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In the first column, on the RS Elektronika channel, we will consider why we have 230V in our home sockets and why it is alternating current. If you liked the episode, we invite you to like our Facebook page: / rselektronika If you have any suggestions regarding the topics of the next episodes, send them to: [email protected] We also invite you to our second channel on audio - Noise Reduction / reduktorszumu We invite you to the website http://reduktorszumu.cupsell.pl to buy T-shirts and gadgets with the Noise Reduction logo. In this way, you can contribute to the development of our channel.