Uninterruptible power supplies
Uninterruptible power supplies are mainly divided into two groups, full sinusoids or modified (cropped, false different manufacturers call them different)
Full sinusoids - mainly used in the system and where is the asynchronous engines ( (circulator pumps for boilers, fans, etc.), which require a bosom full of that to get a smooth rotation
Modified are sinusoidal fits in all other cases, when used in the digital power supplies, heating and there, a light bulb and so on.