[Diy_efi] Ignition Hardware Driver Stage

[rr]

I should not have said TTL, 0 to 5 volts is correct. The
modules amplify the pickup coil signal and send it to the ECM 
as a reference pulse.

The ECM drives the EST line to start dwell (active EST) then
fire the coil (inactive EST). The bypass allows the module to
fire the coil independent of the EST line (for setting the 
timing).

As far as I know the module will fire the coil with out the
use of the pickup coil. That is a separate circuit.

BobR.


maier_markus at t-online.de wrote:
> 
> Ok, sorry, after having a detailed look on the website, I got your
> point.
> 
> Does that mean, these modules can be controlled from the processor pin
> directly? All of the are stating, that they have magnetic or hall pick
> up sensors. I'm looking for the output stage, that comes directly after
> the uC processor pin. I toggle the pin and the ignition coil should get
> loaded. If I turn the pin of, that coil should fire.
> 
> So this means: is it ok to drive the module directly with a TTL level
> signal (0..5Volts)? Or will the processor brake? Or will the module not
> work correctly?
> 
> Thanks
> Markus
> 
> rr schrieb:
> >
> > Just noticed you are in Germany. OK, I do not have part
> > numbers. What you are looking for is the module from a
> > distributor GM car w/EFI. There are a lot of them. The
> > 1986
> > through 1992 Camaro and Firebirds have them. If that
> > helps
> > for a model.
> >
> > If you get to a junkyard look for an ignition
> > distributor
> > from one of these cars. The module is inside.
> >
> > There are wiring pinouts on the incoming site (don't
> > know
> > the file name).
> >
> > At this link go to the ignition modues, DELCO, DM1980.
> >
> > http://www.transpo.de/Catalog/Browse.htm
> >
> > That is what you are looking for. (or the DM1978,
> > DM1948)
> >
> > BobR.

_______________________________________________
Diy_efi mailing list
Diy_efi at diy-efi.org
http://www.diy-efi.org/mailman/listinfo/diy_efi