> like the power factor correction If they only assumed AC, and if they used AC coupling for the sine/peak/phase detection, then DC would probably look closer

> like the power factor correction If they only assumed AC, and if they used AC coupling for the sine/peak/phase detection, then DC would probably look closer to 0V, and just shut the switching off, right? I can't think of an "easy" way to do it that wouldn't require extra smarts, to handle DC, and everyone knows smarts costs money!