On Thu, 8 Jul 1999 09:48:29 +0200, you wrote: >> Van: Gaston Gagnon >> Aan: PICLIST@MITVMA.MIT.EDU >> Onderwerp: Re: [OT] Just had to relate this.. >> Datum: woensdag 7 juli 1999 20:57 >> >> > 5v. I'm only 30, but I remember how they used to say it'd >> > take a railroad car size to have a 1F cap not so very long >> > ago, much less 10F. Neat to have a small train's worth of >> > cap powering your PIC.. >> >> Oups! I think I owe some apology to someone ;-) >> I did not think so much capacity could be enclosed in so small a format >> either. > >It can't ... It's not a real Capacitor. It's more like a small >rechargable battery. And it has got a rather large internal resistance >(both to charge and de-charge). So, no good to make sparks with :-) > I recently saw ad ad for some caps from Maxwell - I think about the size of a cigarette packet, a few farads at low voltages, but designed for high discharge currents (100s or 1000s of amps) - doubt they're cheap though!