• 2022-06-13

The failure mode of LED lighting product can be classified into: chip failure, packaging failure, electrical stress failure, thermal stress failure, and assembly failure. Through the analysis and improvement of these phenomenon, it will provide help for manufacturers to design and produce LED lighting products with high reliability.   Chip Failure Chip failure refers to the fai...

• 2022-06-08

In January, 2022, JOMOO group awarded Guanghong electronics the "excellent service award". Thanks to JOMOO group, we will make persistent efforts to provide high-quality products and maintain a high level of service.

• 2022-06-08

In June, 2022, G&H  began the certification audit of 16949.

• 2022-06-08

This technical article introduces 5 technology barriers and relevant solutions, including chip fever, operating frequency, and so on.1. Chip fever If the consumption current of chips is 2mA, with 300v voltage and 0.6W power consumption, it will absolutely cause the fever of chips. The biggest current of driving chips come from the consumption of MOS tube, whose calculating formula is I = CVF (cons...

• 2022-06-08

This technical article introduces eight kinds of LED driving power according to driving methods and circuit configuration.   1. According to driving methods, LED power can be classified into two kinds: A. Constant-current-type: 1) It is good but the price is high.   2) Although it is able to afford shorted load, whole-circuit within opening circuit load is prohibited.   3)...

• 2022-06-08

This technical article illustrates 8 techniques of improving LED driving power efficiency.1. Printed circuit board should be short.   2. Optimize the design of the transformer parameters and reduce the eddy-current loss from ringing. It is difficult and you should first know the fundamental knowledge of electromagnetism and design appropriate transformer. The most important is your ...

• 2022-06-06

There are some aspects of LED device which customers should know, here we list the most important four aspects for customers to refer:1. LifeTheoretical service life of the LED devices is 100000 hours, far more than the working life of the other parts. So if device is of quality guarantee, with suitable working current, reasonable PCB thermal design and rigorous display production process, LED dis...

• 2022-06-06

The underlying working principle of LED is the energy level transition.  There could be several energy levels in the electron of an atom. When the electron bounces from high level to lower level,  there would be less energy of electron accordingly, and the part that has been gone from electron is transformed to be sent out as photons which a mass of them are so called laser. Th...