I am closing in on the final design.
I am taking it slow as it is like a first
flight. If if blows up a lot of work and parts
are lost.

The perf board is necessary as some parts are too
big to fit the proto boards.

I tried to use this combined opto isolator and
FET gate driver and it was an unmitigated disaster.
Costs a lot of money and drew .2 amps out of the
5 volt power supply. Almost as bad as my new
Windows cell phone. Fairchild is a good company
but this part is junk. I went back to a separate opto iso
and to the old stand by 50 cent CD4050. I used 3 out of
the six buffers wired in parallel. I noticed the famous
Silicon Chip mag designer John Clarke in Aussi is doing the
same thing in his designs.

The DCP010512 5 volt to 12 volt 14 pin dip isolated switching
supply is working fine. I could not be happier with
that. It is expensive at around $10 each but well
worth it for high side FET gate drive.

I duplicated it for the lower FET drive as it is better
to reuse circuits that you know work well.

Here is the complete ignition.

Paul Lamar