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Solar panels are devices that consist of solar cells that convert light into electricity. They are called solar or sun or "sol" because the sun is the strongest light source that can be utilized. Solar panels are often called photovoltaic cells, photovoltaic can be interpreted as "electric light". Solar cells rely on the photovoltaic effect to absorb energy. In general, a solar cell is a semiconductor that can absorb photons from sunlight and convert it into electricity. The solar cells are made of very small pieces of silicon coated with special chemicals to form the basis of solar cells. Solar cells generally have a minimum thickness of 0.3 mm made from sliced ​​semiconductor material with positive and negative poles. In solar cells, there is a connection (function) between two thin layers made of semiconductor material, each of which is known as a "P" (positive) type semiconductor and an "N" (negative) type semiconductor. Type P silicon i...

The world of technology is developing very rapidly. Moreover in the field of communication electronics. Lately known GPS technology (Global Positioning System). This technology is able to provide information on the position of objects that are on the surface of the earth. The information presented has three-dimensional coordinates, which are the position with respect to latitude, longitude, and altitude from sea level. In this study, an experiment was carried out on a GPS system installed somewhere. Then GPS data is accessed remotely using a cell phone. The type of mobile application used is the SMS application. So in this system, if the user wants location information, the command is given by SMS. The contents of the SMS are made with codes so that illegal users can be restricted. The purpose of this Final Project is to build a capable system to produce a tracking system with GPS that is reliable and accurate. So as to produce tools that are useful for the community. Get Link ...

     The turbojet is an air-breathing jet engine, usually used in aircraft. It consists of a gas turbine with a propelling nozzle. The gas turbine has an air inlet, a compressor, a combustion chamber, and a turbine (that drives the compressor). The compressed air from the compressor is heated by the fuel in the combustion chamber and then allowed to expand through the turbine. The turbine exhaust is then expanded in the propelling nozzle where it is accelerated to high speed to provide thrust. These modern engines use a gas turbine engine core with high overall pressure ratio and high turbine entry temperature and provide a great deal of their thrust with a turbine-power fan stage, rather than with pure exhaust thrust as in a turbojet. These features combine to give a high efficiency relative to a turbojet. All practical air-breathing jet engines are internal combustion engines that directly heat the air by burning fuel, with the resultant hot gases used for propuls...