic components countless, formation of tens of millions of dollars in economic losses. So to avoid static damage to electronic components, is a very important job of electronic occupation, LED packaging, the use of the company must not be taken lightly. Any part of the doubt, will form a LED hazard, so that LED function deterioration and failure. We know that the human body electrostatic (ESD) can reach about three thousand volts, enough to breakdown the LED chip, LED packaging production line, all kinds of equipment grounding resistance is not accord with the request, this is very important, usually request the grounding resistance of 4 ohms, some request high grounding resistance and even to the occasion at less than 2 ohms.
人體靜電對LED的危害也是很大的，作業時應穿防靜電服裝，配帶靜電環，靜電環應接地杰出，有一種不需要接地的靜電環防靜電的效果欠好，建議不運用配帶該種商品，如果作業人員違背操作規程，則應承受相應的警示教學，一起也起到告示別人的效果。人體帶靜電的多少，與人穿的不同布料衣服、及各人的體質有關，秋冬季黑夜咱們脫衣服就很簡單看見衣服之間的放電景象，這種靜電放電的電壓就有三千伏。
Body static electricity on LED is great, work should wear anti-static clothing, anti-static ring with electrostatic ring should be grounded, outstanding, there is a need of electrostatic grounding ring antistatic effect is not good, recommended not to use with the goods, if the operator violate the rules, it should be bear the corresponding warning teaching together, also plays the effect of others notice. How many different body with static electricity, cloth clothes, and wear and his physique, autumn and winter clothes on the night we saw the scene is very simple discharge between the clothes, the voltage is three thousand volts electrostatic discharge.
有些公司選用手工焊接，運用40瓦一般烙鐵，焊接溫度無法控制，烙鐵溫度在300-400℃以上，過高的焊接溫度也會形成死燈，LED引線在高溫下膨脹系數比在150℃左右的膨脹系數高好幾倍，內部的金絲焊點會由于過大的熱脹冷縮將焊接點擺開，形成死燈景象。
Some companies use manual welding, using 40 Watt general iron, welding temperature control, iron temperature at 300-400 Deg. C, high temperature welding will be the formation of dead lights, LED lead coefficient ratio at about 150 DEG C. the expansion coefficient of several times higher in high temperature, gold wire solder joints will be due to excessive thermal expansion will point out the welding, forming die sight lamp.
對于上述景象,LED封裝廠家和LED照明燈具運用廠家應擬定嚴格的LED規范運用手冊，在生產過程中根絕上線景象的發作。
For the scene, LED packaging manufacturers and LED lighting manufacturers should use made LED standard strictly use manual, in the production process according to attack scene on the line.

了解更多詳情，請搜索：濟南標識制作,濟南大型廣告牌,濟南圍擋 濟南大印象廣告傳媒有限公司http://www.wzccdb.cn/  歡迎您的光臨