Ion Gap Sense Questions

[robert dingli]

Rod writes,
> 
> The reason I'm interested in high tension measurement is that it
> would make putting the system on an engine with a distributor-based 
> ignition system possible.
> 

Before I arrived, other researchers in our thermo labs had experimented
with various methods of measuring ion-gap voltage by measuring the secondary
voltage directly.  They got no-where.  The spike was enough to zap any
protection devices that they had available at the time.  I'm not going to
bother trying - instead I plan to use one dual fire coil per cylinder
with my detection circuit on the unused secondary output.

> 
> >Robert 'it looks like it's time to convert to multiple coils' Dingli
> 
> Any suggestions on what's a suitable available coil for this?
> 

I've got some Delco and Ford (??) dual coils handy.

Robert
-- 
----------------------------------------------------------------------
             Robert Dingli           r.dingli at ee.mu.oz.au

Power and Control Systems                 Thermodynamics Research Lab
Electrical Engineering                    Mechanical Engineering
   (+613) 344 7966                           (+613) 344 6728
  University of Melbourne, Parkville, 3052, Victoria, AUSTRALIA
----------------------------------------------------------------------