Schematic and technical info on MSD6A ignition

[Tom Cloud]

>
>Tom Cloud wrote:
>
>>I do have one question, though ... don't suppose you "reverse
>>engineered" the transformer on the board?  The turns, inductance
>>and maybe frequency response of the core material (I assume it's
>>ferrite) would be helpful.
>
>Sorry, I don't have any more info on the transformer, other than the 
>following.  The construction is the standard laminated iron type, I think 
>they are referred to as "E core" type (the laminates are shaped like the 
>letter E).  Very similar in appearance to typical low voltage transformers. 
> The core is definitely not ferrite.  Take a look at the jpeg files, the 
>transformer is the largest component on the board.

I note from your post that the rep rate for the sparks
is 1 kHZ ??   the iron core xfmr is chosen for maybe
 - cheaper
 - allows longer pulse width

Tom Cloud <cloud at peaches.ph.utexas.edu>