In the present world, with the progress of the electrical system and has been developing quickly. The life of human beings rely on electricity in everyday life always is one of indispensable factors. Because the electrical appliances or things that meet the needs of human being needs to power the electric control functions such as Transportation, communication, industry, consumer and other facilities. The cause of human energy consumption more and more every day. And, at times, resulting in power is not adequate to the needs of humans and many organizations or the government campaign staff and the public to save energy. And to promote the use of alternative energy. Or renewable energy increase. In order to reduce the high cost of production and the main energy in the production of affecting global warming. The party has changed to use clean energy. Or energy pure not destroying the environment and energy waste recyclers such as hydropower, wind energy, solar energy. And energy, etc. to be used in the production of electricity.By this project proposes the ideas to build the test of solar cell with tube l direct Buck-converter circuit, EDI To adjust and control the pressure of the solar cell panel size 17 v. 10 watts. To control the lighting LED size 12 v. 5 watts as needed.
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