If you build up a non polar cap by putting two same value electrolytics in series (+to+ or -to-) how do your meters read?
jr
For grins, I just tried the experiment with a couple of 220uf caps that measured close to the same value. I got about 110uf with them connected in series either way. I used a Tektronix DMM850 and an old Heathkit C-3 to make the measurements. The C-3 read a little low (about 100uf).