I'll refer you to page 20, post #288. But this one should be of primary interest to you guys.
ion-sense-ignition.png
Note the stacking of the diodes. 5 diodes @1v voltage drop each = 5V signal. The very noisy power supply (timing light) I used at the time was an issue, but the primary and ion sense currents were accounted for in my oscilloscope waveform. To be honest, I didn't think it would work, but it did. The rectifier diodes were rated for 1kv or so. The voltage differential acted like 5 little batteries that "charged" with current demand. I'm sure I forgot the dynamics of the circuit (it was 15yrs ago), but it could hold some potential to be adapted. Looks like I need to get back on the ball with my ion sense ignition ideas before you guys pass me up.
You had me lost in the programming tech talk, but I hope to contribute more.
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