ADWEL is a professional manufacturer specialized in developing, manufacturing and marketing of LED light for worldwide sign industry. Since 2008, we have been devoted to designing and producing more efficient and easily-installed LED products. At the same time, we also offer customized design. Our general target is saving total cost for customers.
The company is being improved all the time by working together with many industrial leading partners, today “ ADWEL” the name means reliable quality, good consistency, high light efficiency and cost effective. The company is also very actively providing its products and service to national projects and government signs.
The employees are proud of working with such a top LED manufacturer in sign industry. With the most knowledgeable team and technologically advanced products, we are looking forward to working with customers throughout the world.
LED DIY production of energy-saving lamps
The working principle of LED energy-saving lamp is very simple, the working current of capacitor current limiting the light emitting diode is less than 25MA, plus the C2 absorption of the impulse current lamp switch, effectively led by life's insurance. The capacitor step-down, no electrical energy consumption, no heating, good effect. (current light emitting diode by the capacity of the C1 resolution, such as the maximum figure cannot exceed 474, if the working current of light emitting diode beyond the 50MA, measure the light emitting diode life will be shortened! If you feel that the use of 224 brightness has been too bright, can change the capacity of 104 of the capacitance, so that the working life of LED will exceed tens of thousands of hours.
The definition and influencing factors of LED decay
White LED is currently facing a major problem is the problem of life, due to the price of white LED is still very high, in order to in the lighting market foothold, allows users to both save energy and money, must rely on long life and save the electricity to make up for the lamps and lanterns of high prices. Now, the life of the white LED makes it hard to do that.From the normal use of LED point of view, the most important factor affecting the life of LED is hot. Sources of heat, have normal material resistance in the electricity produced by Joule heat, PN junction produces heat, produce and process in the parasitic resistance of Joule heat and light is attracted to produce heat. The accumulation of heat makes the temperature rise, the temperature rise makes the performance of the chip decline, aging, degeneration.
What is the LED decay
LED light decay is light in the transmission signal attenuation, and at this stage of the global LED manufacturers to make products LED light decay to varying degrees, high power led also exist decay, and temperature have direct relationship is mainly determined by the chip, phosphor and packaging technology. At present, the white LED on the market is likely to decline the issue of primary civil lighting into thetwo major factors influencing the LED decay
1. LED quality problems
The LED chip is not used, the brightness attenuation is fast.The production process has the defects, the LED chip heat dissipation cannot be well from the PIN foot, resulting in LED chip temperature is too high to make the chip attenuation.
2. Use of the conditions of the problem
LED for the constant current drive, there is a part of the LED using voltage driven reasons for LED attenuation.Drive current is greater than the rated drive condition. In fact, cause the light decay of LED products for many reasons, the most critical problem is the heat, although many manufacturers in secondary products should not be particularly pay attention to cooling problems, but long-term use of these secondary LED products, attenuation degree will than focus on heat dissipation of LED products. The radiating effect of the LED chip itself thermal resistance, silver glue, substrate, and colloidal gold and also and decay.