09-19-2011, 10:43 AM
You could also wire two 20 mf in series and you would then end up with a 10 mf at twice the voltage. Some like to add bleeder resistors, say 330 K across each cap when they wire them this way. This is done a lot in guitar and audio amps. Jameco is also a good source, and it's pretty easy to find enough stuff you can't live without to take the sting out of shipping.