I would like to take some American LED bulbs and use in Europe where there is 220v supply. Is it possible to to do that wither with:
1. voltage converter (Fluorescent bulbs didn't work this way for some reason)
2. Connecting a resistor in series to drop the voltage to 110V.
3. Using two bulbs in series.

Thanks.

You should realize that LED light bulbs are not pure resistive loads and may react poorly to the 50 hertz in Europe... worst case you blow them up, be careful "you" don't in the process...