In the rectifier circuit; the use of diodes in series can increase the back pressure withstand value (usually the sum of the back pressure of all diodes, but it is best to use diodes of the same specification).
TVS transient suppressor diodes work in the same way as regulator diodes, but there are structural differences.The biggest difference is that the PN junction area composed of the general regulator diode is very small, it can withstand the reverse current is small.
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On March 31, LED packaging manufacturer Everlight pointed out in the meeting in Shanghai that LED backlighting and lighting applications will be the main growth demand for LED industry in the next few years. It is expected that the demand for desktop backlighting will be the mobile phone application market. 6-7 times larger.
Yiguang pointed out that the demand for desktop backlight applications will be 6-7 times larger than the mobile phone application market. The average number of LEDs used per handset is about 10, and the annual global mobile phone market is about 1.35 billion. Even if the LED usage penetration rate reaches 100%, the global mobile phone market requires about 13.5 billion LEDs. But the desktop products include NB laptops, monitor monitors, TV TVs, and the use of LEDs is much larger.
As for the development of LED lighting applications, Yiguang said that the global LED lighting system market size is about 1.86 billion US dollars in 2008. It is estimated that the market size will reach 5.27 billion US dollars by 2012, and the compound annual growth rate will reach 28.5 from 2007 to 2012. %.
In order to ensure the source of LED chips, Yiguang is also a major shareholder of LED chip manufacturers, such as Jingdian, Taigu and Guangguang. (Editor: maysoong) 
In the voltage stabilization circuit; the series connection of the diode is equal to the sum of the voltage stabilization value of the diode. The use of diodes in parallel is theoretically the sum of rated currents, but considering that it is impossible to be absolutely symmetrical, they can only be used below 80% of the total.