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AC power - what is it? Simply and clearly explained

  • Sep 29, 2025
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It's power is either AC or DC power. We will explain the difference and show you, in which situations, what type of electricity is helpful.

AC - and DC-current: Where is the difference?

  • The abbreviation AC stands for "Alternating Current". In German we call it alternating current. The abbreviation DC stands for "Direct Current", i.e. direct current.
  • When alternating current (AC) is changed, the polarity of the current on a regular basis. So a balance of the negative and the positive direction is generated.
  • Due to the many advantages of is used worldwide, mainly AC current. Also in Germany, the AC power from the wall comes.
  • This alternating current changes its direction (polarity) 50 times per second. As a technical term is used for the specification of 50Hz.

AC and DC power in everyday life

  • In everyday life, the direct current (DC) is that we are confronted more and more often. Since batteries can be better with a direct current load, we need to have for a Smartphone, Laptop and co. the DC power.
  • Since from the electrical outlet, but the AC power must be converted to DC power. This is done through the small or large power supply, which connects the socket with the device.
  • You need to however, Ensure that the power plug is accidentally an AC device to a DC or Vice versa. The connectors are always designed in such a way that such problems can not arise.
AC outlet with DC USB port
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Next, we you how to your cell phone without electricity load. In addition to the cool practical Tricks we have also a curious home remedy at the ready.

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