Direct current
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Electricity consists of so -called electrons. In direct current, the electrons all move in one direction, which exactly opposite Alternating current is. Devices that are operated with direct current require one transformer (transformer), because the power grid and thus also the electricity from the socket is alternating current. However, it was precisely this simple conversion of changing into direct current that the high-voltage lines with three-phase alternating current or three-phase current were the decisive factor, because the other way around it would be much more complex and lost.
However, there are also electrical energy sources that generate direct current, such as solar cells or batteries. This direct current is then used in the household, whereby PCs or other audio or video technology devices in particular need this type of electricity, which are thus supplied by the associated power supply. In the industrial area, direct current is used, for example, for so -called electrolysis.
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