Even with the capacitor you still get a 200v or so 'spike' (in truth a 15kHz
oscillation for about 5ms, have a look at the web site below - select
'Spanners' and 'Ignition' then click on the graph icon) on the live side of
the points as they open. *That's* back emf.
PaulH
http://www.mgb-stuff.org.uk
----- Original Message -----
From: Bullwinkle <yd3@nvc.net>
To: Charley & Peggy Robinson <ccrobins@ktc.com>; mgs <mgs@autox.team.net>
Sent: Tuesday, October 31, 2000 8:15 AM
Subject: Re: ignition problem
> Hay Charley Tuna:
>
> Did you actually try it be expounding?
>
> 1) Just went out and again checked it with my TD which is in the garage
attached
> to the house. Absolutely nothing, not even a tickle even with my arm
touching
> the generator and radiator brace.
>
> 2) There is absolutely no such thing as a back EMF. Go read my posts in
the
> archives or at http://www.mgcars.org earlier this year.
>
> 3) What's the condensor/capacitor wired parallel to the points for?
>
> I think you just got hooked on artifical bait!
>
> Blake
>
> > If the back EMF off the coil gets ya, ya'll kknow it!
> >
> > Shockingly yers,
> >
> > CR
>
|