Reverse Conducting Thyristor(RCT) is also called Reverse- appreciation Thyristor.The characteristic is that a diode is connected in reverse parallel between the anode and cathode of thyristor, so that the transmitting junction of anode and cathode is short-circuited.As a result of this special circuit structure, it has high voltage resistance, high temperature resistance, short turn-off time, low switching voltage and other good performance.For example, the turn-off time of the reverse thyristor is only a few microseconds, and the working frequency is dozens of KHZ, which is better than the fast thyristor (FSCR).This device is suitable for switching power supply and UPS uninterrupted power supply. One RCT can replace one thyristor and one continuous current diode respectively.
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Li Jiansheng, chairman of Shanghai Dinghui Technology Co., Ltd., which just completed the listing of the New Third Board, seems to have replaced the traditional lighting with the evolution of LED lighting technology and lower prices. But to completely replace, in addition to technology and price, changing the status quo of "lighter money to drive out good money" in the LED lighting market, and establishing a benchmark of value is still a top priority.
Take advantage of packaging
In the process of the domestic LED industry, the twists and turns of Dinghui Technology may be a representative model. The first LED lighting company listed on the New Third Board in Shanghai has a production base of more than 40,000 square meters, with an annual output value of 80 million yuan, but it is almost in the LED market.
Li Jiansheng recalled that before 2000, Dinghui mainly exerted its force on LED displays. Although the market demand is large, enterprises are not large-scale, and demand does not have continuity, and production tends to be scattered. Li Jiansheng said, "In 2000, the investment costs and profits of CDH almost lost, and the company was almost dragged down by bad debts and arrears."
In 2004, Dinghui Technology began to enter the LED lighting industry. In 2006, the company applied for the LED packaging project of the 863 Program of the Ministry of Science and Technology. Since then, the products have been selected by the 2008 Beijing Olympic Games. Today, Dinghui's LED lighting products are used in Shanghai Chenghuang Temple, Expo Theme Pavilion, Yan'an Road Elevated, Nanpu Bridge and 10 bridges along the Suzhou River. However, in the process of manufacturing lamps for landmark projects, Li Jiansheng found that because the company did not have the channel advantages of downstream lamps, although the reputation was made, the profit was not obvious. In the "Hundred Regiments" of LED lamps, CDH began to pull out and play the packaging advantage in the middle of the industry chain, appearing as a light source supplier.
In the LED lighting industry chain, upstream companies manufacture light-emitting chip components, and midstream packaging companies make ready-made chips into integrated circuits and sell them to downstream lighting companies. At present, midstream packaging has accounted for about 25%-30% of the entire industrial chain. Among them, the LED light source module based on COB technology developed by CDH has been staged successfully and will be mass-produced at the beginning of next year. Through this technology, LED light sources can be used with lamps of various shapes. At present, 60%-80% of packaging companies have chosen to transform to COB technology, which has become a new trend in domestic LED lighting.
Stick to the quality bottom line
According to industry insiders, in terms of light quantity, an incandescent lamp can reach 10 units per watt, and an LED lamp can reach 10 times. In the future, the quality requirements for light will become increasingly diverse, and LED lighting will further enter the family. However, the market is full of inferior products, which is the bottleneck currently encountered by the industry.
Nowadays, into the lighting store, the LED lamps of the brand manufacturers have been everywhere, and the price is more close to the people. However, due to overcapacity, a large number of LED lamps compete fiercely, and they do not hesitate to fight the price war, so the quality of the products is also sacrificed. Li Jiansheng said, "The price war at the expense of quality will make a bad reputation in the LED lighting market. In the case of consumers not knowing, the factor that determines the purchase can only be the brand."
Therefore, CDH Technology has strict control over the packaging process and selectively undertakes some high-end businesses, hoping to build its own brand. On the basis of the price of the same level of products is 40%-60% cheaper than the foreign big brands, the quality can be compared. After the listing of the New Third Board, CDH Technology also bid farewell to the state of relying on its own funds "low-speed jogging", hoping to further maintain the product quality of the mid- to high-end market through the capital injection of institutional investors.
( This article is reproduced on the Internet. The texts and opinions expressed in this article have not been confirmed by this site, nor do they represent the position of Gaogong LED . Readers need to verify the relevant content by themselves. ) 
CDH Technology: LEDs still take time to replace traditional lighting
Can LEDs replace traditional lighting? This is not a new problem. The data shows that the output value of the national LED lighting industry this year reached 200 billion yuan, and it is expected to jump to 350 billion yuan next year. The replacement seems to be a more obvious "will become a fact."