CDI systems info wanted

[Warwick Anderson]

Iv got a good modern CDI/MSD which Im building slowly, I mean to scan the
plans for any who wants em...
this unit can multi spark or be slightly changed to only spark twice per
firing.
In the plans it, it states it can handle 15,000 RPM for a V8.
now I just need to hunt down the cosworth DFV block...

for a basic CDI plan look at this link
http://ourworld.compuserve.com/homepages/Bill_Bowden/page2.htm
this one has one better thing than mine, it uses an off the shelf
transformer, where as mine you have to wind your own. something which im
still stuck on....

Hope this helps

Waz.
-Subject: Re: CDI systems info wanted


> Interesting project....
>
> CDI information is hard to find, and those that have it are usually not in
the
> spirit of sharing. (maybee they came across it the hard way too, and want
some
> $$$ for all thier efforts)
>
> With my limited electronic knowledge I attempted to peek inside one of
those
> mysterious black boxes.....Friggin thing is so complicated it probably
could
> control a lot more than just a couple of coils charging....
>
> What machine are you working on??? maybee your chip swap would work for my
> purposes?
>
> Arnaud Westenberg wrote:
>
> > Hi all,
> >
> > First I'd like to thank Rich M for suggesting the Motorola MGP20N40CL as
> > a replacement for my broken oem transistor in my motorcycle ignition.
> > It's running great again!
> >
> > I'm considering building a CDI ignition system for my bike and therefore
> > I'd like to ask a few questions. The system will be controlled by a
> > processor and have a coil per cylinder. Since I'm still in the EE
> > learning phase, I'm looking for information about how to build the high
> > voltage circuit used to charge the capacitor.
> >
> > Instead of charging a capacitor, I'm toying with the idea of having a
> > high voltage alternating current power supply. Obvious benefit would be
> > that spark duration could be as long as needed and could simply be
> > controlled by the processor. However I guess that components would be
> > quite large due to the power requirements. Are there any standard
> > components/circuitry to realize such a power supply from 12V?
> >
> > Thanks,
> >
> > Greetings Arnaud
>
> --------------------------------------------------------------------------
--
> > To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the
quotes)
> > in the body of a message (not the subject) to
majordomo at lists.diy-efi.org
>
> --------------------------------------------------------------------------
--
> To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the
quotes)
> in the body of a message (not the subject) to majordomo at lists.diy-efi.org
>

----------------------------------------------------------------------------
To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org