ECU7

[Al Lipper]

Good question.  The two grounds will connect together, but would ideally run to
the battery seperately to minimize noise.  I'll pass this onto John, who's been
working on the circuit.  Thanks for your comments.

                        Al


At 10:04 PM 2/8/99 +0100, you wrote: 
>
> i work on a electronic distributorless ignition based on a 80592
> microcontroller and I watch 
> your new ECU7 schematic, where the logical GND is connected to the chassis
> GND???
>  
> The Ic 4049 is powered bu VCC- logical GND and his input (ignition pulse
> conditioning) is referenced to the chassis GND. Why??
>  
>   
>  
>             Sébastien (from france)