Evening Marshall,

If you ever put a CD ignition on an old car you would know that they use a circuit very much like the one for the pulser, a high voltage controlled by an scr.

   Before the CD units, an older, simpler desigm with the order of the day.

In the early 60's I was building solid state voltage regulators and ignition systems.

The coil for the ignition system I build then had a 400 to 1 turns ratio and a 20,000 to one resistance ratio. It would fire a 5/8 inch air gap in a test distributor turning 6000 rpm. I did calibrate two current outputs for this system, one during cranking and one for the run mode.

I wore out a jeep, an old Mercury, a 1957 chev and a ford van, all with this same ignition system.

The good part is that I still have it and the tube of heat sink compound I purchased to build that project. And it still works. At least it did when I removed it from the last vehicle it was installed in.

Seems it would be easy to make this output variable so one did not cry out so loud when he felt the voltage. The only problems I ever had with it was burning up plugs and distributor caps.

In 100 % humidity, the spark plug wires were not good enough.

So, all we need is a variable output ignition system.

Wayne


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