To get the buck/boost element, all of that is required is two separate switches so which the AC input might be connected to on the list of two Principal faucets, while the load is connected to the opposite, As a result using the major transformer's Major windings as an autotransformer. https://www.imna.ir/news/753182/معرفی-7-شرکت-برتر-فروش-یو-پی-اس-در-اصفهان