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They did this kind of research for the first time and faced difficulties from the beginning. For example, when using LED to imitate the incandescent filament, the power of the light source can not exceed the incandescent lamp, can not guarantee the illumination and so on. They studied recent technical literature, conducted numerous experiments, and finally successfully developed LED collection points. A few months later, they tested with a 12w power model beacon light source, but did not guarantee illuminance and light angle.
They moved their research sites to a lighthouse island in the West Sea of ​​North Korea, deepening their research. Director Cui and other leading cadres have made efforts to protect the required conditions. After a variety of tests and calculations, the research team has studied ways to further increase power and reduce the light loss rate to less than 10%.
The lighthouse they developed used LED light source to ensure 18 to 20 nautical miles of illumination, and the power consumption was reduced by a quarter. They also developed various controllers that maximize the power generation capacity of solar cells, intelligent high-speed chargers, converters with 96% efficiency, and timers. Not long ago, LED light sources and lighthouses using solar cells were completed. Power outage system.
The lighthouse they developed on the sister island of the West Sea in North Korea is now shining. Based on these results, the team continued its research work on replacing the lighting of electric locomotives with LED light sources. This work has been done before, but it takes a lot of money to guarantee 700-800 meters of illuminance. They focused their research on this aspect and developed lenses and collection points in new ways. The results of running the experiment resulted in less than half the power and cost savings. In addition, not long ago, the institute installed thousands of led lights for the first secondary school in Pyongyang, and then installed LED lights suitable for specific situations in many units. Now they are working hard to develop energy-saving LED lights such as light sources for lighthouses that are also able to shine in the clouds.
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North Korea developed LED lighthouse
The director of the Electronic Technology Products Research Institute, Cui Dasheng, proposed to develop the idea of LED lighting suitable for use on the lighthouse. The research institute organized the research team of Li Mingzhe as the head of the research team, specializing in the use of solar cells led light source , lighthouse with no power outage system.