[sdiy] 60 Farad capacitors from Korea

[James Petts]

A farad is the capacitance of a condenser with one electrode having 1
coulomb of charge, the other -1 coulomb, with a potential difference
of 1V between the plates.




On Tue, 22 Feb 2005 23:41:47 -0500, anthony <aankrom at bluemarble.net> wrote:
> 
> 
> >I tried unsoldering a couple of 2 farad caps from a video recorder, and
> > every time my soldering iron touched the solder joint I got a dirty great
> > spark. Investigation proved that it was not electrical (no return path to
> > start with, and the spark was orange). Turns out these buggers had leaked
> > and the electrolyte was explosive. Heat it and it goes bang!
> 
> Wacky.
> Do you know what it was? If I recall correctly these caps aren't
> electrolytic even. Some sort of carbon material. Their ESR probably sucks
> ass, but for what you'd use them for that wouldn't matter at all.
> 
> OT (sort of) Question to (electro-)chemists out there:
> Is a Farad equal to the number of electrons that would correspond to one
> Mole of hydrogen (protons)?
> Like a quantity of electrons equal to Avogadro's number (which is a big
> number).
> 
> If so then 60 Farads would be able to electrolyse 15 moles of hydrogen
> (gas - H2) which given hydrogen's molar gas volume of 25L, would be 375L of
> hydrogen gas at atmospheric pressure. (Sorry I had a college flashback)
> 
> > Ken
> >
> 
>