I've always found LED Christmas lights to be the worst offender here. Most of the time this issue can be solved by buying quality LED bulbs and using the correc

I've always found LED Christmas lights to be the worst offender here. Most of the time this issue can be solved by buying quality LED bulbs and using the correct dimmer, if you have one. Walmart had 100-bulb LED Christmas lights on sale for $6 a string. This is just around the price of non-LED strings, however these are 120v rated LEDs that run right off the mains with only a fuse to protect them. Needless to say these things are tied to the 60hz phase. Since these were being put on my tree this year, I decided to do something about it. A simple full bridge rectifier fixed most of the issue. I think now the phase on the string is more around 120hz which is much easier on the eyes. I can still see the flicker, however it's not nearly as bad. I believe the thing that would fully rectify the issue (see what I did there) would be to throw a capacitor in the circuit to further smooth out the DC supply. Really it comes down to the idea of a diode; current flows in one direction. In an AC circuit, it flows both directions. Convert it to DC and smooth the supply out and you're using just as much energy without flicker. Of course this ends up costing more if the manufacturer were to implement, so there's that. I really just want DC throughout the house.