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When making power supplies, a load is required so that you can see what characteristics the finished device produces. For these purposes, you can use incandescent lamps, nichrome spirals, powerful resistors, and so on. But this approach is not very convenient, so I decided to make an electronic load for myself. After looking at the circuits on the Internet, I chose the simplest one, but I was not satisfied with its operation, so I changed it a little for myself, what happened in the end, see this video. Circuit and printed circuit board: https://disk.yandex.ru/d/555oz4SoVa4UXA