PLEASE PUT WORKING CIRCUITS only HERE (for everybody please give a share)

[Magluvin]

 

[MrMag]

Forest, just use 2 electrolytic caps in series with the + together. If you want 100uf then each cap need be 200uf
Try to use quite a bit higher voltage ratings as to what you need.  If you need 200v, us 400v, just to be in the clear.
How many uf are you looking to use?
Mags

You can't reverse an electrolytic capacitor + is always positive and - is always negative. It could explode if you hook it up backwards.

[Magluvin]

You can't reverse an electrolytic capacitor + is always positive and - is always negative. It could explode if you hook it up backwards.

Then explain non polarized electrolytic caps.

Mags

[MrMag]

Then explain non polarized electrolytic caps.

Mags

I guess if they are not polarized, it would be OK. But the ones that are polarized are a different story.

[CompuTutor]

Then explain non polarized electrolytic caps.

Mags

"Special capacitors designed for AC operation are available, usually referred to as "non-polarized" or "NP" types. In these, full-thickness oxide layers are formed on both the aluminum foil strips prior to assembly. On the alternate halves of the AC cycles, one of the foil strips acts as a blocking diode, preventing reverse current from damaging the electrolyte of the other one."

Reference:
http://en.wikipedia.org/wiki/Electrolytic_capacitor