Extinction of petroleum, which is used in the transportation and electricity. Cause to push research in renewable energy, such as electricity from the sun, wind, water, power, these are often sent paid out. And the rest is usually stored in the storage device. The most is the level and the shape of the voltage is uneven. And in the system must be changed the current or voltage. The shape of the current or force as the electric power that very often use the power electronic circuits, such as power circuits of electric railway electric plane of solar energy. The steamer blue from solar energy.
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