At 08:58 PM 3/6/98 +0100, you wrote: > >Not that high! Today I«ve seen ranges from 220R (NEC 5,5V 0.047 F) down to >only 0.08R (Elna 2,5V 50F) > >Yes, 50F!! Almost like an accumualtor. Exept the price... >/Morgan > >/ Morgan Olsson, MORGANS REGLERTEKNIK, SE-277 35 KIVIK, Sweden \ >\ mrt@iname.com, ph: +46 (0)414 70741; fax +46 (0)414 70331 / > BTW, how do these super caps achieve such high capacities? Are the plates so much closer than older electrolytics or do they use some tremendously good dialectric, or a combination of both? At 50F 2.5V, there would be a whopping 125 coulombs of charge on each plate, an unheard of amount of charge in usually physics, enough to suck a statically charged comb right through a solid brick wall from several meters away, if it weren't for the oppositely charged plate, that is. However, that dialectric must really be something amazing, to lower the E field enough that the force between those plates can be mechanically supported. Sean +--------------------------------+ | Sean Breheny | | Amateur Radio Callsign: KA3YXM | | Electrical Engineering Student | +--------------------------------+ Fight injustice, please look at http://homepages.enterprise.net/toolan/joanandrews/ Personal page: http://www.people.cornell.edu/pages/shb7 mailto:shb7@cornell.edu Phone(USA): (607) 253-0315