Dwell and HEI's

[Sandy]

One big thought, and this is something that may be of concern, what
protection does the module affect to the driving digital source, ie, if
something get fried inside the module will the EMF of the coil get back
into the ECU. This may not be a problem as they were designed (the 4
terminal) for a reluctor input only, but for driving it with something
digital it may be a concern. I would expect also the change in timing to
not show with a single input voltage. Will have to wait till' someone send
me the pins...

Sandy


At 12:12 AM 2/22/98 -0500, you wrote:
>Sandy wrote:
>> 
>> The funny thing now that I think of the HEI module idea, it came up before
>> and anyone hardly had a thing to say, boy, now it a has started quite an
>> interesting thread...
>> 
>> Off to the garage!
>> 
>> Sandy
> Just one note - digitally driving the HEI module will cause it to
>behave differently than driving it with a pickup - due to different
>input wave pattern rise times. You will NOT likely see the advance
>phenomenon. Apparently they are level triggered, not edge triggered.
>Digital trigger will make it behave as edge triggered.
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