Tony Duell wrote:
>
> > >
> > > Just a sanity check, here. What would be the _DC_ rating of a
> > > momentary switch rated at 3A, 125VAC?
> > >
> > > Doc
> >
> > About 175 volts. Most 1 farad caps are rated at 5.5 volts.
>
> Never!. A DC arc is much harder to extinguish than an AC arc (the
> simplistic explanation is that the AC voltage drops to 0 twice per cycle,
> thus helping to extinguish the arc). The DC rating of a mechanical switch
> is not sqrt(2) times the AC rating.
>
I was thinking of the voltage break down here. I had forgotton about
the arcing bit.
--
Ben Franchuk - Dawn * 12/24 bit cpu *
www.jetnet.ab.ca/users/bfranchuk/index.html
Received on Wed Jun 12 2002 - 21:36:24 BST