Is it possible to install a voltage regulator at the output of the 12-220 V converter?
The Chinese converter 12-220 produces a modulated sine wave, which is harmful to household appliances. If you put a voltage regulator on the output, will this solve the problem with a pure sine wave?
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Hello! It will improve slightly, but it’s rather a waste of money. But you are not quite right. What household appliances do you feed them with? To a computer, a television, and in general to almost all modern electronic equipment that runs on switching power supplies, the shape of the sine wave is indifferent. The same applies to light bulbs, as well as heaters. Refrigerators, drills and other equipment with engines require a “pure” sine wave, but it all depends on how long you will be feeding it.
The voltage stabilizer does not have the task of smoothing the voltage fronts, it only switches the taps of the autotransformer. But the inductance will make a certain effect in the waveform, you see a similar effect in the figure below, here such a converter is connected through the UKRAINE ferroresonant stabilizer.